... Standard GB/T8162 , GB/T8163 ,ASTM A53 ,ASTM A106 ,DIN1629 , API 5L Steel Grade GB/T8162 , GB/T8163:10#, 20#, 35#, 45 ... 162 St 37.0, St 44.0, St 52.0 API 5L A B X42,X46, X52, X60, X65, X70, X80 ... to 24"SCH20,30,40,60,STD XS,80ASTM A106/API 5L GR.B5.8m,6m,ASTM A53Gr.B5m to 12m randomPipe ... thickness:2.11mm -59.94mm Length:5-12m,customized Standards:API 5L,API5CT,ASTM A106,ANSI,ISO9001,DIN,EN,JIS. 1. ...