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Industrial Forged Flanges

Complete range of forged flanges. ASME B16.5/B16.47 (NPS 1/2"-60", Class 150-2500LB) and EN 1092-1 (DN10-DN2000, PN2.5-PN400). Stainless steel, duplex stainless, nickel alloys.

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Forged Flange Types

High-quality forged flanges manufactured to international standards

ASME B16.5 / B16.47 Series

NPS 1/2" - 60" | Class 150 - 2500 LB
ASME Weld Neck Flange

Weld Neck Flange

Long tapered hub, butt weld connection

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ASME Blind Flange

Blind Flange

No bore, used to seal pipelines

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ASME Slip-On Flange

Slip-On Flange

Slides over pipe, socket weld or fillet weld

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ASME Socket Weld Flange

Socket Weld Flange

Socket extends into bore, ideal for small sizes

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ASME Threaded Flange

Threaded Flange

NPT threaded bore, no welding required

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ASME Long Weld Neck Flange

Long Weld Neck Flange

Extended hub for high-pressure applications

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ASME Lap Joint Flange

Lap Joint Flange

Rotatable, used with stub end fittings

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ASME Spectacle Blind Flange

Spectacle Blind Flange

Combination of blind and spacer ring

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ASME Spade and Spacer

Spade and Spacer

Pipeline isolation components

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ASME Nipoflange

Nipoflange

Nipole with integral flange, pressure rated

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ASME Weldoflange

Weldoflange

Weld-o-let with integral flange

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EN 1092-1 Series

DN10 - DN2000 | PN2.5 - PN400
EN Type 01 Plate Flange

Type 01 - Plate Flange

Plate flange for welding, PN2.5 to PN400

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EN Type 02 Loose Plate Flange

Type 02 - Loose Plate

With weld-on plate collar or lapped pipe end

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EN Type 04 Loose Plate Flange

Type 04 - Loose Plate

With weld-neck collar, PN2.5 to PN40

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EN Type 05 Blind Flange

Type 05 - Blind

Seal pipeline ends, PN2.5 to PN400

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EN Type 11 Weld Neck Flange

Type 11 - Weld Neck

PN2.5 to PN400, DN10 to DN2000

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EN Type 12 Slip-On Flange

Type 12 - Hubbed Slip-On

Cost-effective, fillet weld connection

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EN Type 13 Threaded Flange

Type 13 - Hubbed Threaded

Female thread, easy installation

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EN Type 21 Integral Flange

Type 21 - Integral Flange

Integral loose plate for lap joint, PN6 to PN40

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EN Type 32 Weld-on Plate Collar

Type 32 - Weld-on Plate Collar

For loose plate flanges, PN2.5 to PN40

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Standards

Two Major Flange Standards

ASME for American markets, EN for European and international markets

🇺🇸

ASME / ANSI Series

Standard: ASME B16.5, B16.47
Size: NPS 1/2"-60"
Pressure: Class 150 - 2500 LB

  • Weld Neck Flanges (WN)
  • Slip-On Flanges (SO)
  • Blind Flanges (BL)
  • Threaded Flanges (TH)
  • Socket Weld Flanges (SW)
  • Lap Joint Flanges (LJ)
  • Spectacle & Spade Blinds
  • Nipoflange & Weldoflange
View ASME Flanges →
🇪🇺

EN / DIN Series

Standard: EN 1092-1
Size: DN10 - DN2000
Pressure: PN2.5 - PN400

  • Type 11 - Weld Neck
  • Type 05 - Blind
  • Type 02 - Slip-On Plate
  • Type 04 - Loose Plate
  • Type 12 - Hubbed Slip-On
  • Type 13 - Threaded
  • Type 21 - Integral Loose Plate
  • Type 32 - Loose Collar
View EN Flanges →
Materials

Available Materials

Various corrosion-resistant alloys for demanding applications

⚙️

Austenitic Stainless

304/304L, 316/316L
321, 347

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Duplex Stainless

2205 (UNS S32205)
2507 (UNS S32750)

💎

Super Austenitic

904L, 254 SMO
253 MA

🔥

Nickel Alloys

Inconel 600/625
Hastelloy C276, Monel 400

Applications

Industry Coverage

Flanges for oil & gas, petrochemical, chemical, power, water treatment

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Oil & Gas

Upstream, midstream, downstream processing facilities

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Petrochemical

Refineries, chemical plants, LNG terminals

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Power Generation

Thermal, nuclear, renewable energy facilities

Why Choose JIAJI FORGING?

🏭

15+ Years Experience

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

📜

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

Request a Quote Email: sales@jiajiforging.com