Characteristics of fire-fighting plastic-coated steel pipes, differences between galvanized steel pipes and plastic-coated steel pipes

First, the characteristics of fire-fighting plastic-coated steel pipes:
1. It is hygienic, non-toxic, does not accumulate scale, does not breed microorganisms, and ensures fluid quality.
2. It has strong flame retardant ability. Under the combustion test, the coating will not spontaneously ignite or fall off.
3. The installation process is mature, convenient, and fast, and various connection methods can be used.
4. It has good weather resistance and is suitable for harsh environments such as fire water supply and foam that have been stationary for a long time.
5. The pipe wall is smooth, improving transportation efficiency and long service life.
6. Environmentally friendly. Maintaining water for a long time can ensure excellent water quality and will not cause pollution to the environment due to the passage of time.

Second, the differences between galvanized steel pipes and plastic-coated steel pipes:
1. A galvanized steel pipe reacts molten metal with the iron matrix to produce an alloy layer, thereby combining the matrix and the coating. Hot-dip galvanizing is to pickle the steel pipe first. To remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an aqueous solution of ammonium chloride or zinc chloride or a mixed aqueous solution of ammonium chloride and zinc chloride and then sent to in a hot dip plating tank. The advantages of galvanized pipes are uniform coating, strong adhesion, and long service life. For hot-dip galvanizing, many companies now reduce the thickness of the galvanized layer in order to make profits. The original theoretical life span was 7-8 years, but now product quality can only be guaranteed for two to three years.
2. Fire-fighting plastic-coated steel pipes are a combination of steel pipes and plastics. They can be used for pipes of any diameter. The connection methods are not only limited to threaded connections and groove connections of galvanized pipes, but also welded connections, flange connections, and double connections. Metal welding connections, etc. The emergence of plastic-coated steel pipes solves the above problems. It has the strength of steel pipes, and the inner and outer layers of the steel pipes are anti-corrosion to make the inner and outer walls smooth without reducing the circulation diameter and improving transportation efficiency. Corrosion-resistant, strong coating adhesion, good impact resistance, adaptable to normal work in harsh natural environments. The service life is long, more than five times that of galvanized pipes.