The outer wall of the inner and outer plastic-coated pipes adopts the anti-corrosion layer of hot-melt PE, and the inner wall adopts the anti-corrosion method of epoxy powder, and the powder is evenly coated on the surface of the pipe body after being heated and melted at high temperature. It greatly improves the adhesion and thickness of the coating, and increases the ability to resist bumps and corrosion. It is a modified epoxy resin powder inner and outer coated pipeline.
The plastic lined pipe is made of ordinary carbon steel pipe as the matrix, lined with thermoplastic engineering plastics with excellent chemical stability, which is formed by cold drawing composite or rotational molding, which not only has the mechanical properties of steel pipes, but also has the characteristics of corrosion resistance, slow scaling, and not easy to grow microorganisms of engineering plastics, and is an ideal pipeline for transporting acid, alkali, salt, corrosive gas and other media. Lined with food-grade polypropylene, it can be used in food, medical* and drinking water industries. Common plastic-lined pipes are: steel-lined polypropylene pipes (GSF.).PP), steel-lined polyethylene pipe (GSF.).PE), steel-lined polyolefin tubing (GSF.PO) steel-lined polytetrafluoroethylene pipe (GSFf4）。
The internal and external plastic-coated pipe is a new type of steel-plastic composite pipe, which is composed of steel pipe substrate, epoxy resin inner coating and polyethylene outer coating, which has excellent mechanical properties and anti-corrosion and anti-aging properties. It is widely used in water conservancy, electric power, chemical industry, petroleum and many other industries.
In addition to improving the service time of steel pipes, steel pipes are also manifested in the following aspects through anti-corrosion
1. Combine the mechanical strength of the steel pipe and the corrosion resistance of the plastic.
2. The lining layer reaches 2More than 5mm, scratch and bump resistant.
3. The friction coefficient of the inner wall is small, which reduces energy consumption.
4. The inner wall is smooth and not easy to scale.