The method of anti-corrosion treatment of ductile iron pipe

The method of anti-corrosion treatment of ductile iron pipe:

1. The pipeline of asphalt coating to transport gas. Preheating the pipe before painting can 
 improve the adhesion of asphalt paint and speed up drying.

2. Cement mortar lining + This internal anti-corrosion measure is suitable for sewage pipelines,
 which can improve the corrosion resistance of the lining.

3. Epoxy coal tar tar coating is not only suitable for gas pipelines, but also for sewage pipelines.
 It is a two-component coating with high adhesion and smooth appearance

4. Epoxy ceramic lining is suitable for sewage pipelines and gas pipelines, but due to the difficult
 production process and high cost, it has certain limitations in application. The epoxy ceramic 
 lining has high adhesion and high finish, and is an excellent anti-corrosion coating.

5. Aluminate cement paint or sulfate cement paint is suitable for the internal anticorrosion of ductile
 iron pipes of sewage pipes, which improves the corrosion resistance of acid and alkali components in 
 sewage.

6. Polyurethane coating has a very good effect in anti-corrosion effect.