Quality Control in the Production of Intern al Coating for Gas Transmission Pipeline

This paper introduces the production process and quality control method of inter nal coating for gas transmission pipeline. It is pointed out that to obtain high quality internal co ating, each production step must be controlled to ensure the inspection results to meet the needs of relativ e standards or codes, inclu-ding the inspection and application of row materials, preparation of steel pipe a nd quality proving for coated pipe.