Research Status of Evaluating Method for Anti-Corrosion Coating Quality of Horizontal Directional Drilling Through Pipeline

The test steps, calculation formulas and evaluation criteria of several methods for evaluating the anti-corrosion coating quality of horizontal directional drilling through pipelines at home and abroad are classified and summarized. The difficulties and problems of these test methods are analyzed. The development directions of the evaluating methods for anti-corrosion coating quality of horizontal directional drilling through pipelines are proposed.