Pickling and Passivation process removes free iron contamination left behind on the surface of the stainless steel from machining and fabricating. These contaminants are potential corrosion sites that result in premature corrosion and ultimately result in deterioration of the component if not removed.In addition, the passivation process facilitates the formation of a thin, transparent oxide film that protects the stainless steel from selective oxidation ( corrosion ).

The failure of stainless steel components due to corrosion can reach catastrophic proportions. The cost in time, materials, rectification and lost production can be tremendous. If passivation is not carried out stainless steel can rust due to surface free iron, and since chlorides are also often absorbed from the atmosphere, some ferric chloride will be produced. Prolonged contact with ferric chloride will eventually initiate pitting and crevice corrosion on the stainless steel surface. Proper passivation will assist in the optimal restoration of the chrome oxide passive layer.

VK Jelly - Pickling Paste / Gel for Stainless Steel
VK ® Jelly ® ( Gel / Paste form ) which is used to clean weld seams and surrounding areas and is applied with brush. It is used to remove heavy scales, discolouration, annealing colours, rust particles near weld and welding affected area by heat without grinding or wire brushing or buffing.

Coverage : Approx. 100 meters of running weld seam / kg of VK Jelly

VK Spray - Stainless Steel Pickling Spray Gel / Paste
VK ® Spray is used to clean large stainless steel surface areas with plastic spray pump or pressurised spray bottle. It simultaneously removes annealing colours, ferritic contamination & weld burns. 

VK Spray is safe & easy to use for cleaning of large equipments like S.S. vessels, dryers, agitators, dairy machinery, fermentators, internals as well as externals of pipes by pressurised spray bottle or pump.

Coverage / kg : Approx. 40 sq. ft.

VK Picking Dip Liquid
VK® Dip is used for immersion (dipping) application & non-reachable areas of Stainless Steel ( S.S. ) components like internal & external of pipes, wire rolls, internal recessed areas of machinery etc. Heavy parts are dipped in a huge tank with the help of a chain pully. 

For cleaning & descaling of pipelines, VK Dip is circulated inside pipelines with the help of pump.

Coverage / kg :  Approx. 40 sq. ft.

VK Pass - 1 - Stainless Steel Passivation
VK® Passivation should be used after the application of VK Jelly, VK Spray or VK Dip as it is a must to passivate S.S. surface after pickling. VK Passivation products helps in the formation of a thin passive film on Stainless Steel surface which will protect it from further corrosion and contamination.

There are TWO types of passivation products depending on the end use of S.S. equipments / pipelines / parts.

VK Pass-1 is used for general industrial purpose S.S. equipments & pipings to be used in industries like chemical, paper etc. non-hygenic industries.

Coverage / kg : Approx. 40 sq. ft.