... GB/T8162 , GB/T8163 ,ASTM A53 ,ASTM A106 ,DIN1629 , API 5L Steel Grade GB/T8162 , GB/T8163:10#, 20#, 35#, 45 ... 44.0, St 52.0 API 5L A B X42,X46, X52, X60, X65, X70, X80 ASTM A106 GrB seamless steel pipe ... St52 Size: OD 16mm - OD 426mm OCTG PIPE, OIL PIPELINE: Material:J55,K55,N80,P110,L80/Gr.B X42,X46 ... :2.11mm -59.94mm Length:5-12m,customized Standards:API 5L,API5CT,ASTM A106,ANSI,ISO9001,DIN,EN,JIS. 1. ...