Welding-Neck FlangeStandard:GB ,JB ,ISO ,DIN ,JIS ,ANSI ,BSSize:1/2¡å~48¡å£¨DN15mm~1600mm£©Pressure:150Lb~800Lb£¨PN1.0~6.4MPa£©Material:Stainless Steel , Alloy SteelMaterial:Stainless Steel , Alloy Steel