Repsol Steel LLP is a trusted industrial bolts supplier for buyers across the USA, Europe, Africa, Mexico, and Oman. We supply a comprehensive range of industrial bolts — including hex bolts, stud bolts, anchor bolts, structural bolts, and custom bolts — in stainless steel, carbon steel, alloy steel, and exotic alloys for Oil & Gas, petrochemical, refinery, power generation, structural, and industrial applications.
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 industrial bolt we supply complies with ASTM A193, ASTM A194, ASTM A320, ASTM A325, ASTM A490, ASME B18.2.1, and ISO 898-1 standards, with full material traceability, mechanical test reports, and documentation that meets the requirements of projects in the USA, Europe, Africa, Mexico, and Oman.
Whether you require standard SS316 hex bolts for a petrochemical plant in Europe, B7 stud bolts for a refinery in the USA, or Grade 8.8 structural bolts for a construction project in Africa or Oman — Repsol Steel LLP delivers the right industrial bolting solution, on time, with complete export documentation.
A complete industrial bolts portfolio covering hex bolts, stud bolts, anchor bolts, structural bolts, and custom bolts — engineered for high-strength bolting across global markets.
Standard hex head bolts for flanged joints, structural connections, and general industrial fastening. Available in stainless steel, carbon steel, and alloy steel.
Compliance: ASME B18.2.1, ASTM A193
Materials: SS304, SS316, B7, B7M, B16
Size Range: ½" to 4"
Double-end stud bolts for flanged joints with through-holes. The standard choice for pipeline flanges, valve bonnets, and high-pressure flanged connections.
Compliance: ASME B18.31.2, ASTM A193
Materials: B7, B7M, B16, SS304, SS316
Size Range: ½" to 4"
High-strength structural bolts for steel-to-steel connections in bridges, buildings, and industrial structures. Available in A325, A490, and F3125 grades.
Compliance: ASTM A325, A490, F3125
Tensile Strength: 120 ksi to 150 ksi
Size Range: ½" to 1½"
Anchor bolts for securing structural steel, machinery, and equipment to concrete foundations. Available in L-bend, J-bend, and straight configurations.
Compliance: ASTM F1554, ASTM A307
Materials: Carbon Steel, SS304, SS316
Size Range: ½" to 4"
High tensile bolts for structural, automotive, and heavy machinery applications. Available in Grade 8.8, 10.9, and 12.9 with superior tensile strength.
Compliance: ISO 898-1, DIN 931, DIN 933
Tensile Strength: 800 MPa to 1200 MPa
Size Range: M6 to M100
Non-standard sizes, materials, and bolt configurations supplied to your drawings and project specifications — including specialty head types and coatings.
Options: Custom sizes, exotic alloys, coatings
Supply: Based on drawings or equipment specifications
Industrial bolts are supplied in different materials and grades to suit specific pressure, temperature, and application requirements. The material grade determines the mechanical strength, corrosion resistance, and temperature capability of the bolt. We supply industrial bolts in the following materials and grades:
All industrial bolts 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 |
|---|---|
| Bolt Types | Hex Bolts, Stud Bolts, Anchor Bolts, Structural Bolts, High Tensile Bolts, Custom Bolts |
| Materials | Stainless Steel (SS304, SS316, SS321), Carbon Steel, Alloy Steel (B7, B7M, B16), High Tensile (8.8, 10.9, 12.9), Exotic Alloys (Monel, Inconel, Hastelloy, Duplex) |
| Bolt Grades | ASTM A193 B7, B7M, B16; ASTM A320 L7, L7M; ASTM A325, A490, F3125; ISO 898-1 Grade 8.8, 10.9, 12.9; SS304, SS316, SS321 |
| Size Range (Imperial) | ¼" to 4" standard; larger sizes available on request |
| Size Range (Metric) | M6 to M100 standard; larger sizes available on request |
| Length Range | Custom lengths available per project specifications |
| Thread Types | UNC, UNF, BSW, Metric (M) — per ASME B1.1 and ISO 261 |
| Coatings | Plain, Zinc Plated, Hot-Dip Galvanized, Xylan, PTFE, Cadmium, Dacromet, Geomet |
| Standards Compliance | ASTM A193, A194, A320, A325, A490, F3125, F1554; ASME B18.2.1, B18.31.2; ISO 898-1; DIN 931, 933, 912 |
| 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 industrial bolt selection is critical to ensuring a leak-free flanged joint, reliable structural connection, and long-term operational safety. The bolt type, grade, material, and coating must be matched to the operating pressure, temperature, and application. Our technical team recommends evaluating four key factors before finalizing an industrial bolt:
If you are unsure which industrial bolt specification best suits your application, our technical team is available to review your flange drawings, structural requirements, and project specifications — and recommend the most suitable bolting solution.
