Steel construction, welded assemblies and special constructions – from laser cutting to final assembly in Liesborn
Demandt Stahl- und Maschinenbau GmbH
LiesbornNew on Amplifa
About Demandt Stahl- und Maschinenbau
Demandt Stahl- und Maschinenbau GmbH in Liesborn (North Rhine-Westphalia) is a family business which, according to its own statements, has around 300 years of company history and manufactures steel constructions, welded assemblies, special machinery and structural metalwork for industry, trade and public institutions. The range of services covers the complete program from planning, calculation and 2D/3D design (AutoCAD, Inventor, BOOST) through laser cutting (parts up to 1500 x 3000 mm) and plasma cutting (up to 2000 x 7000 mm), CNC-controlled sheet metal forming, sawing technology and MIG, MAG and TIG welding including welding robots for series production, right through to assembly and final assembly at home and abroad. Welded frames are manufactured up to 10 t dead weight; for conveyor technology the company supplies components and assemblies, including end stations for article picking in mail-order retail. Surface finishing includes hot-dip galvanizing, electro-galvanizing, painting (airless), powder coating, pickling of stainless steel as well as an in-house blasting system. As a certified specialist welding company, Demandt works according to DIN EN 1090-2 EXC 3, DIN 18800 and EN 288-3 with an International Welding Engineer. References range from staircase systems for schools and senior facilities to free-form formwork shapes and petrol station canopies.
- Site
- Liesborn
- Processes
- Laser cutting, Plasma cutting, Welding MIG-MAG-TIG (welding robot, series production), Sheet metal forming / folding (CNC-controlled), Cutting of sheets (sawing technology), Hot-dip galvanizing, Electro-galvanizing, Painting (airless process)
- Materials
- Steel S 235, Stainless steel 1.4301, Stainless steel 1.4828, Aluminium AlMg 3, Copper, Brass, Laser cutting, Plasma cutting
- Certificates
- DIN EN 1090-2 EXC 3 (in-house production control), DIN 18800, EN 288-3, Welding Engineer (IWE)
- Industries
- Industry and trade, Conveyor technology / mail-order picking, Public institutions, Shopping and cinema centres, Nursing homes, Hospitals
- 01
Design and planning (2D/3D)
- 02
Laser cutting / plasma cutting
- 03
Sawing technology / cutting to size
- 04
Sheet metal forming and rolling
- 05
Welding (manual and robot)
- 06
Assembly fabrication and pre-assembly
- 07
Surface finishing
- 08
Final assembly, packaging, shipping, on-site installation
- 09
Maintenance
Materials and Processes
Steel S 235
Structural steel for laser cutting up to 20 mm, steel construction and welded constructions.
Stainless steel 1.4301
Stainless steel for laser cuts up to 16 mm, railings and structural metalwork.
Stainless steel 1.4828
Heat-resistant stainless steel for laser cutting up to 16 mm sheet thickness.
Aluminium AlMg 3
Light metal for laser cutting up to 12 mm sheet thickness.
Copper
Laser-cuttable up to 4 mm sheet thickness.
Brass
Laser-cuttable up to 4 mm sheet thickness.
Laser cutting
Trumpf TruLaser 1030, parts up to 1500 x 3000 mm, also as a service.
Plasma cutting
Zinser 2325-N, semi-finished products up to 2000 x 7000 mm raw size.
Welding MIG/MAG/TIG
Manual and by welding robot for single parts and series production.
Sheet metal forming
CNC-controlled folding and rolling, bending lengths up to 4000 mm.
Surface finishing
Hot-dip galvanizing, electro-galvanizing, painting, powder coating, pickling, blasting.
Engineering
2D/3D design and calculation with AutoCAD, Inventor and BOOST.
