There are two types of anti -corrosion in the inner wall of the steel pipe: one is hot -melt epoxy resin powder (high -temperature sintering), and the other is liquid epoxy coatings, sprayed at room temperature and low temperature.

There are two types of anti -corrosion in the inner wall of the steel pipe: one is hot -melt epoxy resin powder (high -temperature sintering), and the other is liquid epoxy coatings, sprayed at room temperature and low temperature.




