1/8”–12” Threaded Carbon Steel Pipe Coupling

1/8”–12” Threaded Carbon Steel Pipe Coupling

 

Dimensions

Material Carbon Steel
Material Grade A106 Gr.B, A53 Gr.B
Thread Type NPT, BSPT, BSPP
Standard ASTM A106, ASTM A53
Surface Finish Black
Size Range 1/8" – 12"
Schedule SCH 40: 1.73mm-9.53mm, SCH 80: 2.41mm-17.48mm
Thread Standard ASME B1.20.1
Pressure Rating 150 PSI (SCH 40) / 300 PSI (SCH 80)

Detail

Black carbon steel pipe couplings are one of the most commonly used threaded fittings.

Designed for strength and sealing performance, our pipe couplings have precise threading.

Suitable for both standard commercial piping and heavy industrial applications.

Product Specifications

  • Size Range: 1/8” to 6”
  • Material:
    • ASTM A53
    • ASTM A105
    • Q235 Carbon Steel
  • Thread Standards:
    • NPT
    • BSPT
    • BSPP
  • Coupling Types:
    • Full Coupling
    • Half Coupling
  • Surface:
    • Black Finish
    • Oil Coated Optional

carbon steel pipe coupling

Built for Industrial Strength

Black steel pipe couplings are preferred in applications requiring:

  • High structural strength
  • Pressure resistance
  • Reliable threaded engagement
  • Cost-effective installation

Their durable carbon steel construction makes them suitable for long-term use in demanding industrial environments.

Common Applications

Widely used in:

  • Natural Gas Distribution
  • Fire Sprinkler Pipelines
  • Oil & Petroleum Systems
  • Mechanical Rooms
  • Industrial Water Lines
  • HVAC Piping
  • Compressed Air Systems

Accurate Threads Matter

Low-quality threaded couplings often create installation issues and leakage risks.

Our production process includes:

  • CNC threading
  • Thread ring gauge inspection
  • Wall thickness verification
  • Surface crack inspection

This ensures better compatibility with international threaded pipe standards.

pipe nipple threading machine

Export Pipe Coupling Supplier from China

We supply black steel threaded couplings to:

  • Pipe fitting importers
  • Construction contractors
  • Fire protection suppliers
  • Industrial distributors
  • OEM piping brands

Flexible MOQ and customized packaging are available.

Send us your required size and thread standard for quotation support.

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