Fire-fighting steel-plastic composite pipes, today I will talk about the development status and broad prospects of steel-plastic composite pipes. Because of its excellent corrosion resistance, good flow capacity, non-scaling, long service life, etc., it replaces galvanized steel pipes. In recent years, steel-plastic composite pipes have been widely used in building water supply projects. Moreover, the country expressly stipulates that zinc steel pipes should not be used for water supply pipes, so the steel-plastic composite pipe market has broad prospects.

During the processing of the plastic-lined pipe, the PE pipe inside the galvanized steel pipe is uniformly and stably welded to the inner wall of the galvanized steel pipe, which is a decisive factor in determining the national standard of the steel-plastic pipe. Heat welding is currently used more frequently. The previous practice of most companies is to send the semi-finished steel-plastic composite pipes with PE pipes and high-pressure air into them in batches such as large heating furnaces (the heating furnace is preheated by the burner in advance), and after a period of drying After baking, make the whole batch of steel-plastic pipe national standard products reach the set temperature, take out the steel-plastic composite pipe for subsequent processing.

The excellent characteristics of the steel-plastic composite pipe have paved a very good road for its development. For steel-plastic composite pipe manufacturers, choose Yunkai, a professional manufacturer! We will continue to innovate to increase its share of water supply pipes in the country to more than 25%. Further actively and steadily deepen the work of industry identification certification and ensure the seriousness of the certification work; strengthen industry standards and guide the healthy development of the steel-plastic pipe industry; accelerate the pace of revision of industry standards, improve product quality, and improve the production level of the entire industry. , The excellent characteristics of steel-plastic composite pipe make the production of steel-plastic composite pipe have new improvements in raw materials, technology and equipment.

Plastic coated steel pipe for mining is a special gas pipeline. The pipe can transport any gas, including natural gas, gas, biogas, coal gas, etc. It is a multifunctional pipeline. Let's take a look at some of the properties of mining plastic-coated pipes.

(1) Flame-retardant and anti-static. The product adopts mining polyethylene paint, and its anti-static and flame-retardant components are evenly distributed on the surface and inner layer of the pipe. It is suitable for specific places where the mine is flammable and explosive.

(2) Extremely strong adhesion. After the inner and outer surfaces of the plastic-coated steel pipe are coated, bonded, and cured, the adhesion is ≥30N/10mm, and there is no damage after falling hammer impact and tearing.

(3) Corrosion resistance, non-scaling, low fluid resistance, the pipe has strong acid and alkali resistance and corrosion resistance, suitable for high-sulfur water in coal mines and water containing calcium and magnesium plasma. Because of its high surface finish, low fluid resistance, no scale adheres to it, and secondary pollution can be reduced.

(4) High pressure-bearing, good toughness of polyethylene powder coating, high mechanical strength of steel pipe, and strong endurance to external influences such as impact and bending.