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. Sanitary and non-toxic, no scale accumulation, no microbial growth, and guaranteed fluid quality.

2. Strong flame retardancy. Under the combustion test, the coating has no spontaneous combustion phenomenon and does not fall off.

3. The installation process is mature, convenient, and fast, and a variety of connection methods can be used.

4. Good weather resistance, suitable for long-term static fire water supply, foam, and other harsh environments.

5. The pipe wall is smooth, improves transportation efficiency, and has a long service life.

6. Environmental protection, maintaining water for a long time can ensure good water quality, and will not pollute the environment due to the passage of time.

Second, the difference between galvanized steel pipes and plastic-coated steel pipes:

1. Galvanized steel pipes react molten metal with 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 ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride and then sent to the hot-dip galvanizing tank. The advantages of galvanized steel pipes are: uniform coating, strong adhesion, and long service life. Hot-dip galvanizing is because many companies now reduce the thickness of the galvanized layer to make profits. The original theoretical life is 7-8 years, and now the product quality can only be guaranteed for two or three years.

2. Fire-fighting plastic-coated steel pipe is a combination of steel pipe and plastic. It can be used for pipes of any caliber. The connection method is not limited to the threaded connection and groove connection of galvanized steel pipes, but also welding connection, flange connection, bimetallic welding connection, 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 steel pipes are anti-corrosive 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, adapt to normal work in harsh natural environments. Long service life, more than five times that of galvanized steel pipes.