... " butt-welding : 26"----72" )Thickness: sch 5s-----160Standard: GB, ANIS, JIS, BS, DIN,Material: carbon steel , stainless steel, alloy steelPacking: wooden ... :16MnR,Cr5Mo,12Cr1SMoVK,10CrMo910,15CrMo,12Cr2Mo1,A335P22,St45.8,A10bB elbow,alloy steel elbow,90 degree ...