... GB/T8162 , GB/T8163 ,ASTM A53 ,ASTM A106 ,DIN1629 , API 5L Steel Grade GB/T8162 , GB/T8163:10#, 20#, 35#, 45 ... 24"SCH20,30,40,60,STD XS,80ASTM A106/API 5L GR.B5.8m,6m,ASTM A53Gr.B5m to 12m ... Rst34-2, Rst37-2, RSt44-2, St52 Size: OD 16mm - OD 426mm OCTG PIPE, OIL PIPELINE: Material:J55,K55, ... thickness:2.11mm -59.94mm Length:5-12m,customized Standards:API 5L,API5CT,ASTM A106,ANSI,ISO9001,DIN,EN,JIS. 1. ...