What are the environmental requirements for coated composite pipes?
Release time:
2021-11-26
Plastic-coated composite pipes feature excellent compressive strength and thermal insulation. First, they serve to protect electrical wires, making electric leakage impossible. Moreover, the walls of these plastic-coated composite pipes are relatively smooth and free of any burrs.
Plastic-coated composite pipe It boasts excellent compressive strength and thermal insulation properties. First, it serves to protect electrical wires, making electric leakage impossible. The wall of the plastic-coated composite pipe is relatively smooth and free of any burrs.
Cables or wires are suitable for construction applications. Coating refers to a process in which the inner and outer surfaces of the pipe are modified with a specific powder, enabling steel pipes to have more functionalities. This is precisely why coated composite pipes can be used in a wider variety of industries.
A coated composite pipe is a steel-plastic composite pipe made of a layer of organic materials, including polyethylene (PE) resin, ethylene-acrylic acid copolymer (EAA), epoxy resin (EP) powder, non-toxic polypropylene (PP), or non-toxic polyvinyl chloride (PVC). This type of pipe not only boasts the advantages of high strength, easy connection, and resistance to water hammer typical of steel pipes, but also overcomes the issue of water corrosion that plagues steel pipes. While plastic pipes suffer from drawbacks such as contamination, scaling, low strength, and poor fire resistance, this composite pipe has a designed service life of up to 50 years. Its main limitation is that it must not be bent during installation; when subjected to hot working or electric welding/cutting, the cut surfaces should be coated with a non-toxic, room-temperature curing adhesive provided by the manufacturer.
The pipeline is free of scale buildup and does not harbor microorganisms, making it a hygienic piping system that ensures the fluid remains free from secondary contamination. It features low fluid resistance, a smooth inner surface, high conveying efficiency, and a low friction coefficient—its surface roughness is comparable to that of galvanized steel pipes. During transportation, fire-resistant plastic-coated pipes experience minimal energy loss, allowing for reduced pump head requirements. Since the pump head can be adjusted by changing the impeller diameter, this enables either increased flow rates or significant energy savings. In contrast, the inner walls of galvanized steel pipes tend to accumulate scale and become easily blocked.
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