We remove rouge from stainless steel systems safely, using pH-neutral, ASTM-aligned processes, then repassivate the surface so it stays protected. Available on-site across India.
Derouging is the removal of iron oxide deposits, commonly called rouge, from stainless steel systems used in high-purity or regulated processes. Rouge is a rust-like film that builds up on the surface over time. If it is left alone, it can flake off and contaminate your product or water. Derouging cleans the surface back to bare, sound steel.
Not all rouge is the same. Knowing the class tells us how to remove it. We assess your system first, then pick the right chemistry for the type of rouge we find.
If you see any of these, it is worth having the surface checked before it affects a batch or an audit.
We assess the system condition first, then select the right chemistry and procedure for Class I, Class II, or more resistant rouge. We use pH-neutral chemistry where suitable, which is gentler on your equipment and safer for your team.
After derouging, we recommend repassivation so the surface regains a stable, corrosion-resistant protective layer. Derouging removes the rouge; repassivation stops it from coming back quickly. We can do both in one project.
Our processes are designed to remove rouge while protecting stainless steel surfaces used in pharmaceutical and hygienic systems, including water for injection loops and reactors.
Every job runs through the same six steps, and each one is documented against the standards for your industry.
We examine the surface with imported, fully calibrated instruments and identify the rouge class (I, II, or III).
We match the chemistry to the rouge class, the alloy, and your industry's limits.
pH-neutral chemistry where suitable, applied on-site with controlled temperature, flow, and pressure.
We rinse down and check the surface is back to sound steel before going further.
Citric acid based CitriSurf rebuilds the chromium-rich passive layer.
A written inspection report recording condition, method, and result, for your compliance file.
The process above stays the same. What changes is the standard your work is judged against, because a WFI loop, a brewery tank, and an aerospace part are not held to the same rules.
Across every industry, the surface treatment work itself follows ASTM A967, ASTM A380, and AMS 2700. CitriSurf 77 Plus also meets ASTM B600 for titanium surfaces, and supports NSF, USDA, USFDA, EU, and cGMP compliance.
Tell us your industry and we will tell you which of these your report needs to cover.
Rouging Solutions supports on-site derouging projects throughout India. We bring the process to your plant, so systems that cannot be moved, like large tanks, vessels, and piping loops, can be cleaned in place.
Rouging Solutions provides derouging services across India, removing iron oxide deposits, known as rouge, from stainless steel systems in regulated industries. The company assesses the rouge class (Class I, II, or III) using imported, fully calibrated instruments, removes it with pH-neutral, ASTM-aligned processes, and then repassivates the surface to restore corrosion resistance. The work follows ASTM A380 and ASTM A967, and the documentation is matched to the standards of the customer's industry, whether that is USFDA and 21 CFR Part 211 for pharmaceutical, ISO 13485 and EU MDR for medical devices, HACCP and FSSAI for food and beverages, ASTM D632 and BIS for salt, or AMS 2700 for aerospace. Derouging is available on-site for pharmaceutical and other high-purity systems, and closes with a written inspection report.
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Derouging is the removal of iron oxide deposits, commonly called rouge, from stainless steel systems used in high-purity or regulated processes.
Yes. We assess the system condition and select the right chemistry and procedure for Class I, Class II, or more resistant rouge conditions.
Yes. Our processes are designed to remove rouge while protecting stainless steel surfaces used in pharmaceutical and hygienic systems.
Yes. Repassivation is recommended after derouging so the stainless steel surface regains a stable, corrosion-resistant passive layer.
Yes. Rouging Solutions supports on-site derouging projects throughout India.
The derouging and passivation work follows ASTM A380 and ASTM A967, plus AMS 2700 where it applies. The documentation is then matched to your industry, so a pharma job is recorded against USFDA and 21 CFR Part 211, a medical device job against ISO 13485 and EU MDR, a food or beverage job against HACCP, FSSAI, and GFSI, a salt job against BIS and ASTM D632, and an aerospace job against AMS 2700.
The derouging and passivation work follows ASTM A380 and ASTM A967, plus AMS 2700 where it applies. The documentation is then matched to your industry, so a pharma job is recorded against USFDA and 21 CFR Part 211, a medical device job against ISO 13485 and EU MDR, a food or beverage job against HACCP, FSSAI, and GFSI, a salt job against BIS and ASTM D632, and an aerospace job against AMS 2700.
Yes. Every job closes with a written inspection report recording the starting condition, the rouge class, the method used, and the result, written against the standards your industry is audited on.
