Product Description :

Heat-treated and welded stainless steel structures are pickled in pickling baths. Pickling cleans the stainless steel’s surface of annealing scales and/or welding oxides. The corrosion resistance is restored in the welded area after pickling and a thorough high pressure water rinse.




  • Acidic Solution: Pickling baths typically consist of acidic solutions, like hydrochloric acid or sulfuric acid, designed for the removal of scales, oxides, and impurities from metal surfaces.
  • Temperature Control: Many pickling baths allow for temperature regulation, optimizing the pickling process for specific metal types and thicknesses.
  • Immersion Cleaning: Metal components are fully immersed in the bath, ensuring thorough and uniform pickling.
  • Chemical Compatibility: Pickling baths are formulated to be compatible with a variety of metals, such as steel, stainless steel, and aluminum.
  • Efficiency: They provide a fast and efficient method for preparing metal surfaces before subsequent treatments like plating or welding.


  • Surface Quality: Pickling baths remove scale and oxidation, leaving metal surfaces clean, smooth, and ready for further processing.
  • Corrosion Resistance: By eliminating impurities, pickling enhances the corrosion resistance of metal components, extending their service life.
  • Cost-Efficiency: Efficient surface preparation reduces the need for extensive rework or replacement of corroded metal parts, saving time and resources.
  • Improved Adhesion: Pickled metal surfaces offer better adhesion for coatings, paints, and other treatments, resulting in higher-quality finishes.
  • Consistent Results: Pickling baths provide consistent and reproducible outcomes, ensuring that metal components meet industry standards and specifications.


Parameters H2SO4 HCl
Concentration (by weight) 25% 30–50%
Bath temperature 60 ± 5°C 40–45°C
Approximate time of pickling 15–20 min. 15–20 min.
Inhibitor: since the acid attacks the metal and causes pitting, an inhibitor must be added 0.25–0.5% by weight 0.25–0.5% by weight


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