Pipe Fitting

We provide nickel alloy and stainless steel pipe fittings produced in accordance with ASME B16.9 and ASTM standards. Made from high-quality nickel alloys and stainless steel, these forged fittings offer excellent pressure resistance, corrosion resistance and high-temperature stability. Product range includes elbows, tees, reducers, caps, couplings and sockets. Precision forming and strict dimensional control ensure stable performance and easy installation. Suitable for high-pressure fluid pipelines in petrochemical, chemical, oil & gas and energy industries. Custom specifications and special alloy options are available to meet various demanding applications.

Material Standard

• Specification for Wrought Nickel and Nickel Alloy Fittings
• Covers chemical, mechanical properties, heat treatment, testing

Dimensional Standards

• ASME B16.9: Buttweld Fittings (NPS 1/2" ~ 24") – High-pressure seamless/welded
• ASME B16.11: Forged Socket-Weld / Threaded Fittings (NPS 1/8" ~ 4") – Ultra-high-pressure
• MSS SP-97: Weldolet/Sockolet (Branch connections)
• ASME B16.28: Short-radius & small-bore fittings

Pressure Ratings

• Buttweld (B16.9): SCH 80S, XS, SCH 160, XXS
• Forged (B16.11):
  • Socket-Weld: 3000#, 6000#, 9000#
  • Threaded: 2000#, 3000#, 6000#

Common High-Pressure Nickel Alloys

• Monel 400 (N04400)
• Inconel 625 (N06625)
• Hastelloy C276 (N10276)
• Incoloy 825 (N08825)
• Alloy 20 (N08020)
• Nickel 200/201 (N02200/02201)

High-Pressure Fitting Types & Forms

1. Buttweld Fittings (ASME B16.9)

• 90° Long Radius Elbow (LR) – Standard high-pressure
• 45° Elbow
• 180° Bend
• Equal Tee / Reducing Tee

  
• Concentric / Eccentric Reducer

  
• Cap

  
• Cross

  

2. Forged Socket-Weld Fittings (ASME B16.11)

• Socket-Weld 90°/45° Elbow
• Socket-Weld Tee
• Socket-Weld Coupling / Full Coupling
• Socket-Weld Cap / Plug
  

3. Threaded (Screwed) Fittings (ASME B16.11)

• Threaded Elbow, Tee, Cross, Nipple, Bush, Plug
• Used for small-bore, no-weld maintenance

4. Branch Fittings (MSS SP-97)

• Weldolet: Buttweld branch (high-pressure)
• Sockolet: Socket-weld branch
• Threadolet: Threaded branch

Standard Sizes (NPS)

Buttweld (ASME B16.9)

• 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 3", 4", 6", 8", 10", 12", 14", 16", 18", 20", 24"

Forged Socket-Weld / Threaded (ASME B16.11)

• 1/8", 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4"

Wall Thickness (High-Pressure Schedules)

• SCH 80S: Standard high-pressure
• XS (Extra Strong): Equivalent to SCH 80S
• SCH 160: Extra-high-pressure
• XXS (Double Extra Strong): Ultra-high-pressure

Selection Guide

• Buttweld (B16.9): Preferred for high-pressure nickel alloy (strongest joint)
• Socket-Weld (B16.11): Small-bore (≤4"), high-pressure, easy field installation
• Threaded: Low-temperature, non-cyclic, small-bore service
• Class 3000/6000: Most common for high-pressure process lines
• SCH 160/XXS: Extreme pressure / temperature

Typical Applications

• Oil & gas wellheads / flow lines
• High-pressure reactors (chemical/petrochemical)
• Power generation (boiler, HP steam)
• Offshore seawater injection
• Acid / corrosive HP process lines