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怎样从钛管的焊道颜色判断焊接质量? 钛材的焊接质量,即焊道附近是什么颜色的呢 , , - 查看更多 3个回答 . 2人已关注
中国建筑标准设计研究院“钢梯”图集? 中国建筑标准设计研究院“钢梯”图集查看更多 5个回答 . 4人已关注
说说炼油生产中的拔出率考核弊端? 我们 单位考核班组按照拔出率计算。我 来 说说这其中的 弊端。 对一定的原料和 操作条件来讲,拔出率是 一定的。如果 非要提高拔出率的话,只能是使操作走向不 稳定。各个班组尽量多抽出侧线油品,这样 容易造成干板操作。我们的 操作是在临界干板的 状态下生产,我 计算过,临界干板的拔出率是高。但是操作也相当不 稳定,一旦温度或者物料条件发生变化,平衡极易破坏。 我认为,操作 稳定是 最为关键的。为了全班组的利益一味追求拔出率,也是不 可取的。应该根据 油品的变化,实时的 调节生产条件和 指标。比如昨天 我们改炼其他罐原油。其成分比原来的重5个百分点,这样渣油成分多,量大。换热后的 初馏塔温度 升高,初馏成分改变,以至影响到了常压这边的侧线出率。操作条件没有 变化,原料组成变化了,影响到了生产,这也提醒我们,改变原料的 时候应该先分析好组成,根据组成 重新界定一下操作 条件。查看更多 7个回答 . 4人已关注
谁有欧洲工业气体协会和美国压缩协会标准? CGA G4.1 G4.4 G4.7 G4.8 G4.9 P8 P8.3 P8.4 P8.5 P8.6 P19 P25 P31 P35 P37 P40 P59 S1.3 EIGA 33/06 12/02 148/08 144/08 145/08 147/08 75/07 146/08 65/06 127/04 63/05 94/03 24/08 151/08查看更多 4个回答 . 2人已关注
21世纪建筑给水管节能环保型薄壁不锈钢管材及管件? < class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">21</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">世纪建筑给水管节能环保型 薄壁不锈钢管 材及管件</SPAN></P> < class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文来自</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">: </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">环境技术网</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT><A href="http://www.cnjlc.com/"><FONT face="Times New Roman" color=#0000ff>www.cnjlc.com</FONT></A><FONT face="Times New Roman">)</FONT></SPAN></P> < class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">详细出处参考:</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">http://www.cnjlc.com/h2o/1/200707081828.html</FONT></SPAN></P> < class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com ffice ffice" /><o:p><FONT face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P> < class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><o:p><FONT face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">摘要:综述薄壁不锈钢管材及管件在国内外发展和应用概况、管材的各种连接方式和独特的性能,从而得出它是给水系统中综合性能最好的管种之一的结论。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">关键词:薄壁不锈钢管</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">标准规范</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">连接方式</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">特型管材</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">0 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引言</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">建筑业是国民经济支柱产业之一,应用新型建筑给水管材又是当今建筑领域的热点问题之一。借鉴国外成熟的应用经验,研制开发综合性能优越的管材和管件,对提高我国现代建筑的档次、改善供水水质、保障人民身体健康和节约水资源具有重要的意义。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">薄壁不锈钢管材和管件</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">简称不锈管</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,经久耐用,外表精美,属节能环保产品,已被国内外工程界所公认。不锈管有压缩式管件等多种成熟的连接方式,安装简便,安全可靠,在减少壁厚降低成本方面,更具有开发和推广应用的意义。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国外不锈管应用已趋普及[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相应的标准</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国外应用薄壁的不锈管起始于上世纪</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">60</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年代,目前,发达国家在建筑给水、水处理系统的应用日趋普遍。英国、德国、美国和日本都有不锈钢管的标准,也有</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ISO</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DINEN</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的标准。美国根据净水法制定的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">AN-SI/NSF61<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com ffice:smarttags" /><st1:chmetcnv w:st="on" UnitName="a" SourceValue="1997" HasSpace="False" Negative="True" NumberType="1" TCSC="0">-1997a</st1:chmetcnv></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国家标准</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">/</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国家卫生基金国际标准,明确规定用于处理饮用水的金属材料仅不不锈钢和球墨铸铁。其它如加拿大卫生部、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">RvA(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">荷兰鉴定委员会</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和世界卫生组织也确认了这一标准,现饮用水系统的管道和系统部件也以上述标准作为健康保证的基础,通过符合该标准要求的第一批材料有不锈钢</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">AISI304</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">304L</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">316</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</SPAN><st1:chmetcnv w:st="on" UnitName="l" SourceValue="316" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US><FONT face="Times New Roman">316L</FONT></SPAN></st1:chmetcnv><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.2 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">日本应用情况</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">日本早在上世纪</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">70</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年代初,由于管网中饮用水水质的不断恶化,开始在楼宇内安装使用了不锈钢管道,随后推广到埋地供水管道。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1980</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年后的二十年间,东京地区历年更新给水管,目前已有</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">80%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上住户将原进水管</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">住户与主管道之间的连接管</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">换成了不锈钢管,从而使管网漏损率下降了</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">7.7%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,节约了水资源。另外在水处理厂、水管桥和桥梁的添架管方面都应用也十分广泛。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.3 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">欧美各国应用情况</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">欧美各国已广泛应用不锈钢管,美国底特律某体育场内给水系统,甚至包括各售货点的直饮水管路,全部采用了</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">304</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈钢管。瑞典</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">KarlsKoga</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">市,经过十多年试验,埋地给水主管道正被</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">316</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈钢管所替代。现不锈钢管已成为美国新建的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1600</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">多座城市废水处理厂</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(WWTP)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的标准用材。