Welding Neck Flange

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value. It is expensive because of the design.

Standards, Dimensions & Weight

• ASME/ANSI B16.5 Class 150 WN
• ASME/ANSI B16.5 Class 300 WN
• ASME/ANSI B16.5 Class 600 WN
• ASME/ANSI B16.5 Class 900 WN
• ASME/ANSI B16.5 Class 1500 WN
• ASME/ANSI B16.5 Class 2500 WN
• ASME B16.47 Series A/MSS SP-44 Class 150 WN
• ASME B16.47 Series A/MSS SP-44 Class 300 WN
• ASME B16.47 Series A/MSS SP-44 Class 600 WN
• ASME B16.47 Series A/MSS SP-44 Class 900 WN
• ASME B16.47 Series B/API 605 Class 75 WN
• ASME B16.47 Series B/API 605 Class 150 WN
• ASME B16.47 Series B/API 605 Class 300 WN
• ASME B16.47 Series B/API 605 Class 600 WN
• ASME B16.47 Series B/API 605 Class 900 WN
• BS 3293 Class 150 WN
• BS 3293 Class 300 WN
• BS 3293 Class 600 WN
• DIN 2631 PN 6
• DIN 2632 PN 10
• DIN 2633 PN 16
• DIN 2634 PN 25
• DIN 2635 PN40

Specifications:

Size: 1/2” to 60”, DN 12mm to DN 1500mm
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
Facing: RF / RTJ

Material:view... Cabon steel: A105, A350 LF2, C22.8, S355JR
Stainless steel: A182 F304/F304L/F316/F316L/F321
Alloy steel: F11, F12
Packing: plywood case and plywood pallet

NW Long Weld Neck Flanges

NW Long Weld Neck Flanges

Tube OD sizes: 3/8 to 2 inches

Materials:
Flange: 304 or 316L stainless steel
O-rings: Viton, Buna, & silicone
Fasteners: Wingnut, SureSeal, bulkhead & EVAC clamps

Vacuum range
Elastomer seal: >=1 x 10^-8 Torr - High vacuum
EVAC metal seal: >=1 x 10^-11 Torr - UHV

Temperature range
Viton: -20°C to 200°C
Silicone: -50°C to 230°C
Buna: -30°C to 110°C
EVAC metal seal: -270°C to 150°C

Welding Neck Flange

Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.

Sunny Steel

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