Removal of oxides and weld heat tint
Pickling chemically removes scale, heat tint and the thin chromium-depleted surface layer beneath these oxides. It exposes a clean surface and creates the conditions for its natural protective layer to reform.
Our services / 01
Stainless steel pickling and passivation
Clean surface. Restored corrosion resistance
Pickling and passivation by immersion or spraySurface treatment for a long service life of your parts
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Surface cleanliness
Thorough rinsing for a uniform finish
Demineralised water for every rinse
Thorough rinsing removes residual pickling agents, including from areas that are difficult to access. Demineralised water helps prevent stains and dried-droplet marks that ordinary water can leave. The result is a clean surface with a uniform appearance.
01 / Immersion treatment
Pickling bath dimensions
| Bath 1 | 8 000 × 2 000 × 2 000 mm |
| Bath 2 | 7 500 × 2 000 × 2 000 mm |
| Bath 3 | 7 000 × 2 000 × 1 800 mm |
| Bath 4 | 6 500 × 1 500 × 1 500 mm |
Smaller baths are also available.
02 / Spray treatment
Pickling booth
| Dimensions | 15 000 × 6 000 × 5 000 mm |
We use spray pickling where the dimensions or design of a component make immersion treatment unsuitable.
For large weldments, tanks and structures, the bath size or the ability to immerse the whole component may be limiting factors. Spraying allows the pickling agent to be applied directly to accessible surfaces requiring treatment.
We assess the appropriate treatment according to the dimensions, shape and surface accessibility. This is followed by thorough rinsing with demineralised water and final inspection of every part.
Our work in practice
Pickling and passivation examples
Cleanliness and corrosion resistance01 / Pickling 02 / Passivation
Benefits of pickling and passivation
Welding produces oxides and heat tint on the stainless steel surface. Other manufacturing operations very often contaminate it with iron particles. Pickling and passivation help remove these unwanted layers and contaminants and restore surface corrosion resistance. These treatments prepare the surface for reliable use in service.
Supporting natural corrosion protection
Passivation removes free iron and promotes the formation of a continuous chromium-rich protective layer. This very thin layer is the basis of stainless steel corrosion resistance.
Restored corrosion resistance
Removing oxides and metallic contamination reduces sites where corrosion can develop.
Supporting a long component service life
A properly treated surface helps components fulfil their function over the long term under the conditions for which the material is intended.
Clean, uniform appearance
Removing weld heat tint and thoroughly rinsing with demineralised water contribute to a uniform surface appearance.
Professional procedures
Technical standards
Our stainless steel pickling and passivation procedures follow ASTM A380/A380M and ASTM A967/A967M.
ASTM A380/A380M
Procedures for cleaning, descaling, pickling and passivation of stainless steel
ASTM A967/A967M
Requirements for chemical passivation of stainless steel parts
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Let us start
with your project
Send us a drawing or photos of your parts.We will propose a process and prepare a quotation.
What we need for a quotation
Dimensions and number of parts
Required treatment and delivery date
Drawing or photographs
Not sure which treatment to choose? We can help.
Email usoffice@jspmetal.com
Operations and registered office
Javoříčská 542/6, 784 01 Litovel
Monday–Friday · 6:00–18:00