Anti Corrosion 3PE Coated Seamless Steel Pipe For Crude Oil Transportation
Product Overview
Item | Details |
Product Name | Anti Corrosion 3PE Coated Seamless Steel Pipe for Crude Oil Transportation |
Base Pipe Type | Seamless Steel Pipe |
Standard Compliance | API 5L, ISO 3183, DIN 30670, ISO 21809-1, SY/T 0413 |
Main Application | Crude oil transmission pipelines, natural gas transportation, offshore oil engineering, water supply projects, chemical industrial piping |
Minimum Order Quantity | 50 Tons |
Supply Capacity | 10000 Tons per Month |
Port of Shipment | Tianjin Port, China |
3PE Coating Layer Structure & Parameters
Layer No. | Layer Material | Standard Thickness Range | Core Function |
1 (Bottom Layer) | Fusion Bonded Epoxy (FBE) | ≥ 100μm | Provides electrochemical corrosion protection, forms strong chemical bonding with steel pipe surface |
2 (Middle Layer) | Copolymer Adhesive (AD) | 170 μm - 250μm | Acts as molecular bridge, bonds epoxy bottom layer with polyethylene outer layer |
3 (Outer Layer) | High Density Polyethylene (PE) | 1.8 mm-3.7mm | Provides mechanical protection, blocks moisture and corrosive medium from penetrating |
Product Size Specifications
Parameter | Range |
Outer Diameter (O.D.) | 114.3 mm-3020mm |
Wall Thickness (W.T.) | 5 mm-60mm |
Pipe Length | 6m / 12m / custom length available |
Available Steel Grades
Category | Steel Grades |
Carbon Steel | Q195, Q235, Q345, 10#, 20# |
Pipeline Steel | L245( B ), L290(X42), L320(X46), L360(X52), L390(X56), L415(X60), L450(X65), L485(X70) |
3PE Coating Performance Parameters
Performance Test | Standard Requirement | Test Condition |
Interlayer Peel Strength | ≥ 70N/cm | Room temperature |
Cathodic Disbonding Radius | < 8mm | 1.5V, 65°C, 28 days |
Low Temperature Impact Resistance | No crack | -30°C, 3.5J impact energy |
Oxidation Induction Time | ≥ 20 minutes | 200°C |
Vicat Softening Point | > 110°C | - |
Polyethylene Density | 0.94g/cm³ - 0.96g/cm³ | - |
Advantages of 3PE Coated Seamless Steel Pipe
Advantage | Description |
Excellent Corrosion Resistance | Three-layer structure forms an impermeable barrier to prevent soil, chemical and microbial corrosion, extend pipe service life by 3-5 times compared to uncoated pipes |
High Mechanical Strength | Resists external impact, soil stress and plant root penetration, suitable for long-distance buried crude oil pipeline projects |
Low Moisture Permeability | Effectively blocks water and salt penetration, avoids steel matrix corrosion in high salinity and high humidity soil environments |
Customizable Coating Thickness | Adjust coating thickness according to project environment and pipe size to balance performance and cost |
Meets International Standards | Produced and tested in strict compliance with international and industry standards, stable quality for large-scale engineering projects |
Application Environment Recommendations
Application Scenario | Recommended Coating Standard | Key Notes |
Onshore Buried Crude Pipeline (Harsh Soil: High Salinity/Acidity) | ISO 21809-1 / SY/T 0413 | Thicker coating required for long-term durability |
Onshore Standard Soil Environment | DIN 30670 / SY/T 0413 | Standard thickness meets engineering requirements |
Offshore Crude Oil Pipeline | 3LPP Coating Recommended | 3PE can be used for shallow water applications, 3LPP offers better temperature and UV resistance for deep water offshore environments |
Long Distance High Pressure Crude Oil Transmission | ISO 21809-1 | Stricter thickness requirements for large diameter high pressure pipes ensure project safety |
Packaging & Delivery
Item | Details |
Pipe End Protection | Plastic or metal protective caps for both ends to protect coating and threads |
Surface Treatment | Available with varnish as optional extra protection |
Packaging | Bundled with steel strips, seaworthy packing for container or bulk vessel shipment |
Delivery Time | 15 - 30 working days after deposit received, depends on order quantity |
Payment Terms | T/T, L/C at sight |
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