Pipe Couplings

Available Stainless Steel Grades

SS304

  • Standard austenitic stainless steel

  • Good corrosion resistance

  • Cost-effective solution

  • Suitable for general industrial applications

SS316 / 316L

  • Contains molybdenum for enhanced corrosion resistance

  • Excellent performance in marine and chemical environments

  • Ideal for saltwater and aggressive media

Black steel pipe couplings typically feature:

  • Natural black oxide finish

  • Light anti-rust oil coating

  • Industrial black painted coating (optional)

Unlike galvanized fittings, black steel fittings are designed for indoor or protected environments. For outdoor or corrosive environments, painting or additional coating is recommended.

We manufacture high-quality galvanized steel pipe couplings for reliable connections in industrial systems.

Our galvanized steel pipe coupling products are engineered for durability, corrosion resistance, and easy installation across various applications.

1 Application

Fire sprinkler pipeline system
Industrial gas pipeline
Boiler room piping
Water supply systems
Mechanical equipment pipelines

2 Cost Advantage

Our galvanized steel pipe coupling helps reduce installation costs through precise threads and consistent dimensions.

It minimizes leakage risk, lowering long-term maintenance expenses.

The corrosion-resistant coating extends service life, improving overall project ROI for procurement teams.

3 Easy Installation

We offer galvanized steel pipe coupling with standard NPT and BSP threads.

The threads are accurately machined, ensuring smooth engagement on-site.

No special tools are required, making installation fast and efficient for contractors.

4 Material Options

We provide multiple material options for the same application needs.

Galvanized Carbon Steel offers strong corrosion protection for outdoor and water systems.

Black Carbon Steel is cost-effective for dry indoor environments.

Stainless Steel provides superior corrosion resistance in chemical or marine conditions.

ASTM B43 Brass is ideal for low-pressure and anti-corrosion applications.

5 Production Capacity

We operate large-scale production lines for galvanized steel pipe coupling manufacturing.

Our monthly capacity ensures stable supply for bulk orders and project demands.

We support OEM and custom specifications, including size, thread type, and surface finish.

Strict quality control guarantees compliance with international standards.

6 Compatible Products

Our galvanized steel pipe coupling can be used with:

Pipe Nipple
Reducer Coupling
Elbow
Pipe Union
Valve
Flange

7 Size & Drawing

We produce galvanized steel pipe coupling in a wide size range from 1/8” to 6”.

Standards include ASTM, ANSI, DIN, and BS.

We provide detailed CAD and PDF drawings for engineering and project approval.

8 FAQ

What is a galvanized steel pipe coupling used for?
It is used to connect two pipes with the same diameter in threaded piping systems.
It ensures a secure and leak-free connection in water, gas, and industrial pipelines.

What thread standards are available?
We offer NPT and BSP thread standards.
Custom thread types can also be provided based on project requirements.

Can you provide OEM galvanized steel pipe coupling?
Yes, we support full OEM service.
We can customize size, marking, packaging, and surface treatment according to your specifications.

Why Choose Our Couplings?

Built tough. Coated to last. Threaded to connect.

  • Manufactured to international standards (ASME / EN / BS)
  • 100% pressure-tested before shipment
  • Consistent zinc coating thickness (≥ 45 μm)
  • Available in bulk OEM packaging
  • Fast lead times with global shipping

We manufacture threaded couplings that connect two pipes or pipe nipples in a straight line.

Our 304 stainless steel couplings are known for corrosion resistance, durability, and strength. They perform well in environments with moisture, chemicals, or temperature changes, where carbon steel may fail.

In threaded piping systems, couplings are used with pipe nipples, elbows, tees, and valves. This versatility makes them essential for industrial installations, maintenance, and equipment assembly.

As a pipe fitting manufacturer, we produce stainless steel pipes and fittings that meet common standards and provide accurate NPT or BSP threads.

Technical Specifications

coupling size chart

Applications

Fire Sprinkler Systems

Gas Pipeline Systems

Industrial Water Supply

Mechanical Equipment Piping

Installation Guide

Correct installation ensures a secure, leak-free plumbing system.

  1. Clean the pipe threads before installation.
  2. Apply PTFE thread seal tape or pipe sealant (optional).
  3. Make the coupling connect with the piping through threads.
  4. Tighten using a pipe wrench, avoiding over-tightening.
  5. Check alignment and test the connection for leaks.

female thread detail of stainless steel pipe coupling

Compatible Pipe Fittings

We use pipe couplings with other threaded fittings to build flexible, efficient pipelines. Pipe elbows change direction, pipe tees create branches, and valves control flow.

Why Choose Our Factory

We have extensive manufacturing experience producing threaded pipe fittings.

Each product undergoes dimensional inspection and thread verification.

Our factory maintains stable production to support bulk orders.

Deliver orders promptly to meet urgent project schedules.

We support customized products and packaging according to customer requirements.

FAQ

What is the difference between a pipe nipple and a pipe coupling?
A pipe nipple is a male-thread fitting, while a pipe coupling is a female pipe fitting.

What materials are available for pipe couplings?
Common materials include galvanized steel, black carbon steel, and stainless steel.

What thread standards do you offer?
We produce fittings compatible with NPT, BSP, and BSPT thread standards.

Can you produce custom sizes or specifications?
Yes, we are a professional pipe fitting manufacturer and can provide custom sizes, thread types, and packaging to meet project requirements.

Can you supply pipe fittings in bulk for projects?

Yes, we specialize in bulk production for distributors, contractors, and industrial projects. Our factory ensures stable quality, consistent thread accuracy, and reliable delivery times.

What is the difference between a pipe nipple and a pipe coupling?

A pipe nipple has external threads on both ends, while a pipe coupling has internal threads.
In most threaded piping systems, a pipe nipple connects two couplings or other female threaded fittings.

Do you provide NPT and BSP threaded pipe fittings?

Yes, we manufacture threaded pipe fittings according to international standards, including NPT and BSP threads, ensuring compatibility with global piping systems.

Ready to discuss your project?

Contact us today for expert guidance and competitive quotes.