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Pickling and passivation stainless steel – ASTM A380

WHAT IS PICKLING AND PASSIVATION?

Pickling is a process to remove the depleted outer Chromium layer where it no longer protects, due to the transformation from Chromium Oxide to Chromium Carbide. In this layer the content of Chromium is reduced to a minimum to protect the alloys surface.

So Pickling ensures the cleaning of the surface through etching with specific Acids to remove the Heat Tint from the HAZ (Heat Affected Zones) and any scale or contamination from the operational medium, to render the surface as new alloy, has come out from the mill.

Whereas Passivation is a process to enrich the Oxygen content around the alloys surface to react with a new layer of the Chromium and to regenerate, a newer protective layer of Chromium Oxide. So, Pickling and Passivation is a work package that cleans and protects your stainless steel. 

OUR SERVICE OFFERINGS

We have the experience and skills necessary to tackle just about every type of job that comes our way. With Chemical Cleaning Services, clients know exactly what to expect - professionalism, efficiency and exceptional results.

Our company, Chemical Cleaning Services (CCS),  is capable of performing pickling and passivation of all grades of Stainless steels. We successfully pickled and passivated almost all types of stainless steel pressure vessels, tanks, pipelines, spools, etc.

Our Pickling and Passivation operations are conducted according to the guidelines and recommendations of ASSDA and ASTM A380 & A967 through our parent company.
We are able to pickle and passivate Austenitic, Duplex, Super Duplex and all other special alloys. Our chemistry is based on Nitric acid and Hydrofluoric acids mixture that is deemed to remove all the Heat Affected Zone discolorations and to restore the protective Chromium Oxide layer.
CCS carries out the pickling and passivation of the stainless-steel structures/systems regardless the shapes or the sizes.

We have our experienced team and the proper equipment to pickle and passivate them by dipping in immersion tanks, spraying the surfaces using the chemicals mixtures in Gel form or by re-circulation of the pickling liquid using our compatible hoses and pumps.

Stainless steel vessels after Passivation 300x225 1

Stainless steel vessels after Passivation

Pickling and Passivation SS gratings

Stainless steel Gratings before and after Passivation

Stainless steel spools before Pickling

Stainless steel Spools Before Pickling and Passivation

SS Spools after Pickling and Passivation ( Chemical Passivation)

Stainless steel Assorted Spools post Passivation

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Stainless steel Spools after Passivation

Pickling and Passivation of Stainless steel

Pre and Post Pickling and Passivation 

Pickling and Passivation of SS Cable Trays

Stainless steel Cable Trays after Passivation

Passivation of Stainless Steel Gratings

Stainless Steel Gratings after Passivation

Pickled and Passivated Fan casings ready for delivery

Pickled and Passivated Stainless steel Fan Casings 

Passivated and preserved SS Spools

Passivated and Preserved SS spools

Pickling-and-Passivation-of-Assorted-Spools

Pickled and Passivated Spools left for Drip Drying 

Preservation after Pickling and Passivation of Stainless steel 304, 316, 316L

Preservation after Pickling and Passivation

Cleaning and Passivation of Brewery Tanks

Pickling and Passivation of Brewery Tanks 

Pickling and Passivation of Welding Joints

Pickling and Passivation of Welding Joints

316, 316L, 304 and Duplex stainless steel passivation

Pickling and Passivation of Stainless Steel Spools 

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After Pickling and Passivation of Fan Casings 

Stainless Steel Frame Passivation

Pre and Post of Pickling and Passivation of SS Large  Frame 

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Post of Pickling and Passivation of SS Large Heat Exchanger

 

 

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Post of Pickling and Passivation of SS Cooler 

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Post of Pickling and Passivation of SS Expansion Tank

Pickling & Passivation of SS vessel

Post of Pickling and Passivation of SS Large Vessel

Pre and Post Pickling and Passivation of SS Spools

Pre & Post of Pickling and Passivation of SS Pipe Spools 

Post Passivation of Stainless Steel ipe Spools

Post of Pickling and Passivation of SS Pipe Spools

Stainless Steel after Pickling & Passivation

Post of Pickling and Passivation of SS Manifolds

Stainless Steel Cable Trays after Pickling & Passivation

Post of Pickling and Passivation of SS Cable Trays

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Post of Pickling and Passivation of SS Water Tank

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Post of Pickling and Passivation of internal walls of SS Tank

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Post of Pickling and Passivation of Ceiling of SS Tank

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