Premium FBE / 2LPE / 3LPE Coated Steel Pipe
Our 3LPE (3-Layer Polyethylene), 2LPE, and FBE Coated Steel Pipes provide the ultimate anti-corrosion solution for buried and subsea pipelines. By combining the excellent chemical resistance of Fusion Bonded Epoxy (FBE) with the outstanding mechanical protection of high-density polyethylene (PE), these pipes ensure long-term durability and structural integrity in harsh environments.
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Coating Systems: 3LPE (FBE + Adhesive + PE), 2LPE (Adhesive + PE), FBE.
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Size Range: Outer Diameter (O.D.) 1/2″ to 100″ (21.3mm – 2540mm) | Wall Thickness (W.T.) 2.0mm – 60mm.
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Operating Temp: -40°C to +80°C.
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Key Standards: DIN 30670, ISO 21809-1, CAN/CSA Z245.20/21.
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Service Life: Up to 50 years with excellent cathodic disbondment resistance.
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Applications: Oil & gas transmission, water supply networks, chemical pipelines, and subsea lines.
Description
1. Product Overview
We provide industry-leading anti-corrosion coated steel pipes, including 3LPE (3-Layer Polyethylene), 2LPE, and FBE (Fusion Bonded Epoxy) coatings. These advanced coating systems are designed to protect steel pipelines operating in harsh subterranean and subsea environments.
The 3LPE system is globally recognized as the premier choice for pipeline corrosion protection, seamlessly merging the chemical bonding strength of FBE with the robust mechanical shielding of polyethylene.
2. Coating Layers Structure (3LPE)
- Layer 1: Fusion Bonded Epoxy (FBE): The first layer is an anti-corrosion FBE primer that chemically bonds to the prepared steel surface, providing excellent resistance to cathodic disbondment.
- Layer 2: Copolymer Adhesive: The middle layer is a grafted copolymer adhesive that acts as a tie layer, firmly bonding the FBE primer to the outer polyethylene layer.
- Layer 3: Polyethylene (PE): The outermost layer is a tough polyethylene jacket that provides superior mechanical protection, resisting impact, abrasion, and moisture penetration.
* Note: The 2LPE system consists of only the Adhesive and PE layers (without the FBE primer).
3. Executive Standards & Steel Grades
| Coating Standard | Base Pipe Standards & Grades |
|---|---|
| DIN 30670 | API 5L (Gr.B, X42, X46, X52, X56, X60, X65, X70, X80) |
| ISO 21809-1 | ASTM A53, A106, A333 |
| CAN/CSA Z245.20/21 | EN 10219, EN 10210, EN 10217 |
| NFA 49-710 | GB/T 3091, GB/T 9711 |
| Shell DEP 31.40.30.31 | AS/NZS 1163 |
4. Technical Specifications
| Parameter | Specification Details |
|---|---|
| Outside Diameter (O.D.) | 1/2″ – 100″ (21.3mm – 2540mm) |
| Wall Thickness (W.T.) | 2.0mm – 60mm |
| Length | Max 18m |
| Operating Temperature | -40°C to +80°C |
| Adhesion Strength | ≥ 100 N/cm |
| Coating Thickness | Standard: 2.0mm – 3.5mm Heavy Duty: Up to 4.5mm |
5. Manufacturing Process Flow
Our coating facility utilizes a continuous, fully automated extrusion and wrapping process to guarantee uniform coating thickness and flawless adhesion.
Pre-heating → Shot blasting (Surface preparation) → Induction heating → FBE spray (Primer) → Adhesive extrusion → PE wrapping → Water cooling.
Technical Workflow of the 3LPE Coating Process
6. Key Features & Applications
Key Features
- High mechanical strength and impact resistance.
- Excellent cathodic disbondment resistance.
- Extremely low moisture permeability.
- Extended service life, capable of lasting up to 50 years underground.
Applications
- Oil and gas transmission pipelines.
- Large-scale municipal water supply networks.
- Chemical processing fluid pipelines.
- Buried and subsea pipeline networks.