... ISO & KRMaterials: -,carbon steel pipe for liquid: ASTM A106/A53 GR.B, ST37, ST44. -,alloy pipe: P110, A335-P12, A335-P11 ... ,12Cr1MoV, 15CrMo, 37Mn5, 30CrMnSi, 27SiMn. -,for pipeline: API 5L GR.B, X42, X52, X60, X70. -,for construction: high thickness of ...