Precision Forged Flanges & Fittings - Built for Global Markets

ASME B16.5 Forged Flanges

American standard forged flanges. NPS 1/2"-24" (DN15-DN600), Class 150-2500LB. 11 flange types. Stainless steel, duplex stainless, nickel alloys.

ASME B16.5 Flange Types

Complete range of ASME B16.5 / B16.47 forged flanges manufactured to international quality standards

ASME B16.5 Standard Overview

Complete specifications for pipe flanges and flanged fittings, NPS 1/2" through NPS 24"

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Size Range

NPS 1/2" to 24"
(DN15 to DN600)

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Pressure Classes

Class 150, 300, 400, 600,
900, 1500, 2500 LB

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Face Types

Raised Face (RF), Flat Face (FF),
Ring Type Joint (RTJ)

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Temperature Range

-29°C to +538°C
(dependent on material)

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Manufacturing

ASTM A182 / A105
Forged construction

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Testing Standards

ASME B16.5, ISO 9001
Hydrostatic & PMI testing

Available Materials for ASME Flanges

Various corrosion-resistant alloys for demanding applications

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Austenitic Stainless

304 / 304L (F8/F8A)
316 / 316L (F8/F8A)
321 (F8C), 347 (F8D)
310S, 904L

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Duplex & Super Duplex

2205 (UNS S31803/S32205, F51)
2507 (UNS S32750, F53)
32760 (UNS S32760, F55)

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Super Austenitic

904L (UNS N08904)
254 SMO (UNS S31254)
253 MA

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Nickel Alloys

Inconel 625 (N06625)
Incoloy 825 (N08825)
Hastelloy C276 (N10276)
Monel 400 (N04400)

Industry Coverage

ASME B16.5 flanges for oil & gas, petrochemical, chemical, power, water treatment

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Oil & Gas

Upstream, midstream, downstream processing facilities, offshore platforms

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Petrochemical

Refineries, chemical plants, LNG terminals, fertilizer plants

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Power Generation

Thermal, nuclear, renewable energy facilities, steam systems

Why Choose JIAJI FORGING?

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15+ Years Experience

Founded in 2010 in Wenzhou, China's stainless steel flange capital

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Full Certifications

ISO 9001, PED 2014/68/EU, AD 2000, API 6A, API 6D

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Global Export

Europe, Middle East, Southeast Asia, Central Asia, Americas