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Do pigs damage the internal coatings of pipelines?

April 26, 2017coatings damage Internal Pigs pipelines

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Do pigs damage the internal coatings of pipelines?

1 Answer

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No. Although magnetic inspection pigs fitted with steel brushes may look like they would scrape internal coatings off a pipewall, they do not. The pig weight is spread over thousands of individual bristles, and as a result the point loadings are small. If required, special pigs such as the pin wheel pig can be designed to remove internal scale or damaged coatings.