... Standard GB/T8162 , GB/T8163 ,ASTM A53 ,ASTM A106 ,DIN1629 , API 5L Steel Grade GB/T8162 , GB/T8163:10#, 20#, 35#, 45 ... ,80AY/T5037-20015.8m,6m,5m to 12m random Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), ... thickness:2.11mm -59.94mm Length:5-12m,customized Standards:API 5L,API5CT,ASTM A106,ANSI,ISO9001,DIN,EN,JIS. 1. Specification ...