Netherlands Germany

Stainless steel finish

After welding or heat treatment of a stainless steel, oxides are created in the form of annealing skin, scale and discolouration. Pickling the surface can remove these oxides to restore a clean, bright finish. Passivating the product after pickling gives it optimum resistance to corrosion. Passivation also gets rid of any residual traces of iron or other unwanted metals. Klinkenberg has its own treatment baths with dimensions of about 7.0 x 1.5 metres. This guarantees that all machinery manufactured at our factory meets our high quality standards before leaving the gates.

Pickling / Passivating


  • Removes thin layer of metal
  • Eats away oxide layer
  • Removes scale and annealing skin
  • Removes corrosion products

Grinding, polishing, superfinishing & mirror polishing

In areas such as the medical, pharmaceutical, foodstuffs and chemical industries, high levels of finish are expected from manufacturers. Klinkenberg can deliver a variety of finish levels, such as grinding, polishing, superfinishing, mirror polishing and electrolytic polishing. The use of one of the above finishes gives the end user a number of advantages. For example:

    • Better resistance to corrosion
    • Cleaner, smoother surface
    • Dirt clings less easily
    • Retards bacterial growth
    • The surface of the material is harder (more scratch-resistant)

Our testing and measuring methods are performed in line with ASTM D4417 Method A. Rugotest Roughness Number, versus the nominal Ra value in µm N11 = Ra25 N10 = Ra12,5 N9 = Ra6,3 N8 = Ra3,2 N7 = Ra1,6 N6 = Ra0.8 N5 = Ra0,5 N4 = Ra0,2 N3 = Ra0,1 N2 = Ra0.05 N1 = Ra0.025 N0 = Ra0.0125

Klinkenberg B.V.

Noordervaartdijk 3
1561 PS Krommenie
Telephone +31 (0)75 - 62 87 855
Fax: +31 (0) 75 - 62 80 476