韩国语学习（通俗易懂），没有笨学生，只有懒学生。？ 春天 了, 桃花都开了[/td] 봄이 되어 복숭아꽃이 만발했다 我试试：bao mi die e bao song a gao qi man bar he da查看更多
高压加氢管道？ i think your plant is near dhds. your service looks like hydrogen rich hydrocarbon or hydrogen service and rating about 1422 psi. i suggest use 1500 rj flange connection and general material uses killed carbon steel. in this case temperature limit is to 370 ℃and pressure limit is per asme/ansi b16.5. corrosion allowance shall be 3.2 ㎜ and the pipe specification is as follows: 2" & smaller seamless a106gr.b, sch xxs 3" to 8" seamless a106 gr.b, sch 160 10" to 16" seamless a106 gr.b, sch 80 18" to 24" welded a672-c60 class-22 sch 80 notes : 1. the full length of each weld shall be radiographically examined in accordance with and meet the requirements of the asme boiler and pressure vessel code section viii paragraph uw-51. 2.stress relief heat treatment is required after fabrication.查看更多
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