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国内不锈管发展概况</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">问题的提出</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在建筑给水管系中,由于镀钢管已经结束了百年辉煌的历史,以铝塑管为代表的复合管和</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PE</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PP-R</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等塑料管发展迅猛,但各种管材“还不同程度地存在着一些不足,远不能完全适应供水管系的需要和国家对饮用水有关水品质的要求”[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]。因此,有关专家预言:建筑给水管材最终将恢复到金属管的时代。根据国外的应用经验,在金属管中认定薄壁不锈钢为综合性能最好的管材之一。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.2 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发展应用概况</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">薄壁不锈管,国内于上世纪九十年代末才闻出,是当今管材领域中崭露头角的新生族,已大量应用于建筑给水和直饮水的管路。建设部非常重视这一新型管材,《薄壁不锈钢水管》的行业标准已于去年出台,管道工程技术规程正在拟定;以建筑冷</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">热</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">水用的不锈钢管管道安装国家建筑标准设计图集,建设部也于去年发文,正由同济大学负责主编。目前,浙江、广东、江苏、四川等地都有了专业厂家生产薄壁不锈管,产品已趋成熟期,因而,推广应用的时机也已成熟。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.3 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈管连接方式</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>2.3.1</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">常见的管件类型有压缩式、压紧式、推进式、焊接式及焊接与传统连接相结合的派出系列的连接方式,其原理、适用范围等详见表</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>2.3.2</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">凡连接方式采用密封圈或密封垫的,其材质大多选择硅橡胶、 丁腈橡胶 和三元乙丙橡胶等,且应符合对热水输送管橡胶密封圈材料的国家标准。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.4 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国内市场看好</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>2.4.1</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">建筑给水管道需求大</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">根据《建筑事业“九五”计划和</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2010</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年远景目标纲要》测算,</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2001-2010</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年间,每年管材需求量为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">50-60</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">万</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">km</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,其中住宅建筑室内冷热水管需求量为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">40</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">万</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">km</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]。随着不锈钢管等新型给水管的开发,对提高城市现代建筑的档次,意义重大。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>2.4.2</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管道直饮水发展迅速</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">随着国民经济的发展,管道直饮水在国内深圳、上海等城市发展迅速,经济发达的中等城市也积极规划直赶而上。在直饮水管道中,不锈管系无疑是首屈一指的。因为开始富裕的中国人民,“健康第一”是人们共同关注的话题,目前国内上档次的宾馆,都已配置或正在配置管道直饮水。深圳等城市的主要活动中心有免费饮水系统,“街头渴了不要紧,只需弯腰就能饮”的公益项目也已在宁波等城市实施,这些管路都采用不锈钢管作为健康的保证。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>2.4.3</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国产替代进口前途广</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">深圳市自来水集团公司曾在梅林一村</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">25</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">栋高层住宅和滨海社区</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">10</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">栋住宅楼的管道直饮水项目中,使用了日本的卡压式薄壁不锈钢管材及管件,该公司现又在深圳万科集团金色家园二期</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">栋</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">36</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">层、彩田新村</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">14</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">栋</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">26-28</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">层公寓的管道直饮水项目中,安装了国产的压缩式薄壁不锈钢管材及管件,开创了以国产替代进口的先例。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈管的性能与特点</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">力学性能,见表</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.3 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">耐蚀性能</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.3.1</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈钢在饮用水中具有非常好的耐蚀性,原因在于①其表面有一层致密的铬氧化保护薄膜,且一旦划纹时,在有空气存在的情况下能立即形成新的氧化保护膜;②能承受</SPAN><FONT face="Times New Roman"><st1:chmetcnv w:st="on" UnitName="m" SourceValue="30" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>30m</SPAN></st1:chmetcnv><SPAN lang=EN-US>/s</SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的高流速的冲击,因此能抵御流经管口、弯管、阀门和泵后涡流造成的腐蚀;③在设计采用不锈钢时,不必考虑腐蚀余量。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.3.2</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管道漏损的原因,其最大的“杀手”就是</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">C1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。而</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">304</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈钢能耐</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">200ppm</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">氯化物、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">316</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈钢能抵御</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1000ppm</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">氯化物的天然水,这对大型的建筑尤为重要。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.3.3</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">从电势序列看,不锈钢比碳钢和铸铁更不易起化学作用,在实际应用中,可与铜基合金接头</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">或铜制热水泵</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">组装,实用性强,效果好。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.4 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">节能性</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.4.1</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管壁为镀锌管</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1/3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,重量轻能降低运输和安装成本,</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DN25</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">及以上管材都属高径壁比范畴;</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.4.2</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">内壁光洁、摩阻小,在同一工况下,比其它金属管流量大;</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.4.3</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">导热系数小,保温性能好。