Surface treatments

We provide top-tier surface treatments, including electro-galvanizing, hard chrome plating, and wet painting, with a focus on speed, reliability, and a tailored approach.

Perfect protection of metal surfaces

Our industrial solutions cover a full range of surface treatments, from electro-galvanizing and hard chrome plating to wet painting, along with material finishing and packaging for transport. With state-of-the-art equipment and extensive experience, we are equipped to meet even the most specific requirements. Our comprehensive services encompass the entire process – from initial material preparation and surface treatment to secure packaging for safe shipment.

With 80 years of experience in heavy industry and in-house production facilities, we handle everything under one roof. Additionally, we prioritize a highly individualized approach to every customer.

Our customers

Why choose OSTROJ?

80 years of experience

Leveraging decades of expertise and know-how in underground mining.

In-house production

All surface treatments are carried out under one roof.

Speed and reliability

We will professionally pack your goods and arrange their distribution.

Customer service

We offer expert consulting and a personalized approach.

Galvanic zinc plating

We ensure a perfect appearance and extended lifespan of steel surfaces using a fully automated rack galvanizing line. Corrosion resistance is provided by thin-layer (blue) passivation, thick-layer passivation, or yellow chromate.

For maximum durability, a sealing lacquer can be applied, which further enhances corrosion resistance by an additional 100 hours in the neutral salt spray test.

Rack window size 4000×1500×550 mm
Component weight up to 450 kg
Coating thickness 8–12 µm
For steel products
Blue passivation
Thick-layer passivation
Yellow chromate (Cr6+)

Hard chrome plating

Functional hard chrome plating reduces the coefficient of friction and enhances the corrosion and mechanical resistance of plated surfaces. The variable layer thickness, measured in hundreds of micrometers, provides a tailored solution for both new and refurbished parts.

Rack window size 2000×1700×400 mm
Component weight up to 550 kg
Coating hardness 1100–1250 HV100
For steel and stainless steel

References

For nearly 80 years, we have been manufacturing equipment for work both above and deep below the surface. Explore our reference projects.

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Helena Cetlová
Head of Sales, Electroplating Division

OSTROJ a.s.
Tesinska 1586/66
746 01 Opava, CZ