... Note:Carbon steel: 10#,20#,A3, 20G.16Mn,ASTM A234,ASTM A105and so on.Stainlesssteel:ASTMA403,1Cr18Ni9Ti,0Cr18Ni9,00Cr19Ni10,00Cr17Ni14Mo2,304,304L,316,316LAlloysteel:16MnR ... ,Cr5Mo,12Cr1SMoVK,10CrMo910,15CrMo,12Cr2Mo1,A335P22,St45.8,A reducer,stainless steel reducer,pipe fitting