Weld Neck Flange Hubbed weld neck / Taper hub

Name: Weld Neck Flange
Brand: GUANGZHU FLANGE
SKU: WN

The weld neck flange is butt-welded to the pipe through its tapered hub, so the wall thickness transitions gradually into the pipe wall and stress concentration at the joint is greatly reduced

Product description

The weld neck flange is butt-welded to the pipe through its tapered hub, so the wall thickness transitions gradually into the pipe wall and stress concentration at the joint is greatly reduced. It is the workhorse flange for high-pressure, high-temperature, flammable and other critical services in petrochemical, refining, power generation and long-distance gas transmission lines.

Key features

Tapered hub gives the best fatigue and stress performance of any flange type
Full-penetration butt weld, suitable for 100% RT or UT examination
Available from Class 150 through Class 2500
Manufactured to ASME, EN, DIN, JIS, GOST and other standards

WN Class 150 / 300 / 600 / 900 / 1500 / 2500

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Technical specification

Specification and supply scope

Weld Neck Flange
Standards	WN · Produced to ASME / EN / DIN / JIS / BS / GOST standards
Size range	1/2" - 24" (DN15 - DN600); up to 60" (DN1500) for large sizes
Pressure rating	Class 150 / 300 / 600 / 900 / 1500 / 2500; PN6 – PN100
Available materials	A105, A350 LF2, Q235, 20#, F304/F316L, F11, F22, F51 (2205)
Face type	RF raised face / FF flat face / RTJ ring joint
Surface treatment	Rust-preventive oil / black paint / hot-dip galvanizing / epoxy coating (optional)
Packing	Fumigated wooden cases or pallets, steel-strapped, with material certificate and packing list inside

Typical applications

Where this product is typically used

Petrochemical plantsRefining & hydrotreatingPower plant steam linesLong-distance gas pipelinesHigh-pressure fertilizer & coal chemical

Applications are indicative only. Final selection depends on design pressure, temperature, media and site conditions - our technical team is glad to advise.