Welcome to DTC – Professional Manufacturer & Global Supplierxingyaliu60@gmail.com
Welcome to DTC – Professional Manufacturer & Global Supplierxingyaliu60@gmail.com
+86 136 9895 5587
No. 495, West Guang-Shen Avenue, Xintang Town, Zengcheng District, Guangzhou, Guangdong, China
DTC‑PIPE COUPLING & UNION‑SS/CS Series
DTC supplies high-quality steel pipe couplings and unions for reliable pipe connection and maintenance applications. Available in carbon steel, stainless steel, and alloy steel with threaded and socket weld designs according to ASME B16.11 standards.
Steel pipe couplings and unions are essential connection fittings used in industrial piping systems to join pipes, extend pipelines, and facilitate maintenance operations.
A pipe coupling is a cylindrical fitting used to connect two pipes of the same or different sizes. It provides a strong and permanent connection through threaded or socket weld designs.
A pipe union is a detachable pipe fitting consisting of three parts: two pipe ends and a central nut or connecting mechanism. Unlike couplings, unions allow pipes to be easily disconnected and reconnected without cutting the pipeline.
DTC supplies steel pipe couplings and unions in carbon steel, stainless steel, and alloy steel for applications including oil & gas, chemical processing, water treatment, HVAC, and industrial piping systems.
Steel couplings and unions provide secure connections with excellent mechanical strength and leak resistance.
Threaded designs allow quick installation without welding equipment.
Pipe unions allow easy removal of pipeline components such as valves, filters, and instruments.
Available materials meet different pressure, temperature, and corrosion requirements.
Used in low, medium, and high-pressure industrial piping applications.
| Item | Description |
|---|---|
| Product Name | Steel Pipe Coupling & Pipe Union |
| Product Type | Threaded Coupling / Socket Weld Coupling / Union |
| Standard | ASME B16.11 / MSS SP-83 |
| Manufacturing Method | Forged |
| Connection Type | Threaded / Socket Weld |
| Thread Standard | NPT / BSP / BSPT |
| Size Range | 1/8″ – 4″ (Common) |
| Pressure Rating | Class 2000, 3000, 6000 |
| Material | Carbon Steel, Stainless Steel, Alloy Steel |
| Surface Treatment | Black, Galvanized, Customized |
| Inspection | EN10204 3.1 MTC Available |
A threaded coupling connects two pipes through internal threads.
A socket weld coupling uses a socket connection where the pipe is inserted into the fitting and welded.
A threaded union consists of:
Applications:
A socket weld union provides a stronger welded connection while maintaining easy disassembly.
Typical grades:
Applications:
Typical grades:
Applications:
Typical grades:
Applications:
| Feature | Pipe Coupling | Pipe Union |
|---|---|---|
| Main Function | Connect two pipes | Connect and disconnect pipes |
| Structure | One-piece fitting | Three-piece fitting |
| Maintenance | Difficult to remove | Easy to remove |
| Installation Cost | Lower | Higher |
| Application | Permanent connections | Systems requiring maintenance |
| Common Use | Pipeline extension | Equipment connections |
| Feature | Threaded Coupling | Socket Weld Coupling |
|---|---|---|
| Connection | Threaded | Welded |
| Installation | Faster | Requires welding |
| Pressure Capability | Medium | Higher |
| Leakage Risk | Higher | Lower |
| Maintenance | Easier | Permanent |
DTC steel pipe couplings and unions are widely used in:
Typical media:
DTC supplies:
Available:
DTC supports:
Available:
A pipe coupling is a fitting used to connect two pipes together, usually through threaded or socket weld connections.
A pipe union is a detachable fitting that allows pipes to be connected and disconnected easily for maintenance.
A coupling creates a more permanent pipe connection, while a union allows quick disconnection without cutting the pipe.
Forged steel couplings are commonly manufactured according to ASME B16.11, while unions are often manufactured according to MSS SP-83.
Tel: +86 136 9895 5587
E-mail: xingyaliu60@gmail.com
