Rust removal: Use wire brushes and other tools to polish the surface of the steel, which can remove loose or oxidized scale, rust, welding slag, etc. Derusting things by hand can reach Sa2 level. The fire-fighting water supply plastic-coated composite steel pipe has passed a high-temperature continuous burning test experiment, and it has reached 300 ° C for one hour, which has reached the limit, indicating that the pipeline has a strong high temperature resistance function. It has high impact resistance and high health and safety function, which is very suitable for the field of fire sprinkler systems. The powder coating of plastic-coated steel pipe adds flame retardant and modified epoxy resin powder. The coating has excellent temperature resistance and does not burn or soften in long-term use. The surface is lubricated, reduces fluid resistance, increases flow, and does not scale, and will not block pipes and block sprinklers. It has been used more than 10 times so far.
In recent years, the application of plastic-coated steel pipe products, many underground coal mine equipment, will use plastic-coated steel pipe for water supply and drainage, fire watering, underground shotcrete, positive and negative pressure ventilation and drainage and other pipe networks. The coal mine environment is different from the ordinary environment. When ordinary steel pipes are used under the mine, when the impact force is encountered, it is very easy to have problems. The use of new plastic-coated pipe products can overcome the shortcomings of ordinary steel pipes, and the plastic-coated mining pipe products are light in weight, easy to carry, install and protect. The second reason why the epoxy powder anti-corrosion steel pipe production plant Wuhui received the inquiry letter from the Shanghai Stock Exchange is that the life expectancy will be increased from the original 20 to 30 years to a longer life, so as to save replacement, maintenance and other costs. . The inner and outer coated epoxy resin drainage pipes are cheap, the inner and outer coated polyethylene composite pipes, the inner and outer epoxy resin drainage pipes, the inner and outer epoxy anti-corrosion composite pipes, and the mining plastic-coated composite pipes.