Leading Steel Pipe & Fittings Manufacturer — Sino East Steel Group
High-performance 3-layer polyethylene coating system for long-term corrosion protection of steel pipelines. Compliant with DIN 30670, CSA Z245.21, and ISO 21809-1 standards. Suitable for oil, gas, water, and chemical transportation pipelines.
Comprehensive range of 3LPE anti-corrosion coated steel pipes for diverse applications
Detailed specification parameters for 3-layer polyethylene coating system
| Parameter | Specification |
|---|---|
| Coating Type | 3-Layer Polyethylene (3LPE) |
| Layer 1 — FBE Primer | Fusion Bonded Epoxy, 150μm (±25μm) |
| Layer 2 — Adhesive | Copolymer adhesive, chemically bonds FBE to PE |
| Layer 3 — Polyethylene | Extruded PE, thickness 2.5mm – 3.7mm (diameter-dependent) |
| Total Coating Thickness | 2.65mm – 3.85mm |
| Pipe OD Range | 21.3mm – 2540mm |
| Operating Temperature | -40°C to +80°C (standard); up to +110°C (high-temp variant) |
| Applicable Standards | DIN 30670, CSA Z245.21, ISO 21809-1, EN 10289, NACE SP 0394 |
| Cathodic Disbondment | ≤ 8mm radius (28 days, 3.5V, 23°C) |
| Impact Resistance | ≥ 10 J/mm (minimum) |
| Peel Strength | ≥ 100 N/cm (23°C); ≥ 40 N/cm (50°C) |
| Elongation at Break (PE) | ≥ 600% (ASTM D638) |
| Design Life | 30–50+ years in buried service |
Why choose 3LPE coating for your pipeline projects
Triple-layer barrier isolates steel substrate from moisture, oxygen, and soil chemicals for decades of reliable service.
Design life of 30–50+ years under normal buried conditions, reducing replacement and maintenance costs significantly.
High impact resistance (≥10 J/mm), abrasion resistance, and penetration resistance protect the pipe during handling, transport, and installation.
FBE primer ensures strong adhesion to steel and excellent resistance to cathodic disbondment, critical for CP-protected pipelines.
Operates reliably from -40°C to +80°C with standard formulation; high-temperature variants available up to +110°C.
Certified to DIN 30670, CSA Z245.21, ISO 21809-1, and EN 10289. Full traceability and mill test certificates provided.
Industries and projects where 3LPE coated pipes are essential
Long-distance cross-country pipelines transporting crude oil, natural gas, and refined products.
Large-diameter water transmission mains for municipal and industrial water supply networks.
Subsea flowlines, risers, and export pipelines with enhanced coating for marine environment protection.
Pipelines carrying aggressive chemicals, acids, and corrosive fluids requiring high chemical resistance.
Pre-insulated district heating and cooling networks with 3LPE outer jacket for buried hot water pipes.
Abrasion-resistant 3LPE coating for mining slurry pipelines, tailings transport, and mineral processing.
Flowlines and gathering systems in corrosive oilfield environments with H2S and CO2 exposure.
City gate and gas distribution networks with 3LPE coating for buried steel gas mains and service lines.
Common questions about 3LPE coated steel pipes
Contact our team for a customized quotation. Competitive pricing, fast delivery, and full technical support.
Request a Quote NowExplore other anti-corrosion and pipe products
