ASTM A182 F55 Weld Neck Flange, ASME B16.5, 4 Inch, 150 LB

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Key Specifications / Features

We are a reliable ASTM A182 F55 weld neck flange supplier offering super duplex stainless steel WN flanges made to ASME B16.5. This model is 4-inch, DN100, 150 LB, with wall thickness WT SCH 10S and a raised face finish. The tapered hub design reduces pipeline stress transition, delivering outstanding resistance to pitting and chloride corrosion. Suitable for chemical, offshore, and oil and gas piping projects, our precision-machined flanges ensure a stable welding connection and long service life under harsh fluid working conditions.

Model No.: LD-20260921-WNF-01
Hits: 4
Categories: Weld Neck Flanges
Tags: 4 Inch Flange, Class 150 LB Flange, DN100 Flange

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Detail Information

Product Name: Super Duplex Stainless Steel Weld Neck Flange
Type: WN (Weld Neck) Flange
Nominal Size: 4 inch, DN100
Material Grade: ASTM A182 Gr. F55
Wall Schedule: SCH 10S
Design & Manufacturing Standard: ASME B16.5
Pressure Class: 150 LB
Face Finish: RF (Raised Face)
Heat No.: T204484

This weld neck flange is forged from ASTM A182 Gr. F55 super duplex stainless steel and fully complies with the ASME B16.5 specification. It features a 4-inch nominal bore, SCH10S wall thickness, a 150 lb pressure rating, and a raised face sealing surface. The tapered hub design helps reduce stress transition for butt-welded pipe connections. The RF face provides stable gasket seating. This flange is ideal for corrosive medium piping systems in chemical, marine, and oilfield service.

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