ERW Pipe A53 Gr.B 1>Standard: ASTM A53,API5L,API5 CT 2>Grade: ASTM A53 Gr. B,API 5L,X60 3>OD: 6mm - 610mm 4>WT ... ERW Pipe A53 Gr.B1> Standard: ASTM A106, ASTM A53, ASTM A179, ASTM A192,DIN1626, API5L, API5 CT2> Grade: ASTM A53 Gr B, API 5L ... GR.B, X46, X56, X60, X65, X70 3> Outer Diameter ...