Repsol Steel LLP is a trusted supplier of industrial fasteners for pipeline applications, supplying a comprehensive range of bolting and fastening products to pipeline operators, EPC contractors, and procurement teams across Africa, USA, Mexico, Oman, and Europe. Our pipeline fastener range includes stud bolts, hex bolts, hex nuts, flat washers, and spring washers — manufactured in A193 B7, A194 2H, A320 L7 low-temperature grades, SS304, SS316, alloy steel, and exotic alloys in accordance with ASME B18.2.1, ASME B18.2.2, ASTM A193, ASTM A194, and ASTM A320. Every shipment is supplied with full documentation, EN 10204 3.1 certification, and export-grade packaging suited to high-pressure pipeline requirements.
With over 25 years of combined industry experience and a proven export network, we serve clients across Africa, the United States, Mexico, Oman, and Europe — including oil & gas transmission pipelines, gas distribution networks, water pipelines, and petrochemical pipeline systems. Our pipeline fastener supply operations are structured to meet the documentation, packaging, and compliance requirements of international industrial procurement — including Material Test Certificates (MTC), dimensional inspection reports, NACE MR0175 compliance, ASME B18.2.1 compliance, PMI testing, Certificate of Origin, and third-party certification where required.
Whether you require A193 B7 stud bolts for a high-pressure gas pipeline in Oman, A194 2H hex nuts for a water transmission pipeline in Mexico, A320 L7 low-temperature bolting for an LNG pipeline in Europe, SS316 hex bolts for a corrosive pipeline in Africa, or flat washers for a large-scale pipeline project in the USA — Repsol Steel LLP supplies the right pipeline fastener solution, on time, with complete export documentation.
A complete pipeline fastener supply portfolio covering stud bolts, hex bolts, hex nuts, flat washers, and spring washers in A193 B7, A194 2H, A320 L7, SS304, SS316, and alloy steel — engineered for reliable bolting and leak-proof connections in high-pressure and low-temperature pipeline service.
Stud bolts threaded on both ends supplied for pipeline flange connections. Available in A193 B7, B7M, B8, B8M, B16, L7 grades per ASTM A193 and ASTM A320 for low-temperature service.
Grades: A193 B7, B7M, B8, B8M, B16; A320 L7
Compliance: ASTM A193, A320
Size Range: M6 to M48
High-strength hex bolts supplied for pipeline flanged connections and structural pipeline components. Available in A193 B7, B16, B8, B8M, and A320 L7 grades.
Grades: A193 B7, B16, B8, B8M; A320 L7
Compliance: ASME B18.2.1
Size Range: M6 to M100
High-strength hex nuts supplied for use with pipeline stud bolts and hex bolts. Available in A194 2H, 4, 8, 8M grades, and A320 L7 nuts for low-temperature service.
Grades: A194 2H, 4, 8, 8M; A320 L7
Compliance: ASME B18.2.2
Size Range: M6 to M100
A320 L7 low-temperature bolting supplied for pipeline applications in cryogenic and low-temperature service, including LNG pipelines and cold-climate installations.
Grades: A320 L7, L7M, L43
Compliance: ASTM A320, ASME B18.2.1
Size Range: M6 to M100
Flat washers and spring washers supplied for load distribution and vibration resistance in pipeline flanged connections and structural assemblies.
Grades: SS304, SS316, CS, Alloy Steel
Compliance: ASME B18.22.1, DIN 125, DIN 127
Size Range: M3 to M56
Custom-manufactured bolts, stud bolts, nuts, and washers supplied for pipeline applications in non-standard sizes, materials, thread specifications, and coatings per drawings.
Grades: A193 B7, A320 L7, SS316, Duplex
Compliance: ASME B18.2.1, Custom
Size Range: M6 to M100
Industrial fasteners for pipeline applications are supplied in different materials and grades to suit specific pressure, temperature, and media conditions across Africa, USA, Mexico, Oman, and Europe. We supply pipeline fasteners in the following materials and grades:
All pipeline fasteners we supply are accompanied by Material Test Certificates (MTC to EN 10204 3.1/3.2) confirming the exact grade, mechanical properties, and heat number — ensuring full traceability and compliance with international pipeline project specifications. PMI testing is available on request.
| Parameter | Specification |
|---|---|
| Product Types | Stud Bolts, Hex Bolts, Hex Nuts, Flat Washers, Spring Washers, Threaded Rods, Custom |
| Materials | Carbon Steel (A193 B7, A194 2H), Low-Temp (A320 L7, L7M), Stainless Steel (SS304, SS316, A193 B8, B8M, A194 8, 8M), Alloy Steel (A193 B16, F11, F22, F91), Duplex (F51, F53, F55), Exotic Alloys (Monel, Inconel, Hastelloy) |
| Size Range | M6 to M100 standard; larger sizes available on request |
| Service Temperature | A193 B7: up to 450°C; A193 B16: up to 500°C; A320 L7: down to -101°C; SS316: up to 800°C |
| Standards Compliance | ASME B18.2.1, B18.2.2, B18.22.1, ASTM A193, A194, A320, DIN, ISO, NACE MR0175 |
| Coatings Available | Hot-dip galvanized, zinc-plated, PTFE, Xylan, zinc-nickel, fluoropolymer |
| Export Documentation | Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, MTC (EN 10204 3.1) |
| Inspection Options | PMI testing, hardness testing, third-party inspection (SGS, BV, TUV, Intertek) available on request |
| Additional Documentation | NACE MR0175/ISO 15156 compliance, H2S service documentation, impact test reports available on request |
Pipeline fasteners are critical for ensuring leak-proof connections, pressure containment, and safe operations in oil & gas, water, and gas transmission pipelines across Africa, USA, Mexico, Oman, and Europe. Before finalizing pipeline fasteners, our technical team recommends evaluating four key factors:
If you are unsure which pipeline fasteners best suit your application, our technical team is available to review your pipeline drawings, process data, and project specifications — and recommend the most suitable pipeline fastener solution.
