... 25.4mm 3.Length: 6 – 22 m 4.Steel Grade: Q235A, Q235B, Q345API 5L: GR A, GR B, X42,X46, ... X60,X65,X70, X80ASTM A252 GR 1, GR 2, GR 3ASTM A53: GR A, GR B, GR C, GR DBS 4360: Grade 43, ... Grade 50EN: S275, S275JR, S355JRH, S355J2H 5.Standard: API 5L, API 5CT, ASTM A252, ASTM ... steel pipes can be supplied according to GB, ASTM, API, DIN, JIS standards, the factory is ...