Repsol Steel LLP is a trusted industrial pipe coupling supplier for buyers across the USA, Europe, Africa, Mexico, and Oman. We supply a comprehensive range of pipe couplings — including full couplings, half couplings, and reducing couplings in socket weld and threaded configurations — in ASTM A105, A182 F304, F316, F321, F11, F22, and F91 materials for connecting pipes and fittings in high-pressure and small-bore piping systems.
With over 25 years of combined industry experience and a proven export network, we serve EPC contractors, procurement teams, maintenance engineers, and fabrication units worldwide. Every pipe coupling we supply complies with ASME B16.11, ASTM A105, ASTM A182, ASTM A350, and MSS SP-83 standards, with full material traceability, dimensional inspection reports, and documentation that meets the requirements of projects in the USA, Europe, Africa, Mexico, and Oman.
Whether you require standard A105 full couplings for a utility piping system in the USA, F316 reducing couplings for a petrochemical plant in Europe, or F11 half couplings for a high-temperature power plant in Africa or Oman — Repsol Steel LLP delivers the right pipe coupling solution, on time, with complete export documentation.
A complete pipe coupling portfolio covering full couplings, half couplings, and reducing couplings in socket weld and threaded configurations — manufactured in A105, F304, F316, F11, and F22 for high-pressure and small-bore piping systems.
Full couplings for connecting two pipes of the same size in a straight line. Available in socket weld and threaded configurations per ASME B16.11.
Compliance: ASME B16.11
End Connections: Socket Weld, Threaded
Size Range: ½" to 4"
Half couplings for branching or connecting a smaller pipe to a larger main pipe or vessel. Available in socket weld and threaded configurations.
Compliance: ASME B16.11
End Connections: Socket Weld, Threaded
Size Range: ½" to 4"
Reducing couplings for connecting two pipes of different sizes in a straight line. Available in socket weld and threaded configurations per ASME B16.11.
Compliance: ASME B16.11
End Connections: Socket Weld, Threaded
Size Range: ½" to 4"
Socket weld couplings for high-pressure and small-bore piping. The pipe is inserted into the socket and fillet welded, providing a strong, leak-proof joint.
Compliance: ASME B16.11
Pressure Class: 3000, 6000, 9000
Size Range: ½" to 4"
Threaded couplings for utility piping and where welding is not feasible. Available with NPT or BSP threads per ASME B16.11.
Compliance: ASME B16.11
Thread Types: NPT, BSP, BSPT
Size Range: ½" to 4"
Non-standard sizes, pressure classes, materials, and pipe coupling configurations manufactured according to drawings, piping specifications, and project requirements.
Compliance: ASME B16.11, MSS SP-83
Options: Custom sizes, exotic alloys, coatings
Supply: Based on drawings or specifications
Pipe couplings are supplied in different materials and grades to suit specific pressure, temperature, and media conditions. The material grade determines the mechanical strength, corrosion resistance, and temperature capability of the coupling. We supply pipe couplings in the following materials and grades:
All pipe couplings we supply are accompanied by Material Test Certificates (MTC) confirming the exact grade, mechanical properties, and heat number — ensuring full traceability and compliance with international project specifications.
| Parameter | Specification |
|---|---|
| Coupling Types | Full Couplings, Half Couplings, Reducing Couplings |
| End Connections | Socket Weld (SW), Threaded (NPT/BSP) |
| Materials | Forged Carbon Steel (A105), Forged Stainless Steel (F304, F304L, F316, F316L, F321), Forged Alloy Steel (F11, F22, F91), Forged Low-Temp (LF2), Forged Duplex (F51, F53, F55), Nickel Alloys (Monel, Inconel, Hastelloy) |
| Size Range | ½" to 4" standard (Class 3000, 6000, 9000); larger sizes available on request |
| Pressure Classes | Class 3000, 6000, 9000 per ASME B16.11 |
| Thread Types | NPT, BSP, BSPT, Metric — per ASME B1.20.1 and ISO 7-1 |
| Standards Compliance | ASME B16.11, ASTM A105, ASTM A182, ASTM A350, MSS SP-83, MSS SP-95 |
| Export Documentation | Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, MTC (EN 10204 3.1) |
| Inspection Options | Third-party inspection (SGS, BV, TUV, Intertek) available on request |
| Additional Documentation | Hardness test reports, NACE compliance, H2S service documentation available on request |
Correct pipe coupling selection is critical to ensuring a leak-free piping system and long-term operational safety. The coupling type, material grade, and end connection must be matched to the operating pressure, temperature, and media. Our technical team recommends evaluating four key factors before finalizing a pipe coupling:
If you are unsure which pipe coupling specification best suits your application, our technical team is available to review your piping drawings, process data, and project specifications — and recommend the most suitable pipe coupling solution.
