Waterproof casing how to do a good job of anti-corrosion measures?

If the pre-buried rigid waterproof casing through the wall is corroded, the pipe wall will become thin, if the phenomenon of corrosion inside the waterproof casing, all will have a certain impact on water quality. According to the different thicknesses of the materials used in the pipe and time have an impact, while these corrosion is a re-pollution of the water. So the corrosion of the pipe has a certain relationship with the life of the waterproof casing, spray paint anti-corrosion treatment is important.
The simple method is to use solvent for cleaning. This method can remove oil, grease, dust and other organic substances on the steel surface, but it can not remove the rust spots and other stains on the surface of the steel pipe. Tools such as wire brushes are used to polish the rust on the surface of the steel pipe to remove loose or floating scale, rust, welding slag and other stains. Pickling can also remove oxidation, rust and old coating, however, pickling is very polluting to the environment and harmful to human body. In general, pickling treatment is not recommended. It is better to do spray-painting to remove rust. Spray-blown rust removal uses a high-power motor to drive the spray leaves to rotate at high speed, which not only thoroughly removes rust, oxide and dirt, but also completely removes the steel pipe under the violent action of abrasives and friction, which can obtain the required uniform roughness.
After rust removal, please paint the surface of waterproof casing as soon as possible. It is necessary to ensure that the waterproof sleeve is treated within four hours, which should not exceed 24 hours on sunny days and under normal atmospheric conditions, otherwise it will easily affect the service life of the waterproof sleeve.
Generally the inside of the sleeve product should be painted. The number of coatings and the thickness of the coating need strict attention when painting, and must choose a compliant coating.