Teaser Bild

Contract treatment




Surface treatment plants

We can rapidly and reliably carry out the treatment processes black oxidation (ferrous steel and casts), phosphating (zinc and manganese phosphating) and stainless-steel colouring in our computer-controlled fully automated contract treatment plants. 

A manually-charged treatment plant is also available for special processes such as the colouring of brass, copper and zinc die-cast components. 

You can profit from our knowledge and experience as a manufacturer of chemicals and plants for chemical surface treatments with regards to surface results. 

Plants and their options  

Plant I
Black oxidation of steel and iron as per DIN 50938 with methods groups A and B, and black colouration of stainless steel

  • Bath dimensions, max. (L/W/H): 1800 / 400 / 500 mm 
  • Component weight, max. 300 kg 
  • Treatment possible in immersion basket, drum or on frame 

Plant II
Black oxidation of steel and iron as per DIN 50938 with methods groups A, B and C (C is 3-bath black oxidation)

  • Bath dimensions, max. (L/W/H): 3000 / 500 / 700 mm 
  • Larger components are turned over or rotated for treatment
  • Component weight, max. 1100 kg
  • Treatment in immersion basket, on frame or on hook
  • Treatment in rotation process up to 2220 mm diameter and up to 400 mm width

Plant III 

Zinc phosphating and manganese phosphating as per DIN EN 12476

  • Bath dimensions, max. (L/W/H): 1800 / 400 / 500 mm 
  • Component weight, max. 600 kg 
  • Treatment possible in immersion basket, drum or on frame

Plant IV
Colouration methods

  • Brass colouration (black, brown) 
  • Copper colouration (black) 
  • Die-cast zinc colouration (black) 
  • Bath dimensions, max. (L/W/H): 480 / 200 / 300 mm 
  • Component weight, max. 20 kg 
  • Treatment possible in immersion basket or in drum 
  • You can deliver/pick up your goods at the following times: 
    • Acceptance of goods for contract treatment: Monday to Thursday: 07:00 to 15:40
    • Friday: 07:00 to 12:30
    • We are also happy to help outside these hours by prior agreement.
    • Goods delivered for black oxidation and phosphating are normally ready for pick up on the next working day. Goods for stainless steel, copper, brass and die-cast zinc colouration are normally treated within 2 to 3 working days.