Line pipe and process piping into Oman is predominantly carbon steel, so that's the core of what we supply here, alongside stainless steel seamless pipes for corrosive or high-purity service and duplex steel pipes where sour service or higher chloride content rules out a standard grade. If your scope also covers fittings, our pipe fittings range is manufactured to the same documentation standard, we've kept that as a separate page rather than folding it into this one, so each stays focused on what it's actually being searched for.
Petroleum Development Oman runs the country's largest share of oil and gas production, and its material sourcing reflects that scale; pipe has to come from a vendor already recognised on PDO's approved supplier list, backed by paperwork that holds up against PDO's own engineering specifications. Metinox Overseas manufactures and exports PDO approved pipe built for exactly that standard: seamless and welded carbon steel, stainless steel, and duplex pipe produced to API 5L, ASTM, and ASME specifications, with EN 10204 3.1/3.2 mill test certificates and PMI or hydrostatic testing issued on request.
This ISO 9001 certified quality system, coupled with three generations of metallurgical experience, gives us the trust of EPC contractors and procurement teams for the line pipe, process pipe and structural pipe we supply for the upstream and downstream projects in Oman, including buyers looking for In-Country Value (ICV) compliance through their supply chain. We tailor the wall thickness to your drawing, customize the length of the wall and prepare the end to your requirement, conduct third party inspection as mentioned in the contract and dispatch from ready stock at our Mumbai, Kalamboli and Taloja warehouses. All lengths shipped are checked and recorded for review prior to delivery at an Omani location.
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Table of content
What Does “PDO Approved” Actually Mean?
Worth reading properly if you haven't sourced into an Omani oil and gas project before — and the one thing every competitor page in this space skips.
- Definition: a PDO approved supplier is one whose manufacturing facility, quality system, and material traceability have been reviewed and registered against Petroleum Development Oman's own vendor and specification (PR-series) requirements, rather than a generic industry certificate.
- Why it matters: PDO contracts and tenders typically restrict material sourcing to approved vendors, and many also carry In-Country Value (ICV) requirements under Oman's national ICV programme — so the supply chain behind the pipe matters as much as the pipe itself.
- How Metinox supplies to this standard: mill-traceable raw material, production controlled to the API 5L and ASTM/ASME specifications PDO's PR documents reference, a complete documentation package (MTC, PMI report, hydro test certificate, dimensional report) with every shipment, and third-party inspection coordination — SGS, Bureau Veritas, TUV, Lloyd's — arranged on request for buyers who need it written into the order.
Grades & Standards Cross-Reference
| Material Family | Common Grades | Reference Standards |
|---|---|---|
Carbon Steel (Line Pipe) | API 5L Gr.B, X42–X65; ASTM A106 Gr.B, A53 Gr.B | API 5L, ASTM A106/A53, ASME SA106 |
Austenitic Stainless Steel | 304, 304L, 316, 316L, 321 | ASTM A312, ASME SA312 |
Duplex & Super Duplex | 2205 (S31803/S32205), 2507 (S32750) | ASTM A790, ASME SA790 |
Alloy Steel | P5, P9, P11, P22, P91 | ASTM A335, ASME SA335 |
Manufacturing & Quality Assurance Process
- Raw Material Sourcing — certified mills across India, Europe, Japan, Korea & China with verifiable Mill Test Certificates.
- Incoming Material Inspection — chemical composition (PMI) and dimensional verification before production begins.
- Production — seamless and welded pipe manufacturing under controlled process parameters.
- In-Process & Final Testing — hydrostatic test, eddy current/ultrasonic testing, IGC test where applicable to the grade.
- Documentation — EN 10204 3.1/3.2 MTC, dimensional report, and test certificates compiled per shipment, mapped to PDO specification requirements.
- Packing & Dispatch — anti-corrosion wrapping, wooden crating, and full export documentation for Oman-bound freight.
Certifications & Standards
- ISO 9001:2015 Quality Management Certification
- Manufactured to API 5L, ASTM, ASME, DIN specifications referenced in PDO's PR specifications
- EN 10204 Type 3.1 / 3.2 Mill Test Certificates
- Third-party inspection coordination — SGS, Bureau Veritas, TUV, Lloyd's Register
- Full heat and batch traceability documentation on every order
Applications & Industries
- Onshore and offshore field gathering lines (see our oil & gas pipes and tubes page)
- Crude and gas transmission line pipe
- Refinery and gas-processing piping (petrochemical pipes and tubes)
- Water injection and enhanced oil recovery systems
- Structural and utility piping at process facilities
- Desalination and power plant piping (chemical processing pipes)
FAQs About PDO Approved Pipe Manufacturer
A PDO approved pipe is pipe supplied by a manufacturer whose facility, quality system, and material traceability have been reviewed and registered against Petroleum Development Oman's vendor and specification requirements, making it acceptable for use on PDO and joint-venture projects.
PDO stands for Petroleum Development Oman, the country's principal oil and gas exploration and production operator.
We supply carbon steel line pipe under API 5L and ASTM A106/A53, stainless steel 304/304L, 316/316L, 321, and duplex 2205/super duplex 2507, manufactured to ASTM, ASME, and API standards.
Every order ships with an EN 10204 Type 3.1 or 3.2 mill test certificate, dimensional inspection report, and hydrostatic/PMI test reports where applicable. Third-party inspection (SGS, Bureau Veritas, TUV, Lloyd's) can be arranged on request.
This page covers pipe specifically. We also manufacture and supply matching pipe fittings to the same documentation standard — see our pipe fittings range for elbows, tees, and couplings.
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