Weld Neck Flange

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Weld Neck Flange

Size 3/8"~160" (DN10~DN4000)

American System: CLASS 150,CLASS 300,CLASS 400,CLASS 600,CLASS 900,CLASS 1500
European System: PN 6,PN 10,PN 16,PN 25,PN 40,PN 63, PN 100

Seal Face:
American System: Full Face (FF), Raised Face (RF), Tongue Face (T), Groove Face (G), Female Face (F), Male Face (M), Ring Joint Face (RJ)
European System: Full Face (FF), Raised Face (RF), Tongue Face (T), Groove Face (G), Female Face (F), Male Face (M), Ring Joint Face (RJ)

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
High 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

GB/T9115.1-2000 GB/T9115.2-2000 GB/T9115.3-2000 GB/T9115.4-2000
GD2000 GD87-1101
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
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
JIS B2220-2004

Our weld neck flange, as a kind of industrial steel flanges, comes with the feature of hard to distortion and good sealing. It is applicable for pipelines with high pressure and high or low temperature, or tubes where pressure and temperature fluctuate greatly. Also it is used in transporting expensive, inflammable and explosive. In addition, our products have a complete specification and reasonable price. And our products are the first choice of many clients and purchasers.

We are a professional weld neck flange supplier in China. We also provide blind flange, high pressure slip on flange, alloy steel pipe, steel pipe cap, stainless steel pipe, and much more.

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  • Blind FlangeOur blind flange, with a long service life and reasonable structural design, is made of carbon steel, alloy steel and stainless steel, .etc. In terms of isolation and blockade, it has the same function with head and cap. Due to its good sealing, blind flange can be widely applicable to isolate system. Also, it can be used for blocking pipes' ends and it is convenient to clean garbage while troubleshooting.
  • Slip on Weld FlangeHigh pressure slip on flange connects equipment or pipes by fillet weld. And in terms of its pressure and seal face, it adopts both European and American system. It is made of carbon steel, alloy steel, stainless steel, low temperature steel and high performance steel. This flange comes with single-side welding and double-side nut connection.