Surface treatment


The treatment and finishing of surfaces of metal parts contributes to their protection and optimization. Whether semi-finisihed product or component, Wieland has a solution.


Every application has individual requirements - also with regard to the surface. We offer both standards, such as roughness or protective coating, but also special qualities or tin plating. However, our expertise also includes organoceramic thin films that meet different requirements through targeted modification with high-tech materials.

Our range of products

Our surface treatment at a glance.

Our complete product range

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Surfaces and coatings for rolled products

We manufacture our products both bare and coated on our own systems. Also, rolled products can be delivered dry or oiled. For improved resistance to oxidation, our products are passivated as standard.

The surface quality depends greatly on the roughness. We offer the following roughnesses as standard:

 Maximum value Special tolerance (µm)Maximum value Special tolerance I (µm)Maximum value Special tolerance II (µm)
Thickness (mm)RaRmaxRaRmaxRaRmax
0.1 - 0.40.2520.181.40.131
0.4 - 1.00.2520.
1.0 - 1.50.52--0.21.6
1,5 - 3,00,33****

Modification possible due to alloy or thickness

If you wish the end products to fulfil high visual requirements, we can offer you a range of special qualities to choose from:

  • for mirror finishing
  • for electrolytic polishing
  • for etching
  • bright rolled
  • mirror finish rolled
  • free of flow lines

These special products set certain restrictions on the range of geometries. Our experts will be pleased to advise you on the surface qualities best fulfilling your requirements.

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