01
Alkaline zinc
Electrolytic coating with precise thickness control (from a few to over 20 µm). Excellent corrosion resistance, high gloss and uniform color.
Modern galvanizing plant.
We deliver anti-corrosion coatings that combine exceptional durability with flawless aesthetics. We are one of the most advanced galvanizing plants in Northern Poland, guaranteeing process stability and full technological support.
Solutions for demanding environments. From classic zinc to automotive standards.
We operate on a modern, optimized rack line.
The dimensions of our process tanks and a maximum hanger load capacity of up to 400 kg allow us to process a wide range of components—from small parts to large, complex structures. We ensure complete archiving of process parameters, which is essential for full monitoring and safety.
02
Alkaline zinc-nickel
Advanced alloy coating delivers extreme corrosion resistance at lower thicknesses, high-temperature stability and excellent wear resistance.
03
Passivation
We offer blue and iridescent passivation for zinc coatings, as well as silver passivation dedicated to zinc-nickel coatings. We utilize trivalent chromates that are safe for health and the environment.
Precision finishing for maximum protection
Our engineering team fully understands that the long-term durability of any component depends on its finish. Our passivation processes create an advanced anti-corrosion barrier that combines high chemical resistance with the aesthetics demanded by modern industry.
Blue passivation
A process performed after electrogalvanizing that forms a thin protective layer on the zinc surface. It enhances corrosion resistance and imparts a distinctive silvery-blue sheen to components.
Thick-film passivation
A chemical process that forms a thicker passive layer on the metal surface. It provides enhanced corrosion resistance, even in moisture-exposed environments, and can impart a slightly iridescent or yellowish hue to the coating.
Offered process and finishing specifications
Process
Available passivation options
Alkaline zinc
- White (blue)
- Thick-film (iridescent)
- Black
Zinc-nickel
- Silver
An optional sealer can be applied to extend corrosion resistance.
Complete control over every micrometer
As an engineering partner, we leave nothing to chance. Our in-house laboratory operates continuously, enabling constant process bath monitoring, rapid diagnostics, and real-time preventive actions.
We verify coating thickness using magnetic induction and specialized FISHERSCOPE equipment with precision down to 0.01 µm. We operate in accordance with rigorous PN-EN ISO 9001:2015 and PN-EN ISO 14001:2015 standards.
Precision measured in numbers
<0,003% Claim Rate
An industry-leading benchmark resulting from process stability and team dedication.
215 000 m²
The volume of components coated in 2025 alone stands as a clear testament to our operational scale and the trust placed in us across diverse sectors.
– 25% Processing Time
Through comprehensive optimization, we reduced lead times without compromising coating quality—delivering a tangible advantage for time-critical projects.
Sustainability. Eco-friendly technology.
At LEANN, we care about the environment.
Coatings offered by LEANN are hexavalent chromium-free and cobalt-free. In our processes, we utilize trivalent chromium-based solutions, which are safer for human health and the environment.
In addition, we invest heavily in environmental protection—operating our own automated wastewater treatment plant to ensure all effluent strictly complies with environmental standards.
Process quality begins with proper preparation.
We have prepared detailed guidelines for collaborating with our galvanizing plant—covering everything from order placement and technology selection to component preparation, final inspection, packaging, and coating evaluation standards. These guidelines will help you properly prepare your components for the process and avoid unnecessary delays.
Precisely defined requirements are the first step toward achieving a durable, repeatable coating.
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