... 1for chemical and heat exchanger 2material:0Cr18Ni9,1Cr19Ni10,00Cr19Ni10,0Cr18NI14 tensile strength seamless carbon steel pipe1. Reference standard : ASTM, JIS, EN,API2 ... ,cn Picture example: 1.workshop:2.production process3.package4.stock tensile strength seamless carbon steel pipe