Quality Assurance As Related to Field Performance of Plastic Coated Oil Country Tubular Goods

Field performance of plastic coated tubular goods is directly related to the following critical factors: 1- Metal cleaning and surface preparation 2- Adhesion between coating film and metal substrate. 3- Proper curing of the coating film. 4- Continuity and uniformity of the coating film. This paper deals with the various quality control techniques that are used to assure that these critical factors are controlled within specified parameters.