Oman Gas Transmission Line Pipe (LSAW / SSAW)
Heavy-duty longitudinal and spiral submerged arc-welded line pipes designed for PDO and OQGN high-pressure natural gas grids, sour gas service, and desert trunk lines.
View SpecificationsPre-inspected carbon steel and polymer pipeline systems engineered to withstand hyper-saline desert soil, sour gas chemistry, and coastal industrial environments across Sohar, Duqm, and Salalah.
Heavy-duty longitudinal and spiral submerged arc-welded line pipes designed for PDO and OQGN high-pressure natural gas grids, sour gas service, and desert trunk lines.
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Designed for downstream petrochemical processing at Sohar and Duqm refineries, offering high mechanical hoop strength and internal flow epoxy coating.
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Engineered for high-volume saline water delivery connecting coastal desalination complexes with inland reservoirs and oilfield reinjection plants.
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Chemical-proof, abrasion-resistant pipeline infrastructure engineered for industrial runoff, hydrocarbon effluent treatment, and municipal storm lines in Oman.
View SpecificationsThe Sultanate of Oman represents one of the Middle East's most technologically rigorous pipeline corridors. Driven by the strategic roadmap of Oman Vision 2040, state operators including OQ Gas Networks (OQGN) and Petroleum Development Oman (PDO) are deploying thousands of kilometers of advanced transmission pipelines to support multi-billion-dollar initiatives across Duqm SEZ, Sohar Port & Freezone, and the Khazzan-Makarem sour gas reserves.
Duqm has transformed into an international industrial anchor. Gas transmission pipelines connecting central fields to the Duqm Refinery (OQ8), petrochemical complexes, and export bunkering terminals require thick-walled, heavy-gauge API 5L line pipes capable of continuous operating pressures above 90 bar (9.0 MPa).
Oman's upstream reserves feature ultra-tight reservoirs and sour gas conditions characterized by elevated concentrations of H₂S and CO₂. Steel line pipes deployed across Block 61 and Block 10 must strictly conform to NACE MR0175 / ISO 15156 standards to completely eradicate catastrophic sulfide stress cracking.
As Oman accelerates green hydrogen development in Dhofar and Al Wusta, EPC contractors demand ODM line pipes that are "hydrogen-ready." This requires strictly controlled low-carbon, micro-alloyed thermomechanical rolled coils (TMCP) to eliminate hydrogen embrittlement during future 10–20% gas-grid blending.
Below is an indicative engineering price schedule for API 5L PSL2 line pipes, manufactured to order at our Tianjin and Tangshan rolling mills, fully bundled and pre-coated with 3-Layer Polyethylene (3LPE) for direct offloading at Port Sultan Qaboos, Port of Sohar, or Duqm Port.
| Nominal Size (NPS) | Outside Diameter (OD) | Wall Thickness (WT) | Steel Grade / Spec | External Coating | Indicative Price (FOB Tianjin) | CIF Sohar / Duqm (Est.) |
|---|---|---|---|---|---|---|
| 6" NPS | 168.3 mm | 7.11 mm (SCH 40) | API 5L PSL2 X52M / Q355B | 3LPE / FBE (DIN 30670) | $720 – $790 / Ton | $795 – $865 / Ton |
| 8" NPS | 219.1 mm | 8.18 mm (SCH 40) | API 5L PSL2 X52M / X60M | 3LPE 3.0mm Class v | $710 – $780 / Ton | $785 – $855 / Ton |
| 12" NPS | 323.9 mm | 9.53 mm (STD) | API 5L PSL2 X65M (Sour Service) | 3LPE / 3LPP Heavy Duty | $740 – $815 / Ton | $815 – $895 / Ton |
| 16" NPS | 406.4 mm | 12.70 mm (SCH 40) | API 5L PSL2 X65M / X70M | Dual-Layer FBE + Rough Coat | $755 – $830 / Ton | $830 – $910 / Ton |
| 24" NPS | 610.0 mm | 14.27 mm (LSAW) | API 5L PSL2 X70M (NACE MR0175) | 3LPE + Concrete Weight Coat | $770 – $845 / Ton | $850 – $930 / Ton |
| 36" NPS | 914.4 mm | 19.05 mm (LSAW/SSAW) | API 5L PSL2 X70M / SP-1211 | 3LPE High Temp 80°C Rated | $785 – $860 / Ton | $870 – $950 / Ton |
| 48" NPS | 1219.2 mm | 22.22 mm (Trunkline) | API 5L PSL2 X70M / X80M | 3LPE (ISO 21809-1) | $810 – $890 / Ton | $895 – $980 / Ton |
*Indicative quotations subject to raw material carbon steel index fluctuations, custom bevel angles, NDT sampling rates, and sea-freight bunker surcharges. Official bids validated in 48 hours with project-specific BOM.
