Repsol Steel LLP is a trusted threaded flange supplier, supplying a comprehensive range of screwed flanges to industrial buyers, EPC contractors, and procurement teams across Africa, USA, Mexico, Oman, and Europe. Threaded flanges have a tapered internal thread (NPT, BSP, or BSPT) that screws onto the pipe — providing a mechanical, weld-free connection that is easy to assemble and disassemble. They are widely used in utility piping, low-pressure service, and where welding is not permitted — including hazardous areas, thin-wall piping, and systems requiring frequent maintenance. We supply threaded flanges in A105 carbon steel, A182 stainless and alloy steel, A350 low-temperature steel, and duplex grades — with full documentation, EN 10204 3.1 certification, and international packaging standards.
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, petrochemical, refinery, power generation, chemical processing, and marine facilities. Our supply operations are structured to meet the documentation, packaging, and compliance requirements of international industrial procurement — including Material Test Certificates (MTC), dimensional inspection reports, thread gauge inspection, NACE compliance, PMI testing, and third-party certification where required.
Whether you require standard A105 threaded flanges for a refinery utility line in Oman, A182 F316 NPT flanges for a petrochemical plant in Mexico, F11/F22/F91 threaded flanges for a high-temperature power plant in Europe, or BSP threaded flanges for a European project — Repsol Steel LLP delivers the right threaded flange solution, on time, with complete export documentation.
A complete threaded flange supply portfolio covering NPT, BSP, BSPT, raised face, flat face, RTJ, and custom screwed flanges — engineered for utility piping, low-pressure, and non-weldable piping systems across Africa, USA, Mexico, Oman, and Europe.
Threaded flanges with NPT (National Pipe Thread) tapered threads — the most common thread type in North American and international industrial piping for utility and low-pressure service.
Grades: A105, A182, A350 LF2
Compliance: ASME B16.5, ASME B1.20.1
Size Range: ½" to 24"
Threaded flanges with BSP (British Standard Pipe) parallel or BSPT tapered threads — widely used in European, Middle East, and Asian projects requiring British Standard threading.
Grades: A105, A182, A350 LF2
Compliance: ASME B16.5, EN 10226, ISO 7-1
Size Range: ½" to 24"
The most common threaded flange face type — with a raised face where the gasket sits above the bolting surface. Used for utility and low-pressure piping in general industrial service.
Grades: A105, A182, A350 LF2
Compliance: ASME B16.5, EN 1092-1
Size Range: ½" to 24"
Flat face threaded flanges with a full gasket surface across the flange face — used in low-pressure applications, cast iron flanges, and where full-face gaskets are required.
Grades: A105, A182, A350 LF2
Compliance: ASME B16.5, EN 1092-1
Size Range: ½" to 24"
Ring Type Joint (RTJ) threaded flanges with a machined groove for a metal ring gasket — providing a metal-to-metal seal for critical threaded service in higher-pressure applications.
Grades: A105, A182 F316, F11, F22
Compliance: ASME B16.5, API 6A
Size Range: ½" to 24"
Custom-manufactured threaded flanges in non-standard sizes, thread types, materials, and face types — including metric threads, left-hand threads, and special bore configurations per drawings.
Grades: A105, A182, A350, Duplex, Exotic
Compliance: ASME B16.5, DIN, Custom Drawings
Size Range: ½" to 24"
Threaded flanges are supplied in different materials and grades to suit specific pressure, temperature, and media conditions across Africa, USA, Mexico, Oman, and Europe. The material grade determines the mechanical strength, corrosion resistance, and temperature capability of the threaded flange. We supply threaded flanges in the following materials and grades:
All threaded flanges we supply are accompanied by Material Test Certificates (MTC to EN 10204 3.1) confirming the exact grade, mechanical properties, and heat number — ensuring full traceability and compliance with international project specifications. Thread gauge inspection and PMI testing are available on request.
| Parameter | Specification |
|---|---|
| Flange Type | Threaded (Screwed), NPT Threaded, BSP/BSPT Threaded, RF Threaded, FF Threaded, RTJ Threaded, Custom Threaded |
| Materials | Carbon Steel (A105), Stainless Steel (F304, F316, F321), Alloy Steel (F11, F22, F91), Low-Temp (LF2), Duplex (F51, F53, F55), Exotic Alloys (Monel, Inconel, Hastelloy) |
| Thread Types | NPT (ASME B1.20.1), BSP/BSPT (ISO 7-1 / EN 10226), Metric Threads, Left-Hand Threads |
| Size Range | ½" to 24" standard; larger sizes available on request |
| Pressure Classes | PN6, PN10, PN16, PN25, PN40 (EN 1092-1); Class 150, 300, 600, 900 (ASME B16.5) |
| Face Types | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
| Standards Compliance | ASME B16.5, ASME B1.20.1, ASTM A105, A182, A350, EN 1092-1, EN 10226, ISO 7-1, DIN, BS |
| Export Documentation | Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, MTC (EN 10204 3.1) |
| Inspection Options | Thread gauge inspection, PMI testing, third-party inspection (SGS, BV, TUV, Intertek) available on request |
| Additional Documentation | Hardness test reports, NACE compliance, H2S service documentation available on request |
Threaded flanges are ideal for utility piping, low-pressure service, and where welding is not permitted or practical. Before finalizing a threaded flange for projects in Africa, USA, Mexico, Oman, or Europe, our technical team recommends evaluating four key factors:
If you are unsure which threaded flange 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 threaded flange solution.
