
Manufacturing custom bent sheet metal from aluminium, steel and stainless steel up to 6 metres edge length in Langerwehe.

alu EXPERTEN GmbH
52379 LangerweheNew on Amplifa
About alu EXPERTEN
The alu EXPERTEN GmbH in Langerwehe, located between Cologne and Aachen, is a medium-sized sheet metal fabricator specializing in the manufacture of custom bent parts from aluminium, steel and stainless steel. With two LVD panel shears and two press brakes each with 4 to 6 metres processing length, bent sheet metal with material thicknesses up to 5 mm is produced; cutting can be set to one tenth of a millimetre precision. The service portfolio includes cutting and sawing, folding and bending, punching, drilling, aluminium welding including weld dressing, and stud welding. Powder coating in RAL and DB colours, anodizing and wet painting are offered through long-standing partner companies; pre-coated, foldable material is stocked. Several hundred tonnes of material are processed annually, sourced from German and Austrian production. Typical products are wall copings with an proprietary clip system, sunshade boxes, window sills, drainage channels and hat profiles for construction, architecture and sun protection. Ordering is via an online shop with configurator, from individual parts through to project support, with home delivery or pickup at the works.
- Site
- Langerwehe
- Processes
- Folding & bending (bent parts), Cutting & sawing (panel shears), Welding, Weld seam dressing, Punching (holes), Drilling, Powder coating (via partner companies), Anodizing (subsequently, via partner)
- Materials
- Aluminium (plain), Aluminium (RAL and DB colours, pre-coated), Steel, Stainless steel, Aluminium
- Certificates
- Pickup at the works by appointment
- Industries
- Construction/Building materials, Sun protection/Louvered roof and sun protection systems, Metal processing, Construction/Building materials (wall copings, window sills, drainage channels)
- 01
Consulting and planning
- 02
Cutting & sawing
- 03
Folding & bending
- 04
Punching and drilling
- 05
Welding and post-processing
- 06
Coating & finishing (partner)
- 07
Delivery or pickup
Materials and Processes
Aluminium
Main material for bent sheet metal, stocked plain and pre-coated in RAL/DB colours.
Steel
Sheet metal for bent parts and cut sheet blanks in small and large quantities.
Stainless steel
Sheet metal processing up to 5 mm material thickness for custom bent parts.
Locations
Langerwehe
DEFactory outlet and production; pickup by appointment
- Part weight / size
- Sheet metal up to 5 mm material thickness
- Lot size
- Individual part manufacturing through to project support
- Materials
- Aluminium, steel, stainless steel
- 2 press brakes (LVD, edge length 4 to 6 m)
- 2 panel shears (LVD, up to 6 m material length)
Components




Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Folding & bending (bent parts)Forming | – | 6 m | – | Individual part manufacturing | Aluminium, Steel, Stainless steel |
| Cutting & sawing (panel shears)Machining | adjustable to one tenth of a millimetre precision | 6 m | – | – | Aluminium, Steel, Stainless steel |
| WeldingJoining | – | – | – | – | Aluminium, Steel, Stainless steel |
| Weld seam dressingSurface | – | – | – | – | Aluminium |
| Punching (holes)Forming | – | – | – | – | Aluminium, Steel, Stainless steel |
| DrillingMachining | – | – | – | – | Aluminium, Steel, Stainless steel |
| Powder coating (via partner companies)Surface | – | – | – | – | Aluminium, Steel, Stainless steel |
| Anodizing (subsequently, via partner)Surface | – | – | – | – | Aluminium |
| Wet paint finishing (via partner)Surface | – | – | – | – | Aluminium, Steel, Stainless steel |
| Stud weldingJoining | – | – | – | – | Aluminium, Steel, Stainless steel |
| Consulting / planning through to executionEngineering | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Press brake | LVD | 2 | Folding length 4 to 6 metres | – | Langerwehe |
| Panel shear | LVD | 2 | Cutting up to 6 metres material length | – | Langerwehe |
Additional services
Quality
Consistent quality is ensured, among other things, by sourcing the base material from Austria and Germany as well as machines that can be precisely adjusted (to 0.1 mm).
| Evidence | Langerwehe |
|---|---|
| Pickup at the works by appointment |
History
- frühe 1990er
Foundation of Alu Maric GmbH by the founder as a family business; over 35 years of aluminium processing between Cologne and Aachen.
- 2018-09
Benjamin Kleinen becomes the new managing director of Alu Maric GmbH.
Renaming of Alu Maric GmbH to alu EXPERTEN GmbH.