API 5L Seamless Steel Pipes & Line Pipes for Nigeria Oil & Gas Projects
Leading China manufacturer supplying heavy-duty API 5L PSL1 / PSL2 (Gr. B, X42 to X70) seamless line pipes, ASTM A106 Gr. B high-pressure pipes, and 3LPE anti-corrosion coated steel pipes for pipeline construction, refinery maintenance, and offshore flowlines across Lagos (Apapa/Tin Can), Port Harcourt (Onne Port), and Warri.
1. Oil & Gas Steel Pipe Supply Overview for Nigeria (NNPC & EPC Standards)
Nigeriau2019s oil and gas sectoru2014centered around the prolific Niger Delta basin, offshore deepwater blocks, and downstream refinery networks (including Dangote Refinery, Port Harcourt Refinery, and Warri Refinery)u2014demands steel line pipes that can withstand extreme tropical humidity, highly corrosive swamp soil, high operating pressures, and sour hydrocarbon streams.
Sino East Steel is a certified steel pipe manufacturer with over 18 years of manufacturing and global export experience. We supply full-range carbon steel line pipes strictly adhering to API Spec 5L (46th Edition), ASTM A106 / A53, and API 5CT, designed to meet the rigorous vendor lists of major operators (NNPC, Shell SPDC, TotalEnergies, Chevron Nigeria, Agip/Eni) and leading EPC engineering contractors.
2. Technical Specification & Manufacturing Range
| Parameter | Seamless (SMLS) Line Pipe | Welded Line Pipe (ERW / LSAW / SSAW) |
|---|---|---|
| Manufacturing Standards | API 5L (PSL1 & PSL2), ASTM A106 Gr. B/C, ASTM A53, ASME B36.10M | API 5L (PSL1 & PSL2), ASTM A53, EN 10219, AWWA C200 |
| Steel Grades (API 5L) | Grade B, X42, X46, X52, X56, X60, X65, X70 (PSL1 & PSL2) | Grade B, X42, X52, X60, X65, X70, X80 (PSL1 & PSL2) |
| Outer Diameter (OD) | 1/2″ to 24″ (21.3 mm to 610.0 mm) | ERW: 1/2″ to 24″ | LSAW: 16″ to 56″ | SSAW: 8″ to 120″ |
| Wall Thickness (WT) | SCH 10 through SCH 160 & SCH XXS (2.77 mm to 59.54 mm) | SCH STD, SCH 40, SCH 80, SCH XS, up to 50.0 mm |
| Pipe Length | SRL (5.8m / 6.0m), DRL (11.8m / 12.0m), Custom Fixed Length up to 14m | DRL (11.8m / 12.0m / 12.2m), Custom Length up to 18m |
| End Finishes | Plain End (PE), Beveled End (BE 30u00b0 / 35u00b0 with root face), Threaded & Coupled (T&C), Grooved, with heavy-duty metal or composite end protectors | |
| Anti-Corrosion Coatings | 3LPE (DIN 30670 / ISO 21809-1), 3LPP, Single/Dual Layer FBE, Coal Tar Epoxy, Liquid Epoxy Internal Flow Lining (API RP 5L2), Black Varnish / Anti-Rust Oil | |
3. API 5L PSL1 vs. PSL2 & NACE MR0175 Sour Service Capabilities
For upstream gathering lines and swamp crossings in Delta State, Rivers State, and Bayelsa State, oil and gas media frequently contain wet hydrogen sulfide (H2S) and carbon dioxide (CO2). Sino East Steel provides specialized API 5L PSL2 Sour Service Grade Pipes:
API 5L PSL2 Critical Enhancements
- Charpy V-Notch (CVN) Impact Test: Tested at 0u00b0C, -20u00b0C, or -40u00b0C with minimum full-size absorbed energy u2265 40 J (average) and u2265 30 J (individual).
- Carbon Equivalent (CEV & Pcm): Restricted chemistry (CEV u2264 0.42 / Pcm u2264 0.22) ensures exceptional weldability in field tie-in operations.
- Strict Yield/Tensile Ratio: Guaranteed Yield-to-Tensile ratio u2264 0.93 to prevent catastrophic ductile fracture under surge pressures.
NACE MR0175 / ISO 15156 Compliance
- HIC (Hydrogen-Induced Cracking): Certified per NACE TM0284 with CLR u2264 15%, CTR u2264 5%, and CSR u2264 2%.
- SSCC (Sulfide Stress Corrosion Cracking): Tested per NACE TM0177 Method A with no cracking at 80% SMYS.
- Hardness Control: Maximum weld and base metal hardness limited to 22 HRC (248 HV10) for maximum sour gas longevity.
4. 3LPE & 3LPP Anti-Corrosion Coating for Niger Delta Swamp Crossings
Buried and marshland pipelines in Nigeria face severe soil microbial corrosion and high soil resistivity. Our 3-Layer Polyethylene (3LPE) coating system conforms to DIN 30670, ISO 21809-1, and CAN/CSA-Z245.21:
* 3LPP (3-Layer Polypropylene) available for operating temperatures up to +110u00b0C. Internal epoxy flow efficiency lining per API RP 5L2 reduces gas pipeline drag coefficient and boosts transmission throughput by up to 15%.
