
Steel trading with coils, sheets, slit strip as well as CNC contract manufacturing of steel and stainless steel parts

INTERSTAHL Service GmbH & Co. KG
Wetter (Ruhr) · Donzdorf/GöppingenNew on Amplifa
About the Interstahl Group
The Interstahl Group comprises INTERSTAHL Service GmbH & Co. KG at its headquarters in Wetter (Ruhr) and INTERSTAHL Süd GmbH in Donzdorf/Göppingen. The core business is steel trading in thin sheet, heavy plate, coils and slit strip, among other things in galvanized, cold-rolled, hot-rolled, pickled, coated and clad versions as well as painted and film-laminated surfaces. In addition, the company supplies material from excess stock, over-rolled quantities and downgraded (2a) goods. At the Donzdorf site, Interstahl offers CNC manufacturing with milling, turning, drilling, surface grinding and plasma cutting and machines steel as well as stainless steel into ready-to-install parts; for many customers the company acts as a system supplier. Deliveries are made throughout Germany, also just-in-time. The quality management system is certified to DIN EN ISO 9001 by DVS Cert.
- Site
- Wetter (Ruhr)
- Processes
- CNC milling, CNC turning, Drilling technology, Surface grinding, Plasma cutting, Slitting of steel strip (slit strip), Cutting of sheets into blanks, Drilling
- Materials
- Thin sheet, Heavy plate, Galvanized steel, Cold-rolled steel, Hot-rolled steel, Pickled steel, Coated steel, Clad steel
- Certificates
- DIN EN ISO 9001, ISO 9001 (DIN EN ISO 9001)
- Founded
- 1990
- Industries
- Steel trading, Steel processing, Metalworking
- 01
Steel trading/procurement (coils, sheets, slit strip)
- 02
Slitting of strip and blanks
- 03
Plasma cutting
- 04
CNC milling
- 05
CNC turning
- 06
Drilling technology
- 07
Surface grinding
- 08
Just-in-time delivery
Materials and Finishes
Thin sheet
Core business as sheet, coil or slit strip, also rare materials and special shapes such as bars.
Heavy plate
Thicker sheet material in the steel trader's product range.
Galvanized steel
Hot-dip galvanized or electro-galvanized strip steel with corrosion protection.
Cold-rolled steel
Precise further processing with a smooth surface.
Hot-rolled steel
Standard material for structural and load-bearing applications.
Pickled steel
Pickled material with a cleaned surface.
Coated steel
Material with a wide variety of painted and film-laminated surfaces.
Clad steel
Material composite for special applications.
Stainless steel
Machining in CNC contract manufacturing according to individual requirements.
Our Locations

Wetter (Ruhr)
DEHeadquarters, steel trading (INTERSTAHL Service GmbH & Co. KG)
- Materials
- Thin sheet, heavy plate, coils, slit strip, galvanized/cold-rolled/hot-rolled/pickled/coated/clad steel,

Donzdorf/Göppingen
DECNC manufacturing/contract manufacturing (INTERSTAHL Süd GmbH)
- Materials
- Steel, stainless steel
Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC millingMachining | – | – | – | – | Steel, Stainless steel |
| CNC turningMachining | – | – | – | – | Steel, Stainless steel |
| Drilling technologyMachining | – | – | – | – | Steel |
| Surface grindingSurface | – | – | – | – | Steel |
| Plasma cuttingMachining | – | – | – | – | Steel, Stainless steel |
| Slitting of steel strip (slit strip)Forming | – | – | – | – | Steel |
| Cutting of sheets into blanksForming | – | – | – | – | Steel |
Additional services
Quality Management
The quality management system is certified to DIN EN ISO 9001; the certificates are regularly updated by DVS Cert. This safeguards adherence to delivery dates and verified quality, even for just-in-time deliveries.
| Evidence | Wetter (Ruhr) | Donzdorf/Göppingen |
|---|---|---|
| ISO 9001 (DIN EN ISO 9001) |
Company History
- 1990
INTERSTAHL Service GmbH founded on 02.01.1990 by Thomas Grosch.
Update of the quality management certificates (DIN EN ISO 9001) by DVS Cert.