3PE Coated LSAW Pipe For Oil Pipeline
3PE Coated LSAW Pipe For Oil Pipeline:
High-quality 3PE coated LSAW steel pipe compliant with API 5L, ISO 21809-1, DIN 30670. Ideal for oil, gas, and water transmission. Custom diameters 219-1422mm, wall thickness 6-50mm. Factory direct from Tianjin, China.
Technical Specifications
|
Parameter |
Specification |
Standard Reference |
|
Pipe Type |
LSAW (Longitudinally Submerged Arc Welded) |
API 5L, ISO 3183, GB/T 9711 |
|
Coating System |
3PE (Three-Layer Polyethylene) |
ISO 21809-1, DIN 30670, GB/T 23257-2017 |
|
Base Material |
Carbon steel: Gr. B, X42, X46, X52, X60, X70, X80 |
API 5L PSL1 / PSL2 |
|
Outer Diameter (OD) |
219 mm - 1422 mm (8 " - 56") |
- |
|
Wall Thickness |
6 mm - 50mm |
- |
|
Pipe Length |
6 m - 12.5 m (customizable) |
- |
|
Surface Preparation |
Sandblasting to Sa 2.5 grade, anchor profile 50-100 μm |
ISO 8501-1 |
|
Epoxy Powder (FBE) Layer |
≥120 μm (≥150 μm for large diameters) |
ISO 21809-1 |
|
Adhesive Layer (AD) |
170 - 250 μm |
DIN 30670 |
|
HDPE Outer Layer |
See table below (by pipe diameter) |
GB/T 23257-2017 |
|
Total Coating Thickness |
Standard Grade: 1.8-2.5mm |
- |
|
Reinforced Grade: 2.5-3.7mm |
HDPE Outer Layer Thickness by Pipe Diameter
|
Pipe Diameter (DN) |
Minimum HDPE Thickness (mm) |
Total Coating Thickness (mm) |
|
≤ 100 |
2.5 |
≥ 2.5 |
|
100-250 |
2.7 |
≥ 2.7 |
|
250-500 |
2.9 |
≥ 2.9 |
|
500-800 |
3.2 |
≥ 3.2 |
|
≥ 800 |
3.7 |
≥ 3.7 |
Note: Reinforced grade is mandatory for offshore, high-pressure, and corrosive soil applications.
Performance & Quality Assurance
|
Test Parameter |
Requirement |
Test Standard |
|
Adhesion Strength (Peel) |
≥70 N/cm |
ISO 21809-1 |
|
Impact Resistance |
≥5 J/mm |
GB/T 23257-2017 |
|
Cathodic Disbondment (65°C, 48h) |
≤ 8mm |
ISO 21809-1 |
|
Vicat Softening Point |
≥ 110°C |
ISO 306 |
|
Electrical Spark Test |
25 kV (oil/gas), 15 kV (water) |
ISO 21809-1 |
|
UV Resistance |
No cracking or embrittlement after 3000h |
ASTM D4329 |
|
Service Temperature Range |
-30°C to 80°C |
- |
|
Design Life |
30-50 years |
- |
Applications
3PE Coated LSAW Pipe For Oil Pipeline:
|
Oil & Gas Transmission |
Onshore and offshore pipelines (API 5L PSL2 compliant) |
|
Municipal Water & Sewage |
Potable water, wastewater, and reclaimed water systems |
|
Chemical & Petrochemical |
Transport of corrosive fluids under high pressure |
|
Power & Thermal Plants |
Cooling water and steam lines |
|
Marine & Offshore |
Subsea pipelines, platform risers, and jacket structures |
|
Mining & Slurry Transport |
Abrasion-resistant conveyance systems |
Why Choose Our 3PE Coated LSAW Pipes?
✅Certified Compliance: All pipes tested and certified per API 5L, ISO 21809-1, DIN 30670.
✅Full Traceability: Mill test reports (MTR), coating thickness logs, and NDT records provided per batch.
✅Customization: OD, wall thickness, length, end preparation (bevel, threading), and coating grade tailored to project specs.
✅Logistics: Shipment from Tianjin Port, FOB/CIF/CFR terms, export-ready packaging.
✅Support: Technical drawings, installation guides, and post-sale coating repair kits available.
export Reference
★Project Lead: China Petroleum Pipeline Bureau (CPPB), CNPC - $1.2B Crude Export Pipeline System (CEPS), Iraq.
★Product Supplied: 40,000 metric tons of 3PE-coated LSAW steel pipes (API 5L X60 PSL2), OD: 406-1219 mm, wall thickness: 12.7-25.4mm.
★Coating System: 3PE (FBE + Adhesive + HDPE), total thickness 3.0-3.7 mm; FBE ≥150 μm, HDPE 3.2mm (for ≥800mm OD), surface prep: Sa 2.5.
★Standards Compliance: Fully compliant with ISO 21809-1 and GB/T 23257-2017.
★Field Performance: Zero coating failures after 18 months in high-salinity, 50°C desert conditions - verified by SGS Iraq.
★Export Execution: Shipped from Tianjin Port, CIF Basra; 100% NDT tested; full MTRs, coating logs, and ISO 9001/45001 documentation provided.
★Client Endorsement: Officially added to the approved vendor list by Basra Energy Company.
3LPE Coating process
3PE coated LSAW pipe for oil pipeline
