Most of what moves through Kuwait's oilfields is seamless by requirement, so our stainless steel seamless pipes and carbon steel pipes & tubes form the core of what we ship into these projects, with duplex steel pipes and super duplex steel tubes available for sour or corrosive-service lines where a standard grade won't hold up. If your specification calls for welded construction instead, it's worth reading our note on seamless vs. welded stainless steel pipe before you finalise the RFQ.Kuwait Oil Company doesn't leave tubing sourcing to chance its projects run on materials from vendors already cleared against KOC's own approved list, backed by documentation that holds up under audit.
All tubes manufactured and exported by Metinox Overseas are KOC approved and come from seamless stainless steel, duplex, super duplex, carbon steel and alloy steel tubing that have been produced to API 5CT, API 5L, ASTM and ASME specifications with mill test certificate EN 10204 3.1/3.2 with PMI and/or hydrostatic test certificates available upon request. The seamless tubing, casing grade material and process tube we supply is backed by three generations of metallurgical know-how and an ISO 9001 certified quality system, which is why it is trusted by EPC contractors and procurement teams on the upstream and downstream projects in Kuwait's oil and gas industry. No matter the grade or size, we tailor wall thickness, cut length and end finish to your drawing and coordinate third party inspection if required by a project; we deliver from ready stock in our Mumbai, Kalamboli and Taloja warehouses. Every tube leaves our facility documented to pass the review before it ever reaches a Kuwaiti job site.
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Table of content
What Does “KOC Approved” Actually Mean?
This is the section worth reading slowly if you've never sourced into a KOC project before — and it's the one thing the competitor page above never actually explains.
- Definition: a KOC approved supplier is one whose manufacturing facility, quality system, and material traceability have been reviewed and cleared against Kuwait Oil Company's own vendor and material requisition (MR) standards — not a generic industry certificate, but sign-off tied specifically to KOC's engineering requirements.
- Why it matters: contracts and tenders tied to KOC projects routinely name approved or KOC-compliant manufacturers as the only acceptable material source, which shifts real risk and liability onto whoever supplies the tube if that approval chain isn't documented properly.
- How Metinox supplies to this standard: mill-traceable raw material, production controlled to the API 5CT/5L and ASTM/ASME specifications KOC's MR documents reference, a full paperwork 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 built into the order.
Technical Specifications
| Parameter | Specification |
|---|---|
Outer Diameter (OD) | 1/8″ to 20″ depending on product form (tube: up to 4″; casing/line pipe: larger sizes on request) |
Wall Thickness | 0.5 mm – 20 mm (custom on request) |
Form | Seamless (primary) & Welded (ERW) on request |
Length | Single random, double random, or cut-to-length |
Finish | Bright annealed, pickled & passivated, mill finish |
End Finish | Plain end, beveled end, threaded (API connections available) |
Pressure Rating | Up to 20,000 PSI depending on grade & schedule |
Applicable Standards | API 5CT, API 5L, ASTM A106 / A312 / A213 / A269, ASME SA106/SA312, DIN 2462 |
Testing | Hydrostatic, PMI, IGC, eddy current, ultrasonic (on request) |
Certification | EN 10204 Type 3.1 / 3.2 Mill Test Certificate |
Packing | Wooden crates / bundles with anti-corrosion VCI wrap and end caps |
Applications & Industries
- Upstream oil field tubulars — casing, tubing, and well completions (see our oil & gas pipes and tubes page)
- Gathering lines and flowlines across production fields
- Refinery and gas-processing piping (petrochemical pipes and tubes)
- Instrumentation and control panel tubing
- Heat exchangers and process cooling systems
- Water injection and enhanced oil recovery lines
- Marine terminal and export pipeline infrastructure (marine & offshore pipes)
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 tube/pipe manufacturing under controlled process parameters, with welded options where specified.
- 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 KOC MR requirements.
- Packing & Dispatch — anti-corrosion wrapping, wooden crating, and full export documentation for Kuwait-bound freight.
Certifications & Standards
- ISO 9001:2015 Quality Management Certification
- Manufactured to API 5CT, API 5L, ASTM, ASME, DIN specifications referenced in KOC material requisitions
- 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
FAQs
A KOC approved tube is tubing supplied by a manufacturer whose facility, quality system, and material traceability have been reviewed and cleared against Kuwait Oil Company's vendor and material requisition standards, making it acceptable for use on KOC and Group projects.
Most KOC material requisitions for casing, tubing, and line pipe call for seamless construction under API 5CT or API 5L. We manufacture seamless as our standard offering, with welded (ERW) available where a specification permits it.
We supply carbon steel grades under API 5CT/5L, stainless steel 304/304L, 316/316L, 321, duplex 2205, super duplex 2507, and alloy steel P5–P91, 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.
Yes. OD, wall thickness, cut length, and end finish — including plain, beveled, or threaded ends — can be customised to your project drawing.
Ready stock at our Mumbai, Kalamboli, and Taloja warehouses supports faster dispatch on standard sizes, while custom or larger-diameter orders are quoted with a production timeline at the time of enquiry.
Share your required grade, size, standard, and quantity through our quote form, email, or WhatsApp, and our technical team will respond with pricing, availability, and the relevant datasheet.
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