Precision Forged Flanges & Fittings - Built for Global Markets
Request a Quote | market@jiajiforging.com | +86-21-60708463
Get a Quote

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.

Product Gallery

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

View Details
ASME Blind Flange

Blind Flange

No bore, used to seal pipelines

View Details
ASME Slip-On Flange

Slip-On Flange

Slides over pipe, socket weld or fillet weld

View Details
ASME Socket Weld Flange

Socket Weld Flange

Socket extends into bore, ideal for small sizes

View Details
ASME Threaded Flange

Threaded Flange

NPT threaded bore, no welding required

View Details
ASME Long Weld Neck Flange

Long Weld Neck Flange

Extended hub for high-pressure applications

View Details
ASME Lap Joint Flange

Lap Joint Flange

Rotatable, used with stub end fittings

View Details
ASME Spectacle Blind Flange

Spectacle Blind Flange

Combination of blind and spacer ring

View Details
ASME Spade and Spacer

Spade and Spacer

Pipeline isolation components

View Details
ASME Nipoflange

Nipoflange

Nipole with integral flange, pressure rated

View Details
ASME Weldoflange

Weldoflange

Weld-o-let with integral flange

View Details

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

View Details
EN Type 02 Loose Plate Flange

Type 02 - Loose Plate

With weld-on plate collar or lapped pipe end

View Details
EN Type 04 Loose Plate Flange

Type 04 - Loose Plate

With weld-neck collar, PN2.5 to PN40

View Details
EN Type 05 Blind Flange

Type 05 - Blind

Seal pipeline ends, PN2.5 to PN400

View Details
EN Type 11 Weld Neck Flange

Type 11 - Weld Neck

PN2.5 to PN400, DN10 to DN2000

View Details
EN Type 12 Slip-On Flange

Type 12 - Hubbed Slip-On

Cost-effective, fillet weld connection

View Details
EN Type 13 Threaded Flange

Type 13 - Hubbed Threaded

Female thread, easy installation

View Details
EN Type 21 Integral Flange

Type 21 - Integral Flange

Integral loose plate for lap joint, PN6 to PN40

View Details
EN Type 32 Weld-on Plate Collar

Type 32 - Weld-on Plate Collar

For loose plate flanges, PN2.5 to PN40

View Details
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

🔷

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

🛢️

Oil & Gas

Upstream, midstream, downstream processing facilities

⚗️

Petrochemical

Refineries, chemical plants, LNG terminals

⚡

Power Generation

Thermal, nuclear, renewable energy facilities

Related Technical Resources

Deepen your knowledge with our in-depth technical guides written by JIAJI engineers:

Standards & Compliance

ASME B16.5, EN 1092-1, DIN, GB flange & fitting standards explained with comparison tables.

Read Guide →

Design & Engineering

Flange face types, pressure ratings, bolt torque calculation & gasket selection best practices.

Read Guide →

Material Selection

Carbon steel, stainless steel, duplex, super duplex & nickel alloy selection guide.

Read Guide →

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

🌍

Global Export

Europe, Middle East, Southeast Asia, Central Asia

Request a Quote Email: sales@jiajiforging.com