... "-48" 4 Thickness: SCH10---160, STD, XS, XXS 1)Product: pipe reducer 2)Size: 1/2"-48" 3)Standard:ANSI B16 ... .9 DIN etc 4)Certification:ISO9001:2000 steel pipe reducer Productpipe REDUCER,reducer, concentric reducer, eccentric reducerStandardANSI B16.9 ... etc.MaterialASTM A234 WPB,Carbon steeland etc…Size1/2"-48"Wall ThicknessSCH20,STD,SCH40,SCH80,SCH160,XXSSurface treatmentblack rust-proof oil ...