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

the anti-corrosion layer of steel pipelines should have the following properties:
(1) effective electrical insulation.
(2) it has good moisture-proof and waterproof properties.
(3) it has strong mechanical strength.
(4) the anti-corrosion layer has good adhesion to the steel surface.
(5) the material and construction technology of the anti-corrosion layer should not hurt the performance of the masterbatch.
(6) it has good resistance to cathodic stripping.
(7) it has good chemical resistance and aging resistance.
(8) damage to the anti-corrosion layer is easy to repair.
(9) the impact of the anti-corrosion layer on the environment should meet the corresponding requirements.