Wet polishing of steel

Dimensions and capacities

Offered operations

Handling and packaging

Materials

Quality, audits, certificates

ViwateQ® technology is a modern method of surface treatment for stainless steel that ensures perfect cleanliness, high corrosion resistance, a uniform aesthetic appearance, and very low roughness. The process is environmentally friendly because it does not use aggressive chemicals and produces results that surpass traditional methods.

Wet blasting is the final step in surface treatment. With this technology, we can blast in the range of roughness Ra 0.4 to 0.8. We cater to the individual requirements of our customers. The choice depends on the desired appearance and roughness of the final surface. However, if you are unsure, please contact us and we will be happy to provide you with the necessary advice and recommendations.

NEW ViwateQ® TECHNOLOGY TO BE LAUNCHED IN FEBRUARY 2026

ViwateQ® technology significantly reduces surface roughness (Ra 0.4 to 0.8) compared to conventional dry blasting, resulting in improved surface hygiene and easier maintenance. The smooth surface without microcracks and impurities minimizes the risk of bacteria accumulation and increases the mechanical and chemical resistance of stainless steel.

The technology is used in a wide range of stainless steel products used in the food, pharmaceutical, chemical, and energy industries. It is suitable for components requiring high surface quality – from welded structures and piping systems to precision engineering parts.

Dimensions and capacities

At FK system, we currently have one blasting box for blasting stainless steel, aluminum alloys, and non-ferrous metals. The box is equipped with two jets.

Length (mm)	Depth (mm)	Šířka (mm)	Number	Jets
10,000	Approx. 5,000	6,000	1 boc	2

Offered operations

Stainless steel blasting

Wet steel polishing is a mechanical surface treatment process in which the material is exposed to a stream of abrasive particles mixed with water. The aim is to remove dirt, welding residues or oxidation and at the same time to unify the surface. Thanks to the water component, the process is gentler than dry blasting – it reduces dust, improves the working environment, and ensures a smoother surface.

Wet blasting is used in many industries – from the food and pharmaceutical industries to energy and design applications where a combination of functionality, aesthetics, and long-term surface durability is required. Thanks to the elimination of dust and uniform surface quality, it is also suitable for parts where appearance is key. However, it is important to emphasize that wet blasting is a process of visual and functional surface treatment, not a method of corrosion protection.

We can blast stainless steel in the range of roughness Ra 0.4 to 0.8. We cater to the individual requirements of our customers. The choice depends on the desired appearance and roughness of the resulting surface.

What is wet blasting and why is it so important?

Ensures a uniform surface appearance: This is particularly important for visible parts. The combination of abrasive and water creates a uniform matt surface without any traces of machining or welding.
Minimizes dust and protects the material: Unlike dry blasting, water binds the dust and dirt produced, improving the working environment and reducing the risk of surface damage and dust adhesion. At the same time, the process is gentler on thin or sensitive parts.

When should wet polishing be considered?

After welding and heat treatment: Welding and other thermal processes cause oxides, discoloration, and scale to form. Wet blasting effectively removes these defects and restores the surface to a uniform appearance and proper structure.
After pickling and passivation: Wet blasting can serve as a final treatment to give the surface a uniform texture. It is suitable, for example, for decorative or hygienic applications where a precisely defined appearance is required.
Before painting or coating: By removing dirt, grease, and oxides and creating the desired roughness, wet blasting is ideal preparation for painting, powder coating, or applying protective coatings.
When aesthetics are required: The process unifies the surface structure, removes traces of grinding or handling, and gives a uniform matt appearance. Thanks to its gentler effect than dry blasting, the surface is visually higher quality and more consistent.

Differences between dry blasting and wet polishing

Wet and dry blasting are two different surface treatment technologies that we choose based on the required surface quality, type of material, degree of dustiness, and nature of subsequent operations.

Preservation methods offered

Dry blasting: uses abrasive without water and is standard where high efficiency, aggressive material removal, or the creation of a suitable anchor profile for subsequent coatings is required. It is fast, versatile, and effective, but produces dust and requires high-quality extraction.
Wet polishing: combines abrasive with water. This significantly reduces dust, minimizes surface heating, and prevents static electricity. It is used for stainless steels, sensitive materials, removing oxidation, and fine finishing where a smoother, satin surface without deep roughness is desired. Wet blasting is also used in environments with strict hygienic or environmental requirements, such as the energy, food, and pharmaceutical industries.

Handling and packaging

The goal of each technological process is to optimize the final product with respect to the cost of the process performed. For this reason, we carry out all work in our pickling shop in several modes, which differ in the manner of inspection, handling of parts and packaging. The procedures described above can be performed for all types of structures, material grades, technological procedures with regard to the composition of the pickling bath, pickling length, bath temperature, etc.

Materials

Stainless steel
Aluminum
Copper
Brass
Plastics
Atabor

Quality, audits, certificates

The resulting surface after pickling and passivation is degreased, clean and free of corrosion. Passivation solution can cause a brownish appearance on the surface. Pickling, however, does not remove slag, burnt grease in welds, deep inclusions of carbon material, impurities ground into the surface, baked-on protective film residues, markings and other flaws. The passive layer protects the surface of carbon steel against corrosion on the order of days to weeks, depending on the storage method. Passivated parts must be stored appropriately and used and put into service or otherwise protected as soon as possible.

The final surface quality is supervised by our team of technicians from the quality department. On request, they will issue a report on performance of work on the order, according to CSN EN 10204 – Declaration of Conformity with the Order. If necessary, it is possible to agree with the quality manager on the issuance of an Inspection Certificate according to CSN EN 10240. It is necessary to know according to what standard you require the test and to have defined parameters for it. Learn more about conducting tests in our blog.