... heat exchanger 2material:0Cr18Ni9,1Cr19Ni10,00Cr19Ni10,0Cr18NI14Mo3 etc. carbon steel tube 1. Reference standard : ASTM, JIS, EN,API2. material : 1Cr18Ni12Mo2Ti,A268,A376 ... composition C≤ 0.12Mn≤2.00P≤0.03S≤0.03Si≤1.00Cr11.00-14.00Ni≤16.00-19.0Mo0.80-2 ... Pipes Co., Ltd.E-mail: guohuiyan1990@msn,cn Picture example: 1.workshop:2.production process3.package4.stock carbon steel ...