DHX offers a complete range of corrosion-resistant piping solutions, including steel pipes with a three-layer polyethylene (TPEP) coating, as well as fittings such as flanges, elbows, and tees. Our TPEP pipes feature a three-layer structure: an epoxy resin underlayer, an adhesive middle layer, and a polyethylene outer layer, providing superior corrosion resistance. The inner wall of the pipe is coated with a fusion-bonded epoxy (FBE) layer, offering excellent mechanical properties and resistance to internal corrosion, making it widely used in water supply, wastewater treatment, and the oil and gas industries.
- Outer diameter range: 100mm – 1500mm
- Wall thickness range: 3mm – 20mm
- Coating type: Fusion bonded epoxy (FBE) + polyethylene (PE)
- Maximum operating temperature: 80°C
Introduction
DHX provides one-stop piping solutions, including custom flanges, elbows, and other fittings, all coated with the same high-performance corrosion-resistant coating. Whether for underground installations, crossing overhead structures, or trenchless construction, DHX ensures seamless collaboration among all components of the piping system, enhancing safety, durability, and ease of installation.
Specification
| Specification | Parameter |
|---|---|
| Pipe Diameter Range | 100mm – 1500mm |
| Wall Thickness Range | 3mm – 20mm |
| Coating Type | Fusion-Bonded Epoxy (FBE) + Polyethylene |
| Coating Thickness | 2mm – 3mm |
| Pipe Length | 6m – 12m (Customizable) |
| Max Operating Temperature | Up to 80°C |
| Max Working Pressure | Up to 10 MPa (depending on specification) |
| Standards | API 5L, ASTM A53, GB/T 9711 |
| Applications | Water, Oil, Gas, Wastewater, Sewage, etc. |
Advantages

Applications
- Water Supply Systems: Widely used in the construction of water supply systems to safely deliver clean, uncontaminated water.
- Sewage and Wastewater Systems: Used to transport wastewater that may contain harmful bacteria and organic matter.
- Oil and Gas Pipelines: TPEP pipes are high-strength and corrosion-resistant, suitable for energy sectors such as oil and natural gas.
- Industrial and Municipal Engineering: Used for underground and trenchless installations in municipal infrastructure to ensure reliable and efficient fluid transport.
Get a Quote Now
We offer butt-welded pipe fittings, steel pipes, and flanges in various materials and specifications to meet diverse pipeline engineering requirements. Our experienced technical team provides effective solutions tailored to your specific needs. Contact us today for a quote and consultation!






