Rigid-PU coating addresses chronic corrosion on northern Chinese gas pipeline

10/04/2004
An advanced 100% solids structural and rigid polyurethane coating was employed in rehabilitating the Dagang-Cangzhou gas pipeline in northeastern China.Outlined here are the challenges and requirements for such a system and the performance testing results achieved during this project on both laboratory and field prepared samples.Corrosion extentCorrosion is the primary factor affecting the longevity and reliability of pipelines throughout the world. In the US, there are more than 328,000 miles of natural gas transmission and gathering pipelines, 74,000 miles of crude transmission and gathering pipelines, and 82,000 miles of hazardous liquid transmission pipelines. Estimates of the corrosi...
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