ASTM A53, ERW steel pipes, Grade B, SCH40.OD219.1mm
STD, SCH 40, SCH 60, SCH 80, SCH 120, SCH 160 etc: Wall Thickness Tolerance: acc. to ASTM A53, +/- 12.5%t: Pipe Standard: ASTM A53 B, API 5L B, CSA Z245, A106 B: A53B Sch 40 Pipe Grade: Grade B, Gr.B, GRB, G.B other steel grade required: A53B Pipe Test: Hydro test, UT test, Flatten test, Impact test etc: Hydro test pressure: As per ASTM A53 …