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.5 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">环保性</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.5.1</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">无毒、无积垢,能杜绝管路的二次污染;</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.5.2</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">耐各种酸碱盐溶液,耐高速水流冲击;</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.5.3</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">与其它管材相比,浸析到水中的重金属</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(Ni</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Cr</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Mo)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">量最少,浸析到纯净水中的金属</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(Na</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Fe</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Ca)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">量最少;</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.5.4</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">产品能</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">100%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">回收,符合国家产业政策。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.6 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">创新性</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.6.1</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管件应用冷挤压成型工艺,能有效地克服传统浇铸成型的易使管件产生气泡、缩松和应力集中等缺陷;</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face="Times New Roman"><st1:chsdate w:st="on" Year="1899" Month="12" Day="30" IsLunarDate="False" IsROCDate="False"><SPAN lang=EN-US>3.6.2</SPAN></st1:chsdate><SPAN lang=EN-US> </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">各种管件的连接方式,管壁薄,节材;多数还可拆卸,维修便捷。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.7 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">经济性</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">详见以下</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">经济分析。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">经济性分析</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4.1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使用寿命长[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈管是使用寿命最长的管种之一,能永保管道洁净的水质。意大利米兰</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Canegrate</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">水处理厂,对其采用碳钢和不锈钢的寿命成本逐项剖析,由</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><o:p><FONT face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">此得出结论:在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">30</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年寿命周期中,其维修和更新费用是企业成本的主要因素:采用不锈钢比采用碳钢更加经济的转换点是使用到</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">10</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4.2 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控制漏损率[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">由</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1.2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,日本出于饮用水的二次污染而应用了不锈钢管,却从实践中得出了不锈管能有效控制城市管网漏损率的结论。如日本东京管网应用不锈钢管比率从</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1983</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">11%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">提高到</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2000</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">80%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上,城市管网漏损率却从</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">14.7%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">降至</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">7%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,使自来水产业的效益大为提高,同时节约了水资源,见表</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><o:p><FONT face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4.3 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">实例比较</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">宁波市一户一表管道工程,以</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">6</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">层多层住宅为例,每单元</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">12</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">户,需</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DN50</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管材</SPAN><st1:chmetcnv w:st="on" UnitName="m" SourceValue="22" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US><FONT face="Times New Roman">22m</FONT></SPAN></st1:chmetcnv><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DN20</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管材</SPAN><st1:chmetcnv w:st="on" UnitName="m" SourceValue="44" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US><FONT face="Times New Roman">44m</FONT></SPAN></st1:chmetcnv><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,弯头</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">49</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">只,异径直角四通</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">5</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">只,其它三通、活接头、转换接头等</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">54</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">只。选用各种管材造价对见表</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">5</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4.4 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈管价格尚有下浮的空间,一是取决于生产工艺成熟度的提高和生产规模的扩大;二是以国产料替代进口料;三是由于进口料关税下调已定局,见表</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">6</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">结语</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5.1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">综合所述,薄壁不锈管材和管件,发达国家出于人体健康第一和寿命周期成本的初衷,应用已趋普及。在国内,市场前景看好,推广应用的时机也已成熟。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5.2 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈管按照不同管径的范围,有各种管件和连接方式相匹配。