Common methods for anti-corrosion of 3PE anti-corrosion steel pipes

1. the two main methods commonly used for anti-corrosion of steel pipelines are outer coating and cathodic protection.

2. although most of the surface of the steel pipeline is covered by the coating, a slight leak will cause incredible corrosion rates, or even holes or cracks. therefore, in the anti-corrosion of steel pipelines, the coating system and cathodic protection are generally used in combination to achieve 99.99% coverage to avoid unimaginable consequences in the future.

3. the cathodic protection selected for anti-corrosion of steel pipelines is divided into dedicated cathodic protection and impressed current cathodic protection.

4. the purpose of the anti-corrosion coating for 3pe anti-corrosion steel pipes is to form a continuous covering layer of insulating material to directly insulate the metal from the electrolyte in direct contact, so that no correct electrolytic reaction can occur.

5. disconnected points during the coating laying process are called leakage points. the main reason for occurrence is during coating, transportation or installation. it may also occur due to coating aging, soil stress or movement of steel pipes in the soil. , failure to discover damage caused by a third party in a timely manner.