Ductile iron pipe is a kind of economical water supply pipe. Now it is very popular. Do you know why the ductile iron pipe is so popular? In fact, it is mainly because of its excellent anti-corrosion performance, good ductility, good sealing effect, and easy installation. The most important thing is that ductile iron pipes are more anti-corrosive. Below, the ductile iron pipe suppliers will give you a simple analysis of why the ductile iron pipes have such superior anti-corrosion performance?
The anti-corrosion performance of ductile iron pipe is mainly due to the following reasons:
1. Asphalt paint coating
The asphalt paint coating is used to transport gas pipelines. Preheating the pipe before painting can improve the adhesion of asphalt paint and accelerate drying.
2. Cement mortar lining + special coating
This kind of internal anti-corrosion measures is suitable for pipelines that transport sewage and can improve the corrosion resistance of the lining.
3. Epoxy coal pitch coating
The epoxy coal tar 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
The epoxy ceramic lining is suitable for sewage pipes and gas pipes, but due to the difficult manufacturing process and high cost, it has certain limitations in use. The epoxy ceramic lining has high adhesion and smoothness and is an excellent anti-corrosion coating.
5. Aluminate cement coating or sulfate cement coating
Both of these special cement coatings are suitable for the internal anti-corrosion of ductile iron pipes for sewage pipelines and improve the corrosion resistance of the acid and alkali components in the sewage.
6. Polyurethane coating
It is a new type of green special coating developed to meet the needs of environmental protection. It has good wear resistance and corrosion resistance.
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