Two-layer Polyethylene Coated Steel Pipes
The 2pe coating steel pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.
Two-layer Polyethylene Coated Steel Pipes
The 2pe coating steel pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.
2PE Pipes are steel pipes coated with a two-layer polyethylene system, featuring an adhesive layer (170-250 µm) and a polyethylene outer layer (1.8-3.7 mm), designed for superior corrosion resistance. Compliant with DIN 30670, DIN 30671, and SY/T0413-2002 standards, these pipes are ideal for oil and gas pipelines, water supply systems, and chemical processing plants, offering a minimum tensile strength of 415 MPa.
The coating process involves surface preparation via shot blasting, followed by adhesive application and polyethylene extrusion at high temperatures (~200-220°C). Available in sizes from OD 219 mm to 2020 mm, wall thicknesses from 5 mm to 25 mm, and lengths of 4 m, 6 m, 12 m, 18 m, or 21 m, Two-Layer Polyethylene Pipes meet diverse project requirements. Ends are plain, beveled, or threaded, with plastic caps or steel rings for protection during transport.
Rigorous testing, including peel resistance (≥25 N/cm at 50°C), impact strength (11 J per 2.9 mm coating), and holiday detection (25 kV), ensures compliance with industry standards. The adhesive layer ensures strong bonding, while the polyethylene layer provides mechanical protection against abrasion and chemical corrosion, making Corrosion-Resistant Pipes suitable for sewage systems and marine pipelines.
Compared to 3LPE or single-layer FBE pipes, 2PE Pipes offer a balance of cost and performance for moderate to severe corrosion environments, with a lifespan of 30-40 years. They are ideal for buried or submerged applications, such as industrial fluid transport, but may require additional coatings in extreme rocky soils.
2PE Pipes address pipeline corrosion, mechanical wear, and environmental degradation, delivering reliable, long-lasting solutions for industrial and infrastructure projects.
2PE Pipes offer distinct advantages over other coated and uncoated pipes. Below is a comparison of key features.
| Feature | 2PE Pipe | 3LPE Pipe | Single-Layer FBE Pipe |
|---|---|---|---|
| Coating Type | Adhesive + Polyethylene (2-4.5 mm) | Epoxy + Adhesive + Polyethylene | Single-layer FBE (300-500 μm) |
| Corrosion Resistance | Excellent for buried pipelines | Superior for extreme conditions | Good for moderate environments |
| Cost | Moderate | Higher cost | Cost-effective |
| Lifespan | 30-40 years | 40-50 years | 20-30 years |
| Applications | Oil, gas, water, sewage | Oil, gas, harsh environments | Water, HVAC, fire protection |
| Feature | Description |
|---|---|
| Corrosion Resistance | Two-layer polyethylene coating provides excellent protection against corrosion. |
| Durability | The PE layer adds toughness and resistance to mechanical damage. |
| Waterproofing | Effective moisture barrier, ideal for submerged and buried pipelines. |
PE pipes are often manufactured according to industry standards, such as those from ASTM (American Society for Testing and Materials) or ISO (International Organization for Standardization), ensuring quality and safety.
Two-layer coating protects against chemical and environmental corrosion.
Up to 40 years with minimal maintenance.
Tensile strength up to 415 MPa for robust performance.
Plain, beveled, or threaded ends for seamless integration.
Balanced cost for corrosion protection in moderate environments.
Meets DIN 30670, DIN 30671, and SY/T0413-2002 standards.
| Standard | Description |
|---|---|
| GB/T3091 | Welded steel pipe for low pressure liquid delivery |
| GB/T9711 | Petroleum and natural gas industries -- Steel pipe for pipelines |
| IS: 3589 | Steel tubes for water and sewage |
| IS: 1978-1982 | Steel tubes for use in transportation of oil, gas, and petroleum products |
| ASTM A53 | Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless |
| DIN 2458 | Welded steel pipes and tubes |
| EN10217 | Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties |
| API 5L | Line Pipe |
| SY/T5037 | Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid service |
| SY/T5040 | Spiral submerged arc-welded steel pipe piles |
| CJ/T3022 | Spiral submerged-arc welded steel pipe for municipal heat supply |
| ASTM A252 | Welded and seamless steel pipe piles |
The zinc coating (80-100 microns) enhances the corrosion resistance of 2PE Pipe , protecting the carbon steel base in harsh environments. The chemical composition ensures weldability and durability for
| Standard | Description |
|---|---|
| ANSI/AWWA C104/A21.4 | American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water |
| ISO 21809 | Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems |
| DIN 30670 | Polyethylene coatings of steel pipes and fittings |
These standards ensure that 2PE Pipe meet rigorous requirements for corrosion resistance, mechanical strength, and suitability for applications like oil and gas pipelines, water transmission, and chemical processing.
2PE pipe typically refers to a type of polyethylene-coated steel pipe used in water distribution, drainage, and gas supply systems.
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