(1)
Plastic-coated steel pipes should not be buried in reinforced concrete structural layers;
(2) Welding is prohibited during the installation of plastic-coated steel pipes;
(3) The installation of plastic-coated steel pipes should be gradually connected from large diameter to small diameter, and the pipe openings should be blocked in time;
(4) Throwing and violent impact of plastic-coated steel pipes are strictly prohibited during transportation, loading and unloading, and construction on construction sites;
(5) When installing plastic-coated steel pipes, if the pipe diameter is not larger than DN50, a pipe bending machine can be used for cold bending, but the bending radius of curvature shall not be less than 8 times the pipe diameter, and the bending angle shall not be greater than 10°.