... 1). OD:2''-12'',WT:SCH20-SCH160 2). Material:ASTM A106/A53/API 5L Gr.B,ST52/37/44 SIZE ... and SCH10-SCH160StandardAPI 5L, API 5CT, DIN1629/2448, DIN17175, ASTM A53, ASTM A106B, ASTM A179, ASTM A210, ASTMA335, ASTMA519 and so on.Superficial TreatmentBlack paintingTechniqueCold ... pipe, oil pipe FLAGSHIP PRODUCT: 1. Materials and Standards: ASTM A106 Gr.B DIN 1629/2448 ST 52-III Size ...