3PE Exterior & Epoxy Coated Interior Composite Steel Pipe for Water

Industrial Piping

3PE Exterior & Epoxy Coated Interior
Composite Steel Pipe for Water

Product Introduction:

The 3PE Exterior & Epoxy Coated Interior Composite Steel Pipe for Water Supply is a high-performance composite pipe. Its outer layer consists of a three-layer polyethylene (3PE) structure, and the inner layer is coated with epoxy resin. The base pipe can be straight seam welded, seamless, or spiral welded steel pipe. The 3PE structure typically includes an inner epoxy powder coating, a middle adhesive layer, and an outer polyethylene layer. This design gives the pipeline excellent anti-corrosion and mechanical protection on the outside, along with superior internal corrosion resistance and hygienic performance provided by the epoxy resin.

Product Features:

  1. Outstanding Corrosion Resistance: The bottom epoxy powder coating in the 3PE system adheres well to the steel pipe surface, effectively preventing rust. The adhesive layer ensures a tight bond between the epoxy and the outer polyethylene layer, which serves as a strong barrier against soil chemicals and microbial corrosion.
  2. Excellent Weather Resistance: The outer polyethylene layer provides strong UV resistance, preventing aging and cracking caused by prolonged sun exposure. This makes the pipeline suitable not only for underground installations but also for above-ground applications where exposure to the elements is a factor.
  3. High Hygiene Performance: Epoxy resin is a hygienic, non-toxic, and odorless material. It ensures that the transported potable and domestic water maintains its quality without contamination.

Product Applications:

  1. Municipal Water Supply Projects: Widely used in main and branch water pipelines for urban water supply. The 3PE outer layer resists soil corrosion, while the inner epoxy resin ensures safe water quality.
  2. Building Water Supply and Drainage Systems: Suitable for delivering potable water, meeting hygiene standards. Whether installed inside or outside buildings, the 3PE outer coating adapts to various environmental conditions, including humid underground settings and exposure to sun and rain above ground.
  3. Industrial Water Supply Systems: In industries such as chemicals, food, and pharmaceuticals, the pipeline can resist corrosion from industrial water chemicals and ensures that the transported liquids meet strict hygiene standards.