... Weld & Thread Standard ANSI, JIS, DIN, EN, ISO, GB, SH AND HG Material Carbon, Stainless, Alloy Certificate API, ISO9001: 2000, CCS ... pipes, MATERIAL Carbon Steel Tubes/Pipes ST 37, ASTM A106 Gr B; A53, A210; API 5L X42, X46, X52, X56, X60, X65 ...