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Pickling and Passivation of Carbon Steel is usually carried out to remove scale from the internal surfaces of pipework where mechanical and impact access is limited.
If scale is not removed prior to incorporation into a Hydraulic System loose particles can form a build up and produce blockages resulting in restriction to the free flowing oils and subsequently causing a decline in the efficiency or in some cases breakdown in the system.
By Pickling in an inhibited solution of Hydrochloric acid followed by a Passivation process to prevent oxidisation of the resulting finish the scale is fully removed and the pipework can be considered fit for service helping to prevent these occurrences.
