
Sheet metal processing and apparatus construction in stainless steel, steel and aluminium – from laser cutting to the finished assembly.

Demmler Apparatebau GmbH
Am Krähenhag 52, 78315 Radolfzell – MarkelfingenNew on Amplifa
About us
Demmler Apparatebau GmbH manufactures prototypes, small and medium series in stainless steel, steel and aluminium at its Radolfzell-Markelfingen site. The core processes are CNC laser cutting with a Trumpf TruLaser 3030 (4000 W) for large-format sheet up to 3000 x 1500 mm and material thicknesses up to 20 mm, CNC bending technology, roll bending, MIG/MAG and spot welding, vibratory finishing, and the construction of metal structures. Sheet metal processing is carried out directly from CAD data in DXF and DWG format. In addition, pickling, glass bead blasting and powder coating are offered together with long-standing regional partners. Customers come primarily from the pharmaceutical and food industries, automation, drainage and air conditioning technology, and general mechanical engineering. Products manufactured include containers, enclosures, tube frames, laser parts, complex bent parts, trolleys and stainless steel ovens.
- Site
- Radolfzell – Markelfingen
- Processes
- CNC laser cutting, Welding (MIG, MAG), Spot welding, CNC bending technology (edging), Blasting (steel shot), Powder coating (external), Structure construction (metal structures), Roll bending (roll bending technology)
- Materials
- Stainless steel, Steel, Aluminium
- Certificates
- CAD-based manufacturing (DXF/DWG)
- Founded
- 1980
- Industries
- Pharma, Food industry, Automation, Drainage and air conditioning technology, Mechanical engineering
- 01
CAD data preparation (DXF/DWG)
- 02
CNC laser cutting
- 03
CNC bending / roll bending
- 04
Welding (MIG/MAG, spot welding)
- 05
Vibratory finishing / deburring
- 06
Structure construction / assembly
- 07
External surface treatment (pickling, blasting, powder coating)
Materials & Processes
Stainless steel
The company's core material, e.g. for containers, enclosures, trolleys and ovens in the pharmaceutical and food industries.
Steel
Sheet and structural parts for mechanical engineering, automation and drainage technology.
Aluminium
Lightweight sheet material for laser parts, bent parts and assemblies.
Sites

Radolfzell – Markelfingen
DEProduction and engineering
- Lot size
- Prototypes, small and medium series; larger quantities also possible in laser
- Materials
- Stainless steel, steel, aluminium
- Trumpf TruLaser 3030 (4000 W, 3000 x 1500 mm)
- CNC press brakes
- MIG/MAG welding workstations
- Spot welding machines
- Vibratory finishing system
- Roll bending machine
Components







Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC laser cuttingMachining | – | 3000 mm × 1500 mm | – | – | Sheet (steel, stainless steel, aluminium) |
| Welding (MIG, MAG)Joining | – | – | – | – | various materials (stainless steel, steel, aluminium) |
| Spot weldingJoining | – | – | – | – | Assemblies, weld nuts |
| CNC bending technology (edging)Forming | – | 3000 mm × 1500 mm | – | – | Sheet (stainless steel, steel, aluminium) |
| Blasting (steel shot)Surface | – | – | – | – | Metals |
| Powder coating (external)Surface | – | – | – | – | Metals |
| Structure construction (metal structures)Assembly | – | – | – | – | Metals |
| Roll bending (roll bending technology)Forming | – | – | – | – | Metals |
| Vibratory finishing (deburring)Surface | – | – | – | – | Sheet, aluminium, steel |
| Pickling (external)Surface | – | – | – | – | Stainless steel |
| Glass bead blasting (external)Surface | – | – | – | – | Metals |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC laser cutting machine | Trumpf TruLaser 3030 | 1 | 3000 x 1500 mm, 4000W | – | Radolfzell-Markelfingen |
Additional services
Quality
Production takes place on modern CNC machines with practice-oriented production and precise workmanship. Pickling, glass bead blasting and powder coating are carried out by well-established regional partners.
| Evidence | Radolfzell – Markelfingen |
|---|---|
| CAD-based manufacturing (DXF/DWG) |
History
- 1980
Founded as a sole proprietorship by Werner Demmler; initial focus on saw sharpening services and general metalworking, soon specializing in stainless steel processing.
- 1983
Construction of a new workshop building in Unterdorfstrasse in Markelfingen; shortly afterwards, conversion into a GmbH.
- 2001
New production hall built in the newly developed industrial area in Markelfingen.
- 2013
Extension of a production hall.