Blog | Inox Passivation

Rouging and Derouging: Stainless Steel Chemical Cleaning

Results achieved using pH neutral derouging chemicals.

Rouge is made up of a variety of iron oxides (rust). It is important that corrosion products (rust or rouge) are not present in your manufacturing and distribution systems, tanks or equipment.

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Rouge: What is it?

Derougign and passivation treatment before and after

Rouge is a common problem in pharmaceutical facilities, most often found in high-purity water and clean-steam systems fabricated in austenitic stainless steel.

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Passivation Of Stainless Steel

Stainless steel after a chemcial passivation process.

Introduction There are many industries that demand high-purity systems in which they can manufacture their products (pharma, food, cosmetics, semi-conductor, etc.) or whose processes are carried out in hostile environments and need to be assured that their equipment is up to the task …

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Preferred Pickling and Passivation Providers

INOX Passivation Ltd specialises in the onsite pickling and passivation of pipework and vessels by circulation, and the spray-pickling of large fabrications. This year (2020), we have pickled and passivated a 1.5 km pipeline for one of the worlds largest chemical producers, and comple …

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Optimising Your Chilled Water / LPHW Loops

Debris captured on chilled water system.

Many processes within your plant depend on effective chilled water and low-pressure hot-water (LPHW) systems. These are typically constructed from carbon steel pipework and circulate water / glycol with the addition of a corrosion inhibitor.

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Dynamic Flushing

Part of a purified water system after pre-commissioning flushing.

The photos show the debris we captured during the pre-commissioning flushing of a purified water system. (3” pipework, 35m3/hr flow-rate, 50 micron strainer).

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Prevention of Contamination - Supplier Selection

Ordinarily, the main reason for having a chemical cleaning contractor on your site is to either remove a form of contamination from your equipment, or as part of a pre-commissioning activity to ensure your equipment is in optimal condition for service. It is therefore, of the utmost i …

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Three Ways to Test the Surface Cleanliness of your Stainless Steel

Stainless steel gets its corrosion-resistant qualities from the chrome-oxide (passive) layer that forms spontaneously when it comes into contact with atmospheric oxygen. This protective layer is extremely thin and in order to fully form, the stainless surface must be thoroughly cleane …

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BSSA Membership

Following on from last week’s registration with CHAS, we are now proud members of the British Stainless Steel Association (BSSA). “The BSSA provides marketing support, technical advice, information, training and education in all aspects of stainless steel. The primary objective of the …

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Chas Accreditation

We are very pleased to kick off the New Year by being accredited with CHAS Premium.

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