Stainless Steel Weld Neck Flange 1/2"-48" Stainless Steel, Carbon Steel Description: Stainless Steel Weld Neck FlangeSize: 1/2" to 48"Standard: ANSI B16.5Working Pressure: Class150, Class300, Class600, Class900, Class1500Material: SS304, SS316, SS304L, SS316L, A105, etc Stainless Steel Weld Neck Flange, ANSI B16.5, Class150