Flanges

High Quality Flanges engineered to withstand extreme thermal fluctuations and severe mechanical stress for maximum durability.

As a leading manufacturer and global supplier of high-integrity industrial connections, Nucleus Forge delivers precision-engineered flanges built to withstand extreme thermal fluctuations and severe mechanical stress for maximum durability. Our extensive inventory strictly adheres to international design standards, ensuring absolute leak-proof reliability across high-pressure pipeline infrastructures, chemical processing plants, and heavy engineering applications worldwide.

Types of Flanges

Weld Neck Flange

Weld Neck Flange

SPECIFICATION:

Size: 1/2” to 60”

Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

Standard: ASME B16.5, ASME B16.47, DIN

Slip-On Flange

Slip-On Flange

SPECIFICATION:

Size: 1/2″ to 24” (Larger sizes available on request)

Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

Standard: ASME B16.5, ASME B16.47 Series A & B

Blind Flange

Blind Flange

SPECIFICATION:

Size: 1/2″ to 48” (Series A & B)

Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

Standard: ASME B16.5, ASME B16.47

Socket-Weld Flange

Socket-Weld Flange

SPECIFICATION:

Size: 1/2″ to 4” (Small bore piping systems)

Pressure Class: 150#, 300#, 600#, 900#, 1500#

Standard: ASME B16.5

Threaded Flange

Threaded Flange

SPECIFICATION:

Size: 1/2″ to 60”

Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

Standard: ASME B16.5, ASME B16.47, DIN, NPT, BSP

Lap-Joint Flange

Lap-Joint Flange

SPECIFICATION:

Size: 1/2″ to 24”

Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

Standard: ASME B16.5

Material Grades of flanges

Stainless Steel

Engineered for high-purity fluid processing, severe chemical environments, and extreme cryogenic operating regimes with superior intergranular corrosion defense.

  • ASTM A182 F304, F304L, F304H
  • ASTM A182 F316, F316L, F316H, F316Ti
  • ASTM A182 F321, F321H, F310, F317L, F347

Carbon Steel

Optimized for high-pressure industrial pipeline networks, hydrocarbon transmission lines, and structural process installations requiring robust tensile load limits.

  • ASTM A105 / A105N (Forged Carbon)
  • ASTM A350 LF1, LF2, LF3 (Low Temperature)
  • ASTM A694 F42, F52, F60, F65, F70

Alloy Steel

Formulated with precise chromium, molybdenum, and vanadium contents to maintain structural creep resistance and high tensile properties at elevated temperatures.

  • ASTM A182 F1, F5, F9, F11
  • ASTM A182 F12, F22, F91 Power Grades

Duplex & Super Duplex Steel

Combines austenitic and ferritic structures to deliver exceptional yield strength and superior resistance to chloride-induced stress corrosion cracking.

  • ASTM A182 F51 (Duplex 2205)
  • ASTM A182 F53 (Super Duplex 2507)
  • ASTM A182 F55 / F60

Nickel & High-Nickel Alloys

Engineered for extreme performance in highly aggressive chemical processing, acid handling, and severe high-temperature environments.

  • ASTM B564 Monel 400 (UNS N04400)
  • ASTM B564 Inconel 600 / 625 (UNS N06600 / N06625)
  • ASTM B564 Incoloy 800 / 825, Hastelloy C276