How to remove rust inside pipes?
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How to remove rust from the inside of DN150 oxygen pipes?
Are you referring to new pipelines or used pipelines? The new ones should be degreased and purged. Sandblasting is commonly used for rust removal. This post was last edited by Beifang Yunque on 2009-4-5 18:47.]
A simple and practical method is to use acid to push it in, then wash it with water and dry it! ! ! As for which acid to use, it’s up to you to decide; in the past hydrochloric acid was commonly used, now sulfuric acid is used, and the latest technology involves phosphoric acid! ! !
It can be pickled first, then washed with water and dried.
Sandblasting with specialized tools can be used to remove rust, and tying a wire to a steel wool pad and using it to scrub back and forth can also yield good results.
According to GB20801 4 12.1.2, for pipelines carrying strongly oxidizing fluids, degreasing should be carried out in sections or as individual units after the pipelines are assembled but before installation