8 rows · Slip-on flanges, Blind flanges, Lap joint flanges, Welding neck flanges, Plate flange,
Raised Face Weld Neck Flange:FOB Price:US $0.1-1 / Piece( FOB Price) High Quality Welding Neck Flange :FOB Price:US $800.0 / Ton:Different Sizes of Weld Neck Flanges :FOB Price:US $0.12-1000 / Piece:ANSI B16.47 WNRTJ Flange:FOB Price:US $0.5-1000 / Piece Weld Neck Flanges, WNRF Flanges,WN flange,ANSI B16.5 flange raised face flange Weld Neck Flange US $10 / Piece; Forged Stainless Steel Sus304 Welding Neck Flange Wn Flange US $1000-3000 / Piece; ANSI Standard Steel Flange Long Weld Neck Flange US $0.1-20 / Piece; Customized metal weld neck flange US $1-100 / Piece; Blind ASTM a105n Stainless Steel Pipe Weld Neck Flange US $0.1-10 / Piece
Flange face finish. The ASME B16.5 code requires that the flange face (raised face and flat face) has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality seal. A serrated finish, either concentric or spiral, is required with 30 to 55 grooves per inch and a resultant roughness between 125 and 500 micro inches.
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