We specialize in pipe coupling supply — offering full couplings, half couplings, and reducing couplings in A105, F304, F316, F11, F22, F91, LF2, and Duplex materials. All couplings are manufactured to ASME B16.11 standards.
We supply pipe couplings in all major types — full, half, and reducing couplings — from ½" to 4" as standard, in Class 3000, 6000, and 9000 pressure ratings, with socket weld and threaded end connections.
Every pipe coupling batch is backed by Material Test Certificates (MTC) and dimensional inspection reports, and can be supplied with NACE compliance documentation, hardness test reports, and third-party certification on request.
Non-standard sizes, pressure classes, materials, thread types, and pipe coupling configurations are manufactured according to drawings, piping specifications, and project requirements — with quick turnaround times.
We supply pipe couplings to clients in the USA, Europe, Africa, Mexico, and Oman — with packaging, documentation, and compliance structured for international procurement.
Our experienced technical team assists with pipe coupling selection, material and pressure class recommendations, and installation guidance. Post-supply support includes documentation follow-up and replacement coordination.
Repsol Steel LLP supplies pipe couplings to a wide range of process industries across USA, Europe, Africa, Mexico, and Oman — where reliable pipe connections are essential.
Pipe couplings supplied for wellhead piping, instrumentation lines, and high-pressure small-bore piping in upstream, midstream, and downstream operations.
Pipe couplings supplied for reactors, heat exchangers, instrumentation lines, and process piping in petrochemical plants.
F11, F22, and F91 pipe couplings supplied for high-temperature and high-pressure small-bore piping in refinery operations.
High-temperature F11, F22, and F91 pipe couplings supplied for boilers, steam systems, turbine connections, and high-pressure auxiliary piping in thermal and nuclear power plants.
F304 and F316 pipe couplings supplied for aggressive chemical and corrosive media applications in chemical plants, storage tanks, and process equipment.
Pipe couplings supplied to fabrication units and EPC contractors for instrumentation lines, small-bore piping, skids, and industrial assemblies.
Repsol Steel LLP is recognized as a reliable industrial pipe coupling supplier for international procurement teams, EPC contractors, and maintenance projects. Our export documentation, packaging, and standard compliance are structured for smooth cross-border supply to buyers in the USA, Europe, Africa, Mexico, and Oman — ensuring your pipe couplings arrive on time, in specification, and ready for installation.
USA: Pipe coupling supply for Oil & Gas, petrochemical & power projects
Europe: Pipe couplings for chemical, refinery & process industries
Africa: Pipe couplings for refinery, petrochemical & power projects
Mexico: Pipe coupling supply for chemical plants & refinery operations
Oman: Pipe couplings for Oil & Gas, petrochemical & power projects
All pipe couplings are supplied with material certificates, dimensional inspection reports, and third-party certification as required by project specifications.
A pipe coupling is a fitting used to connect two pipes or to connect a pipe to equipment. It is a short, cylindrical fitting with either socket weld or threaded ends, used in high-pressure and small-bore piping systems per ASME B16.11.
We supply full couplings, half couplings, and reducing couplings — in socket weld and threaded configurations, various grades, sizes, and pressure classes per project specifications.
We supply pipe couplings in ASTM A105 (carbon steel), ASTM A182 F304, F316, F321 (stainless steel), ASTM A182 F11, F22, F91 (alloy steel), ASTM A350 LF2 (low-temp carbon steel), and duplex grades F51, F53, F55.
We supply pipe couplings primarily to the USA, Europe, Africa, Mexico, and Oman, serving Oil & Gas, petrochemical, refinery, power, and chemical processing projects in these regions.
Yes. We offer custom sizes, pressure classes, materials, thread types, and pipe coupling configurations based on drawings, piping specifications, and project requirements — with quick turnaround times for export orders.
Send us your coupling specifications, grade requirements, or drawings. Our export team will respond within 24 hours with a tailored quotation.
Repsol Steel LLP is a leading manufacturer and stockholder of high-quality piping products, serving the Oil, Gas, Petrochemical, and Nuclear industries with reliable engineering solutions.
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