Cold-rolled steel strip, bright and refined

Our range of products comprises cold-rolled steel strips, refined strips and specially refined strips in a variety of grades, dimensions and surface finishes. No matter which of our products you decided on, both production steps will be carried out right after each other at Knauf Interfer Cold Rolling GmbH in Iserlohn.

It is only possible to achieve the best material properties when one keeps an eye on the overall production process. And we attach great importance to the highest degree of precision and the lowest tolerances throughout. Precisely harmonised primary materials specifications are an essential requirement for an optimal cold-rolled product such as precision strip. The synthesis of technology and tools is the result of years of experience and development as well as sustainable quality assurance.

Range of products

Cold-rolled steel strip, sheets, thin sheets
Cold-rolled steel strip
(DIN EN 10139)
DC 01, DC 03, DC 04, DC 05, DC 06
Härten: A, LC, C 290, C 340, C 390, C 440, C 490, C 590, C 690
Sheets/slit strip (DIN EN 10130) DC 01, DC 03,  DC 04, DC 05, DC 06
Thin sheets (DIN EN 10205) T50, T52, T57, T61, T65
Engineering steels
(DIN EN 10025-2)
S 235-S 355
Case-hardening steels
(DIN EN 10132-2)
C 10 E, C 15 E, 16 MnCr 5, 17 Cr 3
Heat-treated steels
(DIN EN 10132-3)
C 22 E, 42 CrMo 4
Spring band steels
(DIN EN 10132-4)
C 55S, C 60 S, C 67 S
Micro-alloyed steels
(DIN EN 10268)
HC 260 LA, HC 300 LA, HC 340 LA, HC 380 LA, HC 420 LA
High-strength micro-alloyed
special materials
HC 500 LA, HC 550 LA, HC 600 LA, HC 700 LA, HC 750 LA, HC 800 LA, HC 850 LA
Special materials/additional grades upon request
Surface type
MA and MB n accordance with DIN EN 10139 (MC upon request)
A or B in accordance with DIN EN 10130
Surface finish
Defined roughness values and variable peak values ranging from Ra > 0.3 µm (glossy smooth) to Ra > 2.0 µm (extra rough)
Edge design
Cut edges (CE), special edges upon request
0.072-4 mm thick, 4-1,040 mm wide, coil weights up to 20 t


  Electrolytically galvanised Electrolytically tinned
Layout Thickness: 0.08–2 mm
Width: 4–1,000 mm
Weight: bis zu 10 t
Thickness: 0.08–1.5 mm
Width: 4–800 mm
Weight: bis zu 7.5 t
Layer thickness/
coating layer
Double-sided 2–10 µm
for each side
E 2.8/2.8
E 5.6/5.5
E 8.4/8.4
E 11.2/11.2
max. 30 g per side
Intermediate coatings
with prior consultation
Follow-up treatment - Without
- Phosphatised and/or rinsed with Cr (III)
- Oiled or not oiled
- Anti-corrosive oil
- follow-up treated
without chromium

Special finishes

Whether matte or highly glossy – with tinned and galvanised specially finished products from Knauf Interfer Cold Rolling GmbH, you will attain unique effects every time. Please contact us.


We produce cold-rolled steel strips with bright and refined finishes at the following location:

  • Giebel Kaltwalzwerk GmbH, Iserlohn


Just click here.
We are looking forward to
your enquiry.

Range of processing techniques

  • Cold-rolling
  • Annealing
  • Degreasing
  • Re-rolling
  • Texturing (roughness)
  • Slitting
  • Oiling
  • Oscillated winding
  • Winding (small coils)
  • Electrolytic galvanisation
  • Electrolytic tinning