We have supplied threaded flanges to buyers across Africa, the USA, Mexico, Oman, and Europe — building a supply track record that reflects reliability, compliance, and on-time delivery.
Every threaded flange 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), and third-party inspection reports on request.
Our threaded flanges comply with ASME B16.5, ASME B1.20.1, ASTM A105, A182, A350, EN 1092-1, EN 10226, ISO 7-1, DIN, and BS standards — ensuring that products meet the exact specifications of international industrial projects.
Threaded flanges are packed with thread protectors and moisture-resistant export-grade packaging designed for long-distance sea, air, and road transport — protecting the threads and face finish from factory to destination.
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 buyers with grade selection, thread type selection (NPT/BSP), documentation, shipping coordination, and post-delivery follow-up — ensuring a smooth experience at every stage.
Repsol Steel LLP supplies threaded flanges to a wide range of process industries across Africa, USA, Mexico, Oman, and Europe where weld-free, easy-to-assemble, and cost-effective piping connections are essential for utility and low-pressure systems.
A105 and A350 LF2 threaded flanges supplied for utility lines, instrument connections, and low-pressure piping in upstream, midstream, and downstream operations across Africa, USA, Mexico, Oman, and Europe.
A182 F316 and duplex threaded flanges supplied for utility piping, sampling lines, and low-pressure systems in petrochemical plants.
F11, F22, and F91 threaded flanges supplied for high-temperature utility lines and low-pressure process piping in crude distillation, catalytic cracking, and utility systems.
A105 and F11 threaded flanges supplied for cooling water systems, air lines, utility piping, and low-pressure auxiliary lines in thermal and combined-cycle power plants.
A105 threaded flanges supplied for air lines, water lines, steam lines, HVAC systems, and utility piping where quick assembly and disassembly is required.
Threaded flanges supplied for hazardous areas, thin-wall piping, and systems where hot work (welding) is not permitted — including offshore platforms and explosive atmospheres.
Threaded flanges supplied to fabrication units and EPC contractors for piping spools, skids, modular systems, and industrial assemblies — with quick turnaround times and documentation support.
Repsol Steel LLP is recognized as a reliable threaded flange supplier for procurement teams, EPC contractors, and maintenance projects across Africa, the USA, Mexico, Oman, and Europe. Our export documentation, packaging, and standard compliance are structured for smooth cross-border supply to buyers worldwide — ensuring your threaded flanges arrive on time, in specification, and ready for installation.
Africa: Oil & Gas, mining, refinery & industrial piping projects
USA: Oil & Gas, chemical, power generation & EPC supply
Mexico: Refinery, petrochemical & process industry projects
Oman: Oil & Gas, petrochemical, desalination & refinery projects
Europe: Chemical, power, marine & industrial piping supply
All threaded flanges are supplied with material certificates, dimensional inspection reports, thread gauge inspection, PMI testing, and third-party certification as required by project specifications.
Yes. We are a leading threaded flange supplier serving buyers across Africa, the USA, Mexico, Oman, and Europe — offering NPT, BSP, BSPT, RF, FF, RTJ, and custom threaded flanges in A105, A182, A350 LF2, duplex, and exotic alloys.
A threaded flange has a tapered internal thread (NPT, BSP, or BSPT) that screws onto the pipe — providing a weld-free connection. It is widely used in utility piping, low-pressure service, hazardous areas, thin-wall piping, and systems requiring frequent assembly and disassembly.
NPT (National Pipe Thread) is a tapered thread standard per ASME B1.20.1, widely used in North America and international projects. BSP (British Standard Pipe) is per ISO 7-1 / EN 10226, used in Europe, the Middle East, and Asia. BSPT refers to the tapered version of BSP. The thread type must match the pipe or fitting being connected.
We supply threaded flanges 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.
Yes. We offer custom sizes, thread types (NPT, BSP, BSPT, metric, left-hand), pressure classes, materials, face types, and threaded flange configurations based on drawings, piping specifications, and project requirements — with quick turnaround times.
Send us your threaded flange specifications, thread type 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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