Anti-corrosion treatment methods for ductile iron pipes

Anti-corrosion treatment methods for ductile iron pipes
1.Asphalt paint coating
Asphalt paint coating is used for pipelines transporting gas. Preheating the pipe before painting can improve the adhesion of the asphalt paint and speed up drying.
2. Cement mortar lining + special coating
This internal anti-corrosion measure is suitable for pipelines transporting sewage and can improve the corrosion resistance of the lining.
3. Epoxy coal pitch coating
Epoxy coal pitch coating is suitable for both gas pipelines and sewage pipelines. It is a two-component coating that has high adhesion and a very smooth surface
4. Epoxy ceramic lining
Epoxy ceramic lining is suitable for sewage pipes and gas pipes, but due to the difficulty and high cost of the manufacturing process, there are certain limitations in use. Epoxy ceramic lining has high adhesion and smooth finish and is an excellent anti-corrosion coating.
5. Aluminate cement coating or sulfate cement coating
These two special cement coatings are suitable for internal anti-corrosion of ductile iron pipes used in sewage pipes to improve their ability to resist the erosion of acid and alkali components in sewage.
6. Polyurethane coating
The above are some ways to solve the corrosion of ductile iron pipes