Locations
Liesborn
DEHeadquarters and manufacturing
- Lot size
- Single parts up to series production
- Materials
- Steel, stainless steel, aluminium, copper, brass
- Trumpf TruLaser 1030 laser cutting system
- Zinser 2325-N plasma cutting system
- Kasto GKS 400 cold circular saw
- Behringer HPB 320 band saw
- MEP Shark 260 band saw
- MEP Shark 320 SXI band saw
- Trumpf Truma Bend 320 press brake (3200 kN, 4000 mm)
- Baykal APHS 1250 x 35 bending machine
- Helmut Lotze 162.3000 x 5 swivel bending machine
- Welding robots (MIG/MAG/TIG)
- Blasting system
- Sheet and pipe rollers
Parts and References
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Laser cuttingMachining | – | 3000 mm × 1500 mm | – | – | Steel S 235, Stainless steel 1.4301, Stainless steel 1.4828, Aluminium AlMg 3, Copper, Brass |
| Plasma cuttingMachining | – | 7000 mm × 2000 mm | – | – | General structural steels, Stainless steel, Aluminium |
| Welding MIG-MAG-TIG (welding robot, series production)Joining | – | – | 10 t | – | Steel, Stainless steel |
| Sheet metal forming / folding (CNC-controlled)Forming | – | 4000 mm | – | – | Sheet metal of various grades and thicknesses |
| Cutting of sheets (sawing technology)Machining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Hot-dip galvanizingSurface | – | – | – | – | Steel |
| Electro-galvanizingSurface | – | – | – | – | – |
| Painting (airless process)Surface | – | – | – | – | – |
| Powder coatingSurface | – | – | – | – | – |
| Pickling of stainless steelSurface | – | – | – | – | Stainless steel |
| Blasting (in-house blasting system)Surface | – | – | – | – | – |
| Design and planning (2D/3D, Autocad, Inventor, BOOST)Engineering | – | – | – | – | – |
| Final assembly / on-site installation (incl. packaging, shipping, domestic and international)Assembly | – | – | – | – | – |
| Steel construction / special constructions / structural metalwork (staircase, railing, canopies,Joining | – | – | – | – | Steel, Stainless steel |
| Assembly fabrication (complete assemblies incl. pre-assembly)Assembly | – | – | – | – | Steel, Stainless steel |
| Pipe rolling / sheet rollingForming | – | – | – | – | – |
13 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Laser cutting system | Trumpf TruLaser 1030 | – | 1500 x 3000 mm | – | – |
| Plasma cutting system | Zinser 2325-N | – | up to 2000 x 7000 mm raw size | – | – |
| Cold circular saw | Kasto GKS 400 | – | Saw blade Ø 400 mm; rectangle 210 x 80 mm; square 110 mm; round Ø 130 mm | – | – |
| Band saw | Behringer HPB 320 | – | 320 x 320 mm | – | – |
| Band saw | MEP Shark 260 | – | Rectangle 240 x 160 mm; square 200 mm; round Ø 225 mm | – | – |
| Band saw | MEP Shark 320 SXI | – | Rectangle 320 x 200 mm; square 250 mm | – | – |
| Press brake / bending machine | Trumpf Truma Bend 320 | – | 3200 kN (320 t), max. length 4000 mm | – | – |
| Bending machine | Baykal APHS 1250 x 35 | – | 350 kN (35 t), max. length 1250 mm | – | – |
| Swivel bending machine | Helmut Lotze Werkzeugmaschinen 162.3000 x 5 | – | max. length 3000 mm, max. sheet thickness 4 mm, bending angle 0°-135° | 1991 | – |
| Welding robot (MIG/MAG/TIG) | – | – | – | – | – |
| Blasting system | – | – | – | – | – |
| Sheet and pipe rollers | – | – | – | – | – |
| Press brakes | – | – | – | – | – |
Additional services
Reference customers
Quality and Certification
As a certified specialist welding company, Demandt carries out in-house production inspections according to DIN EN 1090-2 EXC 3 and manufactures according to DIN 18800 and EN 288-3 with an International Welding Engineer on the team. Welding processes are MIG, MAG and TIG, with a welding robot ensuring consistent quality even in series production.
| Evidence | Liesborn |
|---|---|
| DIN EN 1090-2 EXC 3 (in-house production control) | |
| DIN 18800 | |
| EN 288-3 | |
| Welding Engineer (IWE) |
History
Company history is stated on the website as around 300 years; according to the website, a flagpole at the Liesborn Abbey Church has existed since 1789.