Flange

Forged flanges are widely used in piping systems to connect pipes, valves, pumps, and other equipment under high pressure and temperature conditions. They are manufactured according to international standards with a wide range of sizes, materials, and pressure ratings.

Main Standards & Specifications

• ANSI / ASME (B16.5, B16.47)
  Size: 1/2″–80″ (DN15–DN2000)
  Pressure: Class 150–2500
  Types: Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint

• EN 1092-1
  Size: DN15–DN2000
  Pressure: PN6–PN100
  Types: Plate, Loose, Blind, Welding Neck, Slip On, Threaded

• DIN
  Size: DN15–DN2000
  Types: Slip On, Weld Neck, Blind, Threaded, Loose

• GOST
  Size: DN15–DN2000
  Pressure: PN6–PN40
  Types: Plate & Welding Neck

• JIS B2220
  Size: 15A–2000A
  Pressure: 1K–40K
  Types: SOP, Blind, SOH

Materials

Carbon Steel, Stainless Steel (304/304L, 316/316L), Alloy Steel

Coating & Packing

Black paint, yellow paint, rust-proof oil, cold & hot dip galvanizing
Packing: Seaworthy plywood cases or wooden pallets

BLIND FLANGES

Blind flanges are used to close the end of a piping system or pressure vessel opening.

• Size: 1/2″–24″ (custom up to 48″)

• Pressure Rating: Class 150–2500

• Thickness: SCH 10(S)–SCH 160

• Facing: RF, RTJ

• Material: Carbon Steel, Alloy Steel, Stainless Steel

SLIP-ON FLANGES

Slip-on flanges are easy to install and suitable for low to medium pressure applications.

• Size: 1/2″–24″ (custom up to 60″)

• Pressure Rating: Class 150–2500

• Facing: RF, RTJ

• Material: Carbon Steel, Alloy Steel, Stainless Steel

WELD NECK FLANGES

Weld neck flanges provide excellent strength and are ideal for high-pressure and high-temperature services.

• Size: 1/2″–24″ (custom up to 48″)

• Pressure Rating: Class 150–2500

• Thickness: SCH 10(S)–SCH 160

• Facing: RF, RTJ

• Material: Carbon Steel, Alloy Steel, Stainless Steel

LAP JOINT FLANGES

Lap joint flanges are used together with stub ends and allow easy alignment and dismantling.

• Size: 1/2″–24″

• Thickness: SCH 10–SCH 160

• Materials:

  • Carbon Steel: ASTM A105, A350 LF2

  • Stainless Steel: ASTM A182 F304/L, F316/L, F321

  • Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91

THREADED FLANGES

Threaded flanges are installed without welding and are suitable for specific pressure systems.

• Size: 1/2″–24″

• Pressure Rating: Class 150–2500

• Facing: RF, RTJ

• Material: Carbon Steel, Alloy Steel, Stainless Steel

SOCKET WELD FLANGES

Socket weld flanges are commonly used for small diameter, high-pressure piping.

• Size: 1/2″–24″ (special: 24″–60″)

• Pressure Rating: Class 150–2500

• Thickness: SCH 40–SCH 160

• Facing: RF, RTJ

• Material: Carbon Steel, Alloy Steel, Stainless Steel