化工企业常用物资标准清单,例阀门、管件、钢材、螺栓等 ...? 阀门 gb/t 12234-2007 石油、天然气工业用螺柱连接阀盖的钢制闸阀 gb/t 12235-2007 石油、石化及相关工业用钢制截止阀和升降式止回阀 gb/t 12228-2006 通用阀门 碳素钢锻件技术条件 gb/t 12229-2005 通用阀门 碳素钢铸件技术条件 gb/t 12236-2008 石油、化工及相关工业用的钢制旋启式止回阀 gb/t 22654-2008 蒸汽疏水阀 技术条件 jb/t 7746-2006 紧凑型钢制阀门 gb-t 12237-2007 石油、石化及相关工业用的钢制球阀 gb-t 12238-2008 法兰和对夹连接弹性密封蝶阀 gb-t 23300-2009 平板闸阀 api 598 valve inspection and testing api 599 metal plug valves—flanged,threaded, and welding ends api 600 steel gate valves-flanged and butt-welding ends, bolted bonnets api 602 gate, globe, and check valves for sizes dn 100 (nps 4) and smaller for the petroleum and natural gas industries api 607 fire test for quarter-turn valves and valves equipped with non-metallic seats api 608 metal ball valves—flanged, threaded and welding ends api 609 butterfly valves: double-flanged, lug-and wafer-type查看更多