BUTT WELD FITTINGS SIZE: 1/2" -48" SMLS/ERWMaterial:A234 WPB.WPL6.WPHYSCH:SCH20.40.XS.80.160 .XXS FORGED FITTINGS SIZE: 1/4" -الی "4 S.W & NPTMaterial :A105N.LF2.304L.316L.321 Pressure: 2000.3000.6000.9000