Weld Neck Flange

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A weld neck flange is a type of industrial flange designed to transfer stresses to the pipe to reduce high stress concentrations at the base of the flange. Compared with other types, weld neck flanges are known for their tapered hub and gentle transition from flange thickness to pipe wall thickness. They are deformation-resistant, and are normally used for high pressure, high or low temperature conditions. Size Weld neck flange: 3/8"～160" DN10～DN4000 Pressure American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500 European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400 Flange Facing Types American Series: Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M), Ring Joints Face(RJ) European Series: Type A(Flat Face), Type B(Raised Face), Type C(Tongue), Type D(Groove), Type E(Spigot), Type F(Recess), Type G(O-Ring Spigot), Type H (O-Ring Groove) Materials Carbon steel: A105 Alloy steel: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22 Stainless steel: A182 304-304H-304L-304N-304LN 316-316H-316L-316N-316LN 321-321H 347-347H Low temperature steel: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8 High performance steel: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70 Standards GB/T9112-2000 GB/T9115.1-2000 GB/T9115.2-2000 GB/T9115.3-2000 GB/T9115.4-2000 GB/T9124-2000 GB/T13402-1992 SH/T3406-1996 GD2000 GD87-1101 JB/T74-1994 JB/T75-1994 JB/T82.1-1994 JB/T82.2-1994 JB/T82.3-1994 JB/T82.4-1994 HG/T20592-2009 HG/T20614-2009 HG/T20615-2009 HG/T20623-2009 HG/T20635-2009 ASME B16.5-2009 ASME B16.47-2006 API605-1988 MSS SP 44-2006 CSA Z245.12-05-2005 EN1092-1-2007 EN1759-1-2004 DIN2630 DIN2631 DIN2632 DIN2633 DIN2634 DIN2635 DIN2636 DIN2637 DIN2638 BS1560-3.1-1989 BS4504-3.1-1989 AFNOR NF E29-200-1-2007 ISO7005-1-1992 AS2129-2000 JIS B2220-2004

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Hebei Lufeng Piping Equipment Co., Ltd

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