Carbon steel threaded half coupling is a forged industrial pipe fitting designed for high-pressure branch connections in piping systems. It is manufactured in accordance with ASME B16.11 standards and widely used in oil & gas, petrochemical, power generation, and industrial process piping systems.
This fitting features one threaded end and one welded end, allowing it to be installed on pipelines or pressure equipment where a branch connection is required without interrupting the main line integrity.
A threaded half coupling is a type of forged fitting used to create a reinforced outlet on a pipe or vessel. The welded end is permanently attached to the main pipe wall, while the threaded end provides a secure connection point for valves, gauges, or small-bore piping.
Compared with full couplings, half couplings are specifically designed for branch connections, instrumentation lines, and pressure tapping points.
| Parameter | Description |
|---|---|
| Product Type | Threaded Half Coupling |
| Material Grades | ASTM A105 / A350 LF2 / SS304 / SS316 |
| Manufacturing Standard | ASME B16.11 |
| Pressure Ratings | 2000LB / 3000LB / 6000LB / 9000LB |
| Size Range | 1/8” to 4” |
| Connection Type | Threaded (NPT / BSP / BSPT) + Weld End |
| Manufacturing Process | Forged + CNC Machining |
| Heat Treatment | Normalized / Quenched & Tempered (as required) |
| Surface Finish | Black Oxide / Galvanized / Anti-corrosion coating |
| Testing | Hydrostatic test / Dimension inspection / NDT (optional) |
Carbon steel threaded half couplings are engineered for critical industrial piping systems, including:
| Industry | Application |
|---|---|
| Oil & Gas | Pipeline branches, refinery systems, offshore platforms |
| Petrochemical | Process piping, reactor connections, chemical transfer lines |
| Power Generation | Steam lines, boiler auxiliary piping systems |
| Pressure Systems | Vessel nozzles, tapping points, instrument ports |
| Water Treatment | High-pressure distribution pipelines |
| Industrial Facilities | Equipment piping interfaces and maintenance lines |
Forged carbon steel ensures superior strength and resistance to mechanical stress.
CNC-machined threads ensure tight sealing and easy installation.
Manufactured according to ASME B16.11 dimensional and performance standards.
Suitable for 2000LB to 9000LB high-pressure service conditions.
Available in carbon steel, low-temperature steel, and stainless steel grades.
| Feature | Half Coupling | Full Coupling |
|---|---|---|
| Structure | One threaded end + one weld end | Two threaded ends |
| Function | Branch connection | Straight pipeline connection |
| Installation Position | Pipe wall / vessel outlet | Inline pipeline |
| Engineering Use | Instrumentation / tapping / branch outlet | Pipe extension or repair |
Each product is manufactured under strict quality control procedures, including:
Our threaded half couplings comply with international piping standards, including:
For pricing, technical drawings, material certificates, or bulk order inquiries, please contact our engineering and sales team.
We support OEM manufacturing and global export supply for industrial pipe fitting projects.
