Epoxy powder-coated carbon steel pipe
环氧粉末涂层碳钢管
Anti-Corrosion & Insulated Piping / Steel pipe anti-corrosion coating
Epoxy powder-coated carbon steel pipe
环氧粉末涂层碳钢管
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Epoxy Powder Coated Steel Pipe Introduction
Overview
Epoxy powder coated steel pipe is a high-performance composite pipeline solution, combining the structural strength of carbon steel with the exceptional corrosion and chemical resistance of epoxy resin coating. It is widely used in water supply, fire protection, chemical processing, and municipal engineering, offering a reliable, long-lasting alternative to traditional uncoated steel pipes.
Structure & Composition
The pipe consists of two core components:
1. Base Steel Pipe: The structural core, typically seamless or straight-welded carbon steel pipe, providing high pressure resistance and mechanical strength.
2. Epoxy Powder Coating Layer: A thermosetting epoxy resin coating applied via electrostatic spraying and high-temperature curing. This uniform, seamless layer forms a dense, inert barrier that isolates the steel substrate from corrosive media.
Key Specifications
Specification | Details |
Nominal Diameter | DN15 – DN2000 (customizable) |
Wall Thickness | 2.5mm – 25mm (based on working pressure requirements) |
Coating Thickness | 300μm – 1000μm (standard range: 400μm–600μm) |
Standard Length | 6m – 12m (custom lengths available) |
Coating Types | Internal coating only, external coating only, double-sided coating |
Connection Methods | Flange connection, socket connection, welded connection, threaded connection |
Compliance Standards | CJ/T 120, CJ/T 253, GB/T 28897, ISO 21809-5 |
Core Advantages
Excellent Corrosion Resistance: The epoxy coating is resistant to acids, alkalis, salts, and common chemical media, preventing rust and corrosion caused by water, sewage, and industrial fluids.
Hygienic & Safe: The food-grade epoxy coating meets national drinking water standards, with no toxic or harmful substances leaching into the transported medium.
Smooth Flow Performance: The smooth inner wall reduces fluid resistance, prevents scaling and bacterial growth, and maintains stable flow rates over long-term use.
High Mechanical Strength: The steel pipe core withstands high working pressure, while the cured epoxy coating resists impact, abrasion, and cracking during transportation and installation.
Long Service Life: With proper installation, the pipeline can operate reliably for 30–50 years with minimal maintenance requirements.
Environmentally Friendly: The solvent-free epoxy powder coating process eliminates volatile organic compounds (VOCs), making it a clean, sustainable choice for pipeline construction.
Primary Applications
Water Supply & Distribution: Urban drinking water networks, secondary water supply systems, and rural water conservancy projects.
Fire Protection Systems: Automatic sprinkler systems, fire hydrant pipelines, and foam fire extinguishing pipelines.
Sewage Treatment: Municipal sewage collection pipelines, industrial wastewater transportation, and sludge conveying systems.
Chemical & Petrochemical Industry: Transportation of corrosive chemical media, brine, and process fluids in chemical plants and refineries.
Building & Infrastructure: HVAC systems, building water supply, and underground utility pipelines for commercial and residential construction.
Specifications
Specification | Details |
Nominal Diameter | DN15 – DN2000 (customizable) |
Wall Thickness | 2.5mm – 25mm (based on working pressure requirements) |
Coating Thickness | 300μm – 1000μm (standard range: 400μm–600μm) |
Standard Length | 6m – 12m (custom lengths available) |
Coating Types | Internal coating only, external coating only, double-sided coating |
Connection Methods | Flange connection, socket connection, welded connection, threaded connection |
Compliance Standards | CJ/T 120, CJ/T 253, GB/T 28897, ISO 21809-5 |