What properties should the anti-corrosion layer of steel pipe have

The anti-corrosion layer of the steel pipe should have the following properties:

(1) Effective electrical insulation.

(2) Good moisture and water resistance.

(3) It has strong mechanical strength.

(4) The anti-corrosion layer has good adhesion to the steel surface.

(5) The material and construction process of the anti-corrosion layer should not have an adverse effect on the performance of the masterbatch.

(6) It has good resistance to cathodic disbondment.

(7) It has good chemical resistance and aging resistance. 

(8) The damage of the anti-corrosion layer is easy to repair. 

(9) The impact of the anti-corrosion layer on the environment should meet the corresponding requirements.