... STEEL:Astm a 53/106/ API 5LA/B,ST37,ST35.8 Technique:Hot Rolled or Cold ... Rolled Size:1/2"-24" API 5L GR.B pipeMaterial:1. CARBON STEEL: Astm a 53/106/ ... API 5LA/B,ST37,ST35.82. Standard: Seamless – ASTM A106, ... , 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 ...