Environmental requirements for coated composite pipes
Release time:
2021-08-10
Plastic-coated composite pipes boast excellent pressure resistance and superior insulation performance. First and foremost, they provide protection for wires, making electric leakage impossible. Moreover, the walls of these plastic-coated composite pipes are remarkably smooth and completely free of burrs.
Plastic-coated composite pipe It boasts excellent pressure resistance and superior insulation performance. First and foremost, it provides protection for the conductors, making electric leakage impossible. The wall of the plastic-coated composite pipe is relatively smooth and free of any burrs.
During construction, it is advisable to use cables or wires. The term "plastic-coated" refers to a process in which the inner and outer surfaces of the steel pipe are modified with certain powders, enabling the steel pipe to acquire additional functionalities. These enhanced features are precisely why plastic-coated composite pipes can be used in a wider variety of applications.
Plastic-coated composite pipes are steel-plastic composite pipe materials made of organic substances such as a layer of polyethylene (PE) resin, ethylene-acrylic acid copolymer (EAA), epoxy resin (EP) powder, non-toxic polypropylene (PP), or non-toxic polyvinyl chloride (PVC). These pipes not only boast the advantages of high strength, easy connection, and resistance to water hammer typical of steel pipes, but also overcome the issue of steel pipes corroding when exposed to water. While plastic pipes suffer from drawbacks such as contamination, scaling, low strength, and poor fire resistance, plastic-coated composite pipes have a designed service life of up to 50 years. A major limitation is that these pipes cannot be bent during installation. When undergoing thermal processing or electric welding/cutting, the cut surfaces must be coated with a non-toxic, room-temperature curing adhesive provided by the manufacturer.
The pipeline is free of scale buildup and does not promote microbial growth, making it a hygienic pipeline that ensures the fluid remains free from secondary contamination. It features low fluid resistance, a smooth inner surface, high transportation efficiency, and a low friction coefficient—its roughness is comparable to that of galvanized steel pipes. As a result, fire-resistant plastic-coated pipes experience minimal energy loss during transport, reducing the required head pressure for pumps. Moreover, since the pump head can be adjusted by changing the impeller diameter, this allows for 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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