Short answer: Pickling is an acid treatment that dissolves oxide scale, rust and weld heat-tint from metal surfaces; it restores a clean, active surface ready for coating, passivation or bonding — and for stainless it is the essential partner to passivation that re-forms the chromium oxide film.
At a Glance
Why Pickle First
Scale and heat-tint block coatings and invite crevice corrosion, so pickling is step one in Metal Surface Treatment Guide. The stainless sequence is covered in Passivation Vs Pickling et Stainless Steel Surface Finishes; rust prevention in How To Prevent Metal Rust.
Process Control
Degrease first (Metal Degreasing Guide), pickle in the right acid, rinse, then passivate to rebuild the film. Tie to Surface Roughness Ra Guide for finish and document per Mill Test Certificate Guide.
QA & Supply
Confirm a clean, iron-free surface by Metal Ndt Guide (ferroxyl test for stainless) and pack per How To Prevent Metal Rust. HXSCO supplies pickled-and-passivated stock ready for fabrication.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Questions fréquemment posées
An acid bath that removes oxide scale, rust and weld heat-tint to expose clean base metal.
It strips the chromium-depleted heat-tint layer so passivation can rebuild the protective oxide film.
Hydrochloric or sulphuric for steel, nitric plus hydrofluoric for stainless, nitric for aluminium and copper.
No — pickling removes scale; passivation re-forms the corrosion-resistant film afterwards.
HXSCO supplies pickled-and-passivated steel and stainless ready for coating and fabrication.
Source Pickled & Passivated Metal from HXSCO
HXSCO supplies pickled-and-passivated steel and stainless ready for coating and fabrication. Send your grade and quantity for a quote.