We have supplied pipeline fasteners to buyers across Africa, the USA, Mexico, Oman, and Europe — building a supply track record that reflects reliability, compliance, and on-time delivery for oil & gas, water, and gas transmission pipeline projects.
Every pipeline fastener shipment is accompanied by complete export documentation — Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, Material Test Certificates (MTC to EN 10204 3.1/3.2), and third-party inspection reports on request.
Our pipeline fasteners comply with ASME B18.2.1, B18.2.2, B18.22.1, ASTM A193, A194, A320, DIN, ISO, and NACE MR0175 standards — ensuring that products meet the exact specifications of international pipeline and refinery projects.
Pipeline fasteners are packed with rust-preventive coating and moisture-resistant export-grade packaging designed for long-distance sea, air, and road transport to Africa, USA, Mexico, Oman, and Europe.
We support a range of Incoterms — FOB, CIF, CFR, EXW, DAP — and coordinate with trusted freight partners for sea, air, and multimodal shipments to major ports across Africa, USA, Mexico, Oman, and Europe based on buyer preference.
Our support team assists pipeline buyers with fastener selection, material grade selection, coating selection, documentation, shipping coordination, and post-delivery follow-up — ensuring a smooth experience at every stage of pipeline fastener procurement.
Repsol Steel LLP supplies pipeline fasteners to a wide range of pipeline applications across Africa, USA, Mexico, Oman, and Europe where reliable bolting and leak-proof connections are essential for pipeline integrity and operational safety.
A193 B7 stud bolts with A194 2H hex nuts supplied for high-pressure oil & gas transmission pipelines, including onshore and offshore pipeline flanged joints across Africa, USA, Mexico, Oman, and Europe.
High-strength fasteners supplied for gas distribution networks, city gas pipelines, and pressure regulation stations — with hot-dip galvanized coatings for buried pipeline service.
A193 B7 and SS316 fasteners supplied for water transmission pipelines, desalination pipeline systems, and water distribution networks — with corrosion-resistant coatings where required.
A320 L7 low-temperature bolting supplied for LNG pipelines, cryogenic pipeline systems, and cold-climate installations — rated down to -101°C with full impact test documentation.
NACE MR0175 compliant fasteners supplied for sour service pipelines, H2S-containing crude and gas pipelines, and wet sour service applications — with hardness test reports.
Pipeline fasteners supplied in bulk to EPC contractors and pipeline construction companies for pipeline spools, skids, modular systems, and flanged joints — with quick turnaround times and documentation support.
Repsol Steel LLP is recognized as a reliable supplier of industrial fasteners for pipeline applications in Africa, the USA, Mexico, Oman, and Europe. Our export documentation, packaging, and standard compliance are structured for smooth cross-border supply to pipeline buyers worldwide — ensuring your pipeline fasteners arrive on time, in specification, and ready for installation.
Africa: Oil & Gas, water transmission & mining pipeline projects
USA: Oil & Gas, gas distribution, water pipeline & EPC supply
Mexico: Refinery, petrochemical & gas pipeline projects
Oman: Oil & Gas, gas transmission & desalination pipeline projects
Europe: LNG, gas transmission, chemical & power pipeline supply
All pipeline fasteners are supplied with material certificates, dimensional inspection reports, PMI testing, Certificate of Origin, impact test reports, and third-party certification as required by pipeline project specifications.
Yes. We are a leading supplier of industrial fasteners for pipeline applications serving buyers across Africa, the USA, Mexico, Oman, and Europe — supplying A193 B7 stud bolts, A194 2H hex nuts, A320 L7 low-temperature bolting, and stainless steel pipeline fasteners in a wide range of grades and sizes.
A193 B7 is a chromium-molybdenum steel bolt for high-temperature service up to 450°C, widely used in high-pressure oil & gas pipelines. A320 L7 is a similar chromium-molybdenum steel but is specifically impact-tested and certified for low-temperature service down to -101°C, making it suitable for LNG pipelines, cryogenic service, and cold-climate installations.
We offer hot-dip galvanized, zinc-plated, PTFE, Xylan, zinc-nickel, and fluoropolymer coatings for pipeline fasteners. Coating selection depends on the pipeline environment — hot-dip galvanized for buried pipelines, PTFE or Xylan for corrosive environments, and zinc-nickel for offshore pipelines. Please specify your coating requirement at the time of enquiry.
We provide complete export documentation — Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, Material Test Certificates (MTC to EN 10204 3.1/3.2), impact test reports for A320 L7, and NACE MR0175 compliance documentation for sour service. PMI testing and third-party inspection reports (SGS, BV, TUV, Intertek) are available on request.
Yes. We supply pipeline fasteners in bulk quantities for large pipeline projects, EPC contracts, and long-term supply agreements. Custom sizes, materials, coatings, and thread specifications are available based on drawings, pipeline specifications, and project requirements — with quick turnaround times for bulk orders.
Send us your pipeline fastener specifications, material and coating 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.
Repsol Steels LLP Team Is Here to Help
Looking for reliable pipes, fittings, flanges, valves or other industrial piping products? Share your requirement and our team will help you find the right product, material and specification.