Technical Articles
Polyethylene coated steel pipes
Posted: 11/06/2020 09:15:15 Hits: 18
In recent years, raw materials with excellent corrosion resistance are provided for processed steel products in the steel industry due to the rapid development of polymer compounds. Following the color coated steel plates, organic coated steel pipes were also developed in the late 1960s. Besides stable chemical properties, polyethylene also has the characteristics of low water absorption, low oxygen permeability and good electrical resistance. The coating will not be damaged at the bending part of the outdoor construction. Therefore, the polyethylene coated steel pipe is quite suitable and popular as an anti-corrosion protection pipe. The polyethylene coated steel pipe is a composite product with antistatic, flame retardant and anticorrosive properties made by special processing of the base steel pipe and then coating a special polyethylene plastic powder material on the inner and outer surfaces of the steel pipe. The polyethylene coated steel pipe overcomes the multiple defects of the steel pipe itself, such as easy rust, corrosion, high-polluting materials and low strength as well as easy deformation of plastic pipes, and integrates the common advantages of steel pipes and plastic products. It is an energy-saving and environmentally-friendly product that is mainly promoted by the Chinese government. The polyethylene coated steel pipe is widely used in the pipeline system construction of power, communications, transportation, municipal and mining. It is the first choice for bridge and road cable protection pipes.
Advantages of polyethylene coated steel pipes
High pressure and good mechanical properties
The polyethylene coated steel pipe continues the advantages of the steel pipe, which has high mechanical strength, and a strong ability to withstand external influences such as impact bending.
Good chemical resistance
The polyethylene coated steel pipe has the dual advantages of steel pipes and plastic pipes. The plastic coating has great chemical corrosion resistance and is suitable for transporting corrosive fluids containing sulfur, calcium, magnesium underground coal mines. The polyethylene coated steel pipe can be equipped with flanges, tees, elbows and other pipe fitting, which is coated with plastic inside and outside to ensure the anti-corrosion effect of the overall pipeline. The lifetime of the polyethylene coated steel pipe is several times longer than ordinary steel pipes.
Good coating adhesion
The pretreatment of the polyethylene coated steel pipe reaches the sa 2.5 standard. The scientific and reasonable process and advanced equipment ensure the quality of the coating, making the polyethylene coated steel pipe widely used.
No scaling and low fluid resistance
The inner surface of the polyethylene coated steel pipe is densely coated and does not scale.
The friction coefficient and roughness of the polyethylene coated steel pipe are smaller than those of ordinary steel pipes. The polyethylene coated steel pipe is an economical, environmentally friendly and cost-effective product.
Flame and antistatic resistance
The polyethylene coated steel pipe has flame and antistatic resistance, which is suitable for flammable and explosive places under mines.
A variety of connection methods for easy construction
The polyethylene coated steel pipe can be connected with couplings, flanges and other connection methods, which are easy to install and reliable.
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