Coating systems for protection of threaded fasteners used with structural steel, piping, and equipment intended minimize the effect of corrosion. TG 148
This technical committee report describes current industry practices and gives information on the most commonly used generic coating systems for protection of threaded fasteners used with structural steel, piping, and equipment. The coating system provides a protective barrier between the base metal and the environment to minimize the effect of corrosion. The information presented in this report addresses steel quality, pretreatment processes, coating application, quality assurance/quality control, and test comparisons for evaluating corrosion resistance. This report summarizes existing technology and practices of various manufacturers, applicators, and users. It was prepared for the use of engineers, purchasing agents, coating inspectors, and project leaders in any industry having corrosion problems with threaded fasteners. The purpose is to provide information on the various generic coating systems currently available for corrosion protection of threaded fasteners.
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