不锈管力学物理性能、耐腐蚀性能好,具有节能性、环保性、创新性和经济性,是</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">21</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">世纪应用于给水系统综合性能最好的、新型、节能和环保型的管种之一。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5.3 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">建议生产厂家应继续不断开发适销对路的多种类型的管件和连接方式,以适应国内外市场的需求。产品应用范畴也应从目前的建筑给水、直供水管道扩大至暖气、燃气管网及食品、医药、化工和电子等行业。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5.4 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">建议国家有关部门应继续关注这一新型管材的发展,旨在适应提升产品档次、满足人民群众提高生活质量的需要,且能替代进口管材和出口创汇,具有明显的社会效益和经济效益。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><o:p>&nbsp;</o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><o:p>&nbsp;</o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><A href="http://www1.shejis.com/uploadfile/shui/uploadfile/200808/20080813084417916.jpg" target=_blank><SPAN style="TEXT-DECORATION: none; text-underline: none"><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 450pt; HEIGHT: 387pt" alt="" o:button="t" type="#_x0000_t75"><v:imagedata o:href="http://www1.shejis.com/uploadfile/shui/uploadfile/200808/20080813084417916.jpg" src="file:///C:\DOCUME~1\hp\LOCALS~1\Temp\msohtml1\01\clip_image001.jpg"></v:imagedata></v:shape></SPAN></A></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><o:p></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><o:p>&nbsp;</o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><o:p>&nbsp;</o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><o:p>&nbsp;</o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><o:p><FONT face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">参考文献:</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">NiDI</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">资料</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不锈钢在水工业中的应用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">二</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]关于推广应用“高径壁比高精度不锈钢中、高压供水管及配套管件与专用技术”的通知</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国科市字[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2001</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">71</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">号</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]建筑给排水管材的回顾和展望</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">黄汝宏</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在中国建筑金属结构协会给水排水设备分会管道委员会成立大会上讲话</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> 2001.9</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">[</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">]我国不锈钢及其原材料进口关税减让情况</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">《不锈》</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2002</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">期</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> P37</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作者:丁再励</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地址:北京车公庄大街</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">19</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">号</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(100044) </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">单位:中国建筑标准设计研究院</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电话:</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">010-68393573</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作者:黄汝宏</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地址:北京太平路</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">22</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">号</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(100036) </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">单位:总后建筑设计研究院</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电话:</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">010-66934849 68473529</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作者:缪德伟</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地址:宁波市育才路</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">288</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">号怡景阁</SPAN><FONT face="Times New Roman"><st1:chmetcnv w:st="on" UnitName="a" SourceValue="3" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>3A</SPAN></st1:chmetcnv><SPAN lang=EN-US>2(315016) </SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">单位:宁波市华涛 不锈钢管材 有限公司</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电话:</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">0574-87212899</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">E-mile:sales@huataopipe.com</FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文来自</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">: </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">环境技术网</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(www.cnjlc.com) </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">详细出处参考:</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">http://www.cnjlc.com/h2o/1/200707081828.html</FONT></SPAN></P>查看更多 0个回答 . 2人已关注
项目过程中,工艺人员要注意哪些事情? 作为工艺技术人员,当一套新装置正处于施工建设过程中,工艺人员主要从事哪些方面的工作?在配管阶段,主要干什么?在设备到现场后,主要干什么?配管完成后,管线打压要注意什么?哪些管线是水压试验,哪些管线是气压试验?压力试验的压力值和设计值,操作值有什么区别和联系?试压过程要注意什么?一般厂家的IA管线的试压有什么特殊要求?管线打压和管线冲洗是不是可以连在一起做? 压力容器 到现场后有的可能生锈,或者有缺陷,处理后,或者就算设备良好,是不是还要做压力试验?做容器的压力试验和管线的压力试验有什么区别和联系。后续的管线吹扫。气密等又怎么做?.................... 感觉需要问的东西太多,自己知道得太少,有没有关于这方面的书籍可以参考,更期待高人指点!非常感谢!查看更多 3个回答 . 3人已关注
机械密封好还是弹性密封好? 大家好。对于大型原油储罐,密封形式采用 机械密封 好还是弹性密封好?请大家各抒己见。查看更多 1个回答 . 3人已关注
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减渣馏程低如何解决? 我们减压塔减渣初馏点才350左右 怎么也抽不上去是怎么回事 谁能给讲一下原因 查看更多 8个回答 . 2人已关注
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甲醇尾气生产合成氨的消耗核算? 大家来讨论下,将 甲醇 合成的驰放气进过氢回收后生产的尾气用来生产 液氨 ,如何计算该尾气的价值,其与甲醇如何分摊之前工艺消耗?查看更多 0个回答 . 1人已关注
谁用过齿轮泵打液氨 请教下? 或许打 液氨 有更合适的泵,这里仅讨论 齿轮泵 ,谁用齿轮泵打过液氨查看更多 3个回答 . 4人已关注
MTO工艺开车及生产问题讨论? MTO技术在全国尤其是内蒙是遍地开花,开车和运行中会遇到什么问题呢?希望大家一起探讨研究,并解决问题,共同为煤化工的发展做出努力。希望此贴一直更新下去!谢谢各位大家 查看更多 5个回答 . 4人已关注
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简介
职业:阜阳欣奕华材料科技有限公司 - 水性漆工程师
学校:渭南师范学院 - 化学化工系
地区:浙江省
个人简介:忠诚可以简练地定义为对不可能的情况的一种不合逻辑的信仰。查看更多
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