304 / 316 Stainless Steel Pipe Coupling | NPT BSP Threaded, 1/8” to 12”

304 / 316 Stainless Steel Pipe Coupling | NPT BSP Threaded, 1/8” to 12”

Our stainless steel pipe couplings offer secure threaded connections. They are made from 304 to 316 stainless steel, widely used in many complex pipelines and environments. We supply full and half couplings with precise NPT, BSPT, and BSPP threads.

Dimensions

Material Stainless Steel
Material Grade SS304, SS316
Thread Type NPT, BSPT, BSPP
Standard ASTM A312
Surface Finish Polished
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

Compared with galvanized or black steel couplings, stainless steel threaded couplings provide:

  • Better corrosion resistance
  • Longer service life
  • Cleaner internal flow surface
  • Reduced maintenance costs
  • Better performance in humid or outdoor conditions

This makes them ideal for long-term industrial installations.

stainless steel pipe coupling

Available Stainless Steel Grades

SS304 Pipe Coupling

Economical and versatile for general industrial piping.

SS316 / SS316L Pipe Coupling

Enhanced resistance against chlorides, chemicals, and saltwater exposure.

Product Specifications

  • Size Range: 1/8” to 6”
  • Thread Types:
    • NPT
    • BSPT
    • BSPP
  • Pressure Rating:
    • Class 150
    • Class 3000
    • Class 6000
  • Connection Type:
    • Female Threaded
  • Surface Finish:

Typical Applications

Our stainless steel threaded couplings are commonly used in:

  • Chemical Processing Systems
  • Food & Beverage Pipelines
  • Water Treatment Facilities
  • Marine Pipe Systems
  • Fire Protection Lines
  • Industrial Gas Systems
  • Pharmaceutical Piping

Precision Thread Manufacturing

Thread accuracy directly affects sealing performance.

Our factory uses CNC threading equipment and calibrated gauges to ensure:

  • Accurate thread depth
  • Smooth installation
  • Reduced leakage risk
  • Better compatibility with international pipe standards

Each batch undergoes thread inspection before shipment.

OEM Stainless Steel Coupling Manufacturer

We support customized production for distributors and industrial projects, including:

  • Laser logo marking
  • Special dimensions
  • Custom packaging
  • Non-standard threads
  • OEM export cartons

Material test certificates are available upon request.

Contact us for stainless steel pipe coupling catalogs, technical drawings, and wholesale pricing.

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