... Rolled or Cold Rolled Size:1/2"-24" API 5L GR.B pipeMaterial:1. CARBON STEEL: Astm a 53/106/ API 5LA ... Welded – API 5L, ASTM A53,ASTM A671/ A672. High yield Grade: X42, X46, X52, X56, X60, X65, X70, X80, PSL ... 1,2.High temp grade: A, B, C. Low temp grade: 1, 3, 4, 6, 7, 8, 9, 10 ... , 11 And some other international standard and grade.3. ...