Wenzhou, Zhejiang - China's Stainless Steel Flange Capital +86-577-85986859 luvi@jiajiforging.com

Forged Flanges - ASME / EN / DIN / GB

21 flange types across ASME B16.5/B16.47 and EN 1092-1/DIN standards. DN15-DN2000. Class 150-3000LB / PN0.6-42MPa.

Product Summary

JIAJI FORGING manufactures industrial forged flanges in three major standard systems: ASME (US), EN/DIN (European), and GB (Chinese). Materials include austenitic stainless steel, duplex stainless steel (2205, 2507), and nickel-based alloys (Inconel, Hastelloy, Monel). All products ISO 9001 and PED-AD2000 certified.

ASME B16.5 / B16.47 Forged Flanges

Sizes: 1/2" - 60" | Pressure: Class 150 - 2500LB | Face Types: RF, FF, RTJ

[ BL ]

Blind Flange

ASME B16.5 / B16.48
1/2" - 24" | Class 150 - 2500LB
Used to seal pipe ends. No bore - full closure.

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[ SO ]

Slip On Flange

ASME B16.5
1/2" - 24" | Class 150 - 900LB
Cost-effective for low-pressure systems.

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[ WN ]

Weld Neck Flange

ASME B16.5 / B16.47
1/2" - 60" | Class 150 - 2500LB
For high-pressure, high-temperature applications.

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[ LJ ]

Lap Joint Flange

ASME B16.5
1/2" - 24" | Class 150 - 2500LB
With stub end for easy maintenance.

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[ SW ]

Socket Weld Flange

ASME B16.5
1/2" - 3" | Class 150 - 1500LB
For small-bore high-pressure piping.

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[ TH ]

Threaded Flange

ASME B16.5
1/2" - 24" | Class 150 - 300LB
No welding required. NPT thread.

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[ SP ]

Spectacle Blind Flange

ASME B16.48
1/2" - 24" | Class 150 - 2500LB
Spade & Blind combined for isolation.

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[ SP ]

Line Spade and Spacer

ASME B16.48
1/2" - 24" | Class 150 - 2500LB
Spade (blank) or Spacer for line isolation.

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[ NF ]

Nipoflange

ASME B16.5 + BW Nipple
1/2" - 24" | Class 150 - 2500LB
Weld Neck flange with integral nipple.

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[ WF ]

Weldoflange

ASME B16.5 + BW Weld
1/2" - 24" | Class 150 - 2500LB
Weld Neck with butt weld outlet.

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[ LWN ]

Long Weld Neck Flange

ASME B16.5 / B16.47
1/2" - 60" | Class 150 - 2500LB
Extended hub for critical services.

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EN 1092-1 / DIN Forged Flanges

Sizes: DN10 - DN2000 | Pressure: PN2.5 - PN400 | Type 01 to Type 43

[ WN ]

Weld Neck Flange (Type 11)

EN 1092-1 / DIN 2632-2635
DN15 - DN1000 | PN2.5 - PN160
For high-pressure applications.

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[ LWN ]

Long Weld Neck Flange (Type 01)

EN 1092-1 Type 01
DN15 - DN1000 | PN2.5 - PN160
Extended neck for critical piping.

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[ BL ]

Blind Flange (Type 05)

EN 1092-1 / DIN 2527
DN10 - DN2000 | PN2.5 - PN400
For sealing pipe ends.

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[ SO ]

Slip On Flange (Type 02)

EN 1092-1 / DIN 22776
DN10 - DN600 | PN2.5 - PN40
Cost-effective for low-pressure.

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[ PL ]

Plate Flange (Type 04)

EN 1092-1 Type 04
DN10 - DN600 | PN2.5 - PN40
Loose plate for easy assembly.

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[ LJ ]

Lap Joint Flange (Type 03)

EN 1092-1 / DIN 2642
DN10 - DN500 | PN2.5 - PN40
With stub collar for maintenance.

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[ SW ]

Socket Weld Flange (Type 12)

EN 1092-1 Type 12
DN10 - DN100 | PN2.5 - PN400
For small-bore high-pressure.

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[ TH ]

Threaded Flange (Type 13)

EN 1092-1 / DIN 2566
DN10 - DN150 | PN2.5 - PN160
Rp/RC thread (ISO 7-1).

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[ WC ]

Welding Neck Collar (Type 32)

EN 1092-1 Type 32
DN10 - DN300 | PN2.5 - PN100
Weld neck with integral collar.

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[ OR ]

Orifice Flange (Type 41/42)

EN 1092-1 Type 41 / Type 42
DN15 - DN600 | PN2.5 - PN160
With pressure tapping points.

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Available Standards & Specifications

ASME / ANSI Standards

  • ASME B16.5 - 1/2" to 24"
  • ASME B16.47 - 26" to 60"
  • ASME B16.48 - Spectacle Blind, Spade & Spacer
  • Class: 150, 300, 400, 600, 900, 1500, 2500LB

EN / DIN Standards

  • EN 1092-1 - Steel flanges (Type 01-43)
  • DIN 2502 - PN series WN flanges
  • DIN 2527 - Blind flanges
  • PN: 2.5, 6, 10, 16, 25, 40, 63, 100, 160, 250, 400

GB / HG Standards

  • GB/T 9115-9123 - WN, SO, BL, LJ flanges
  • HG/T 20592 - European style plate flanges
  • SH 3406 - Petrochemical flanges
  • DN: 10, 15, 20 ... up to DN2000

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