We specialize in industrial bolt supply — offering hex bolts, stud bolts, anchor bolts, structural bolts, high tensile bolts, and custom bolts in stainless steel, carbon steel, alloy steel, and exotic alloys.
We supply industrial bolts in all major types — hex, stud, anchor, structural, and high tensile — in ASTM, ISO, and DIN grades, from ¼" to 4" (M6 to M100) as standard, with larger sizes on request.
Every industrial bolt batch is backed by Material Test Certificates (MTC) and mechanical test reports, and can be supplied with dimensional inspection reports and third-party certification on request.
Non-standard sizes, materials, coatings, and bolt configurations are manufactured according to drawings, equipment specifications, and project requirements — with quick turnaround times.
We supply industrial bolts 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 industrial bolt selection, grade recommendations, and installation guidance. Post-supply support includes documentation follow-up and replacement coordination.
Repsol Steel LLP supplies industrial bolts to a wide range of process industries across USA, Europe, Africa, Mexico, and Oman — where reliable bolting performance is essential for safety and operational reliability.
Industrial bolts supplied for wellhead equipment, Christmas trees, pipeline flanges, and high-pressure process piping in upstream, midstream, and downstream operations.
Bolting solutions supplied for reactors, heat exchangers, process piping, and storage systems handling hydrocarbons at high pressures and temperatures.
High-strength structural bolts supplied for steel-to-steel connections in bridges, buildings, industrial structures, and infrastructure projects.
High-temperature bolts supplied for boilers, steam systems, turbine connections, and high-pressure auxiliary piping in thermal and nuclear power plants.
SS316 and exotic alloy bolts supplied for aggressive chemical and corrosive media applications in reactors, storage tanks, and process equipment.
Industrial bolts supplied to fabrication units and EPC contractors for piping spools, skids, modular structures, and industrial assemblies.
Repsol Steel LLP is recognized as a reliable industrial bolts 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 industrial bolts arrive on time, in specification, and ready for installation.
USA: Industrial bolt supply for Oil & Gas, petrochemical & structural projects
Europe: Industrial bolts for construction, refinery & process industries
Africa: Industrial bolts for infrastructure, refinery & power projects
Mexico: Industrial bolt supply for chemical plants, refinery & automotive projects
Oman: Industrial bolts for Oil & Gas, construction & power projects
All industrial bolts are supplied with material certificates, mechanical test reports, and third-party certification as required by project specifications.
We supply hex bolts, stud bolts, anchor bolts, structural bolts, high tensile bolts, and custom industrial bolts in stainless steel, carbon steel, alloy steel, and exotic alloys — for flanged joints, structural connections, and industrial applications.
We supply bolts in ASTM A193 B7, B7M, B16; ASTM A194 2H, 2HM; ASTM A320 L7, L7M; ASTM A325, A490, F3125; ISO 898-1 Grade 8.8, 10.9, 12.9; and SS304, SS316, SS321 grades. Exotic alloys including Monel, Inconel, Hastelloy, and Duplex are also available.
We supply industrial bolts with Plain, Zinc Plated, Hot-Dip Galvanized, Xylan, PTFE, Cadmium, Dacromet, and Geomet coatings — selected based on atmospheric conditions, temperature, and application requirements.
We supply industrial bolts primarily to the USA, Europe, Africa, Mexico, and Oman, serving Oil & Gas, petrochemical, structural, power, subsea, and chemical processing projects in these regions.
Yes. We offer custom sizes, lengths, materials, coatings, and industrial bolt configurations based on drawings, equipment specifications, and project requirements — with quick turnaround times for export orders.
Send us your bolt 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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