Operating gas transmission infrastructure in Oman demands continuous mitigation against aggressive desert soil chlorides, ground temperature spikes up to 60°C, and sour hydrocarbon chemistry.
To eliminate Hydrogen Induced Cracking (HIC) and Sulfide Stress Corrosion Cracking (SSCC), our steel melting employs vacuum degassing, calcium treatment for spherical sulfide morphology control, and ultra-low sulfur content (S ≤ 0.0015%), strictly passing NACE TM0284 and TM0177 immersion testing.
Desert transmission lines face intense soil stress, fluctuating thermal expansion, and hyper-saline ground water. We apply automated 3-Layer Polyethylene (3LPE) and 3-Layer Polypropylene (3LPP) coatings (complying with DIN 30670 and ISO 21809-1), providing an impermeable barrier capable of withstanding operating temperatures up to 110°C.
Fast automatic field orbital welding demands stringent out-of-roundness control (±0.5%) and laser-inspected bevel preparation. Our lines guarantee precision end preparation (30° ± 2.5° with 1.6 mm root face), minimizing fit-up time across challenging open desert pipeline spreads.
Executing pipeline transmission packages within Oman requires uncompromised adherence to operator-specific engineering practices. Tianjin Huizhong Xinyu delivers complete qualification files and vendor support aligned with international energy requirements:
Our API 5L line pipes are rolled to meet the stringent mechanical fracture toughness criteria of PDO SP-1211 (Line Pipe Specifications) and PDO SP-2047 (External Coating Requirements). Charpy V-Notch (CVN) impact toughness is systematically tested at -20°C and 0°C across the base metal, weld metal, and Heat-Affected Zone (HAZ), guaranteeing minimum shear area values of ≥ 85% to arrest brittle propagation.
Every shipment is delivered with comprehensive EN 10204 Type 3.2 Mill Test Certificates endorsed by globally recognized third-party inspection authorities, including SGS, Bureau Veritas (BV), DNV, or TÜV Rheinland. Inspection scopes encompass 100% full-body ultrasonic testing (AUT), real-time fluoroscopic X-ray weld seam inspection, hydrostatic proof tests held for ≥10 seconds at 95% SMYS, and rigorous coating cathodic disbondment verification.
Cross-validation of client Data Sheets, Wall-Thickness calculations (ASME B31.8), and Design Factor (F=0.72 / 0.60).
Precision thermo-mechanical rolling with controlled low carbon-equivalent (CEq ≤ 0.42, Pcm ≤ 0.19) for field weldability.
Application of tri-layer PE/PP, automated end-beveling with heavy plastic end-caps and bevel protectors for ocean transit.
Chartered break-bulk vessels or 40ft High-Cube container logistics with discharge at Sohar, Salalah, or Duqm ports.
Critical answers for EPC procurement managers, QA/QC engineers, and pipeline construction directors evaluating ODM gas transmission pipes.
Contact our technical engineering and pricing desk today for comprehensive Mill Test Certificates, tolerance datasheets, and CIF Sohar / CIF Duqm commercial quotations tailored to your exact bill of materials.
Streamline site procurement by combining your mainline piping orders with heavy structural profiles, raw coils, reinforcement steel, and municipal plastic conduits from our massive 1,500-acre manufacturing bases.
High-strength wide-flange beams engineered for oilfield pipe racks, refinery superstructure frameworks, and heavy platform support beams.
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Hot-rolled structural section profiles supplied in full mill-lengths or cut and punched to EPC engineering blueprints ready for assembly.
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Premium hot-rolled and cold-rolled strip and coil feedstock formulated for spiral pipe mills, mechanical roll-forming, and industrial ductwork.
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Reinforcing ribbed concrete rebar and wire rod for heavy industrial foundations, compressor stations, and marine port caissons.
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Corrosion-protected grounding and earthing flat steel bars designed for desert electrical sub-stations, pipeline cathodic bonding, and structural brackets.
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Trunnion-mounted ball valves, high-pressure gate valves, and check valves matched directly to our pipe dimensions for seamless field installation.
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Rigid metal conduits offering mechanical impact protection and electromagnetic shielding for instrumentation wiring throughout petrochemical yards.
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Silicon-core HDPE communication ducts for housing fiber optic monitoring cables running parallel to high-pressure gas pipelines across Oman.
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