... Thread Standard: ANSI, JIS, DIN, EN, ISO, GB, SH AND HG Material: Carbon, Stainless, Alloy Certificate: API, ISO9001: 2000, Production Capacity: 6000 ... Cold drawn steel tubes/ pipes, API SPEC 5L pipes, MATERIAL :ST 37, ASTM A106 Gr B; A53, A210; API 5L X42, X46, X52, X56, X60 ... LTDBusiness styleManufacturer Product Seamless Steel PipeStandardASTM,DIN,GB,JIS,API 5L,API5 CTMaterial20#,10#,45#,A53-A,A53-B, ...