Steel grades: Carbon steel :Gr.B,A53,A106,A105,A179,A192,A197,A234 WPB etc
Stainless steel :304,304l,312,316,316L,310S and more
Alloy steel:15Cr Mo,35CrMo~42CrMo and more.
Wall thickness pressure:Sch5S,Sch5,Sch10,Sch20,Sch30,Sch40,Sch60,Sch80,Sch120,Sch160,XXS.