Threaded Fittings

Precision-threaded pipe fittings manufactured for dependable mechanical connections on-site.

As a leading manufacturer and global supplier of high-integrity industrial connections, Nucleus Forge delivers precision-engineered threaded fittings 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 Threaded Fittings

90 Degree Elbow

90 Degree Elbow

SPECIFICATION:

Size: 1/4″ to 4″

Type: Equal / Unequal

Pressure Class: 3000#, 6000#, 9000#

End Connection: Threaded

45 Degree Elbow

45 Degree Elbow

SPECIFICATION:

Size: 1/4″ to 4″

Pressure Class: 3000#, 6000#, 9000#

End Connection: Threaded

Cross

Cross

SPECIFICATION:

Size: 1/4″ to 4″

Type: Equal / Unequal

Pressure Class: 3000#, 6000#, 9000#

End Connection: Threaded

Coupling

Coupling

SPECIFICATION:

Size: 1/4″ to 4″

Type: Half, Full, Reducing

Pressure Class: 3000#, 6000#, 9000#

End Type: Threaded

Union

Union

SPECIFICATION:

Size: 1/4″ to 4″

Type: Equal / Unequal

Standard: BS – 3799

Pressure Class: 3000#, 6000#, 9000#

End Connection: Threaded

Tee

Tee

SPECIFICATION:

Size: 1/4″ to 4″

Type: Equal / Unequal

Pressure Class: 3000#, 6000#, 9000#

End Connection: Threaded

Material Grades of Threaded Fittings

Stainless Steel

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

  • ASTM A182 F304/304L, F316/316L
  • ASTM A182 F321/321H, F347/347H
  • ASTM A182 F317/317L, F316Ti

Carbon Steel

Optimized for high-pressure utility lines, plant air/gas distributions, and generic process networks needing premium joint structural integrity.

  • ASTM A105 / A105N (Forged For High-Pressure Service)
  • ASTM A350 LF2 / LF3 (Low-Temperature Low-Yield Systems)
  • ASTM A197 / A47 (Malleable Iron for Low-Pressure Piping)

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
  • ASTM A182 F11 / F12 / F22
  • ASTM A182 F91 / F92

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