Development and manufacture of fully electric CNC tube bending machines and integrated production solutions from tube to ready-to-install component
DenglerLang GmbH
Witten · LorschNew on Amplifa
About DenglerLang Tube Tec
DenglerLang GmbH, under the Lang Tube Tec brand, develops and manufactures fully electric CNC-controlled tube bending machines in Witten for complex tube geometries. The company builds machines for mandrel bending, mandrel-free bending, and right-left bending machines for round and rectangular tubes with diameters from 6 to 165 mm and achieves bending radii below 0.8 x D, wall thickness reduction below 20 percent, and ovality below 1 percent. In addition to individual machines, the company supplies integrated production cells and complete solutions that combine feeding, weld seam detection, CNC tube bending, straightening, cutting, deburring, calibrating, and forming into a continuous material flow. Upstream engineering services include project planning, layout creation, robot simulation, 3D bending simulation software, and cycle time calculation. The service portfolio ranges from spare parts supply and maintenance to machine overhauls and control upgrades through to integration into production cells. Customers come from the automotive and vehicle industry, aerospace engineering, shipbuilding, chemical plant and power plant construction, as well as the offshore and furniture industries.
- Site
- Witten
- Processes
- CNC tube bending (mandrel bending, fully electric), Mandrel bending, Draw bending, Free-form bending, Mandrel-free bending, Weld seam detection (integrated in production system), Straightening, Cutting and deburring
- Materials
- Round tubes, Rectangular tubes, Fully electric drive
- Certificