Current Global acceptance of the three layer polyethylene coating system for the exterior coating of steel pipelines (for almost any environment on-shore/off-shore for oil, gas or water pipelines) has helped to expand the present coating use. The focus of this paper will be on coating material changes by technology, to up-grade the end use of the coating system and to present those changes to the engineering and corrosion community to the benefit of the end user or client.

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