5. Nigeria Port Logistics, SONCAP / Form M Clearance & 21 Days Free Time
ud83dudea2 Direct Port Destinations
We offer competitive CIF & CFR freight terms to all Nigerian key ports:
- Onne Port (Port Harcourt): Dedicated terminal for Oil & Gas Free Zone (OGFZ), Trans-Amadi, and Eastern oilfields.
- Lagos Ports (Apapa & Tin Can Island): Ideal for downstream distributors, fabricators, and Western hub projects.
- Warri & Calabar Ports: Specialized breakbulk and project cargo handling.
ud83dudcd1 100% SONCAP & Form M Support
We eliminate clearance delays at Nigerian Customs through complete document preparation:
- Product Certificate (PC): Fast issuance under Route A, B, or C via accredited testing agencies (SGS, CCIC, Cotecna).
- SONCAP Certificate (SC): Final SC issued per shipment for seamless PAAR (Pre-Arrival Assessment Report) generation.
- Central Bank of Nigeria (CBN) Compliance: Proforma invoices fully compatible with Form M e-portal filing.
u23f1ufe0f 14u201321 Days Demurrage Relief
Port congestion in Lagos and Onne often triggers heavy demurrage penalties. In partnership with major shipping lines (Maersk, CMA CGM, COSCO), we negotiate and provide 14 to 21 days of container demurrage free time directly endorsed on the Bill of Lading (B/L), saving our clients thousands of dollars in port holding charges.
ud83dudce6 Heavy-Duty Export Bundling
Pipes OD u2264 8″ are packed in tight hexagonal bundles strapped with high-tensile steel bands and heavy lifting slings. Large diameter pipes (OD > 8″) are loaded loose with bevel end caps, internal rubber spacers, and custom timber dunnage in 20GP/40HQ containers or breakbulk holds to ensure 100% zero bevel damage upon arrival.
6. Factory Quality Control, In-Line NDT & Mill Test Certificates
Every single length of API 5L steel pipe undergoes 100% rigorous non-destructive and destructive testing prior to dispatch:
7. Target Applications across Nigeriau2019s Energy Infrastructure
- Upstream Crude Oil & Gas Gathering: Flowlines, trunklines, and manifold interconnections across onshore and shallow offshore concessions.
- Gas Transmission & Distribution Pipelines: High-pressure natural gas trunklines connecting domestic gas processing hubs to industrial zones.
- Refinery, Petrochemical & Tank Farm Piping: Process piping for crude distillation units, storage terminals, and marine offloading jetties in Lekki Free Zone and Apapa.
- OCTG Drilling & Well Services: Heavy-wall surface casing, production tubing, and slotted liners conforming to API 5CT (J55, K55, N80, L80, P110).
- Structural Steel Tubular Piles: Heavy-wall tubular foundation piles for offshore jacket platforms, bridges, and harbor quays in Lagos and Onne.
Frequently Asked Questions (FAQ) – API 5L Line Pipe Supply to Nigeria
Q1: What is the transit time from China to Lagos (Apapa/Tin Can) or Port Harcourt (Onne Port)?
Ocean transit time from major China ports (Tianjin Xingang, Qingdao, Shanghai) to Apapa or Onne Port typically takes between 35 and 45 days. We arrange optimal direct vessel routings to minimize transshipment delays.
Q2: Can Sino East Steel assist with SONCAP Certificate and Form M processing?
Yes. We work directly with accredited inspection agencies (SGS, CCIC, Cotecna) to issue the Product Certificate (PC) and shipment-specific SONCAP Certificate (SC). Our Proforma Invoices (PI) contain all requisite HS codes and technical specifications required by Nigerian commercial banks for Form M approval.
Q3: How do you guarantee the quality and sour service resistance of API 5L PSL2 pipes?
Each heat of steel is melted using vacuum degassing and ladle refining to achieve ultra-low sulfur (S u2264 0.002%) and phosphorus. Pipes undergo 100% full-body automated ultrasonic inspection (UT), hydrostatic pressure testing at 100% SMYS, and Charpy V-Notch impact testing. Sour service pipes are batch-tested for HIC (NACE TM0284) and SSCC (NACE TM0177) with detailed test reports attached to the EN 10204 3.1 Mill Test Certificate.
Q4: What is the Minimum Order Quantity (MOQ) for API 5L seamless pipes?
For standard stock sizes (e.g., 2″ to 12″ SCH 40 / SCH 80 Grade B/X52), the MOQ is 1x20GP container (approx. 20u201325 tons). For custom manufacturing orders (e.g., heavy wall SCH 160/XXS, high-grade X65/X70, or 3LPE coated pipes), the MOQ is typically 15 to 20 metric tons per specification.
Q5: Can you provide 3LPE coating and internal flow lining together on the same pipe order?
Yes. Our coating facilities apply external 3LPE / 3LPP anti-corrosion coating (DIN 30670) and internal liquid epoxy coating (API RP 5L2 / AWWA C210) in a single integrated workflow, delivering dual-coated line pipes ready for immediate marshland or trench installation.
Ready to Quote Your Nigeria Oil & Gas Project?
Send your Bills of Quantities (BOQ), Material Requisitions (MTO), or stock requirements. Our engineering sales team will provide a competitive CIF Lagos / CIF Onne Port quotation with full technical data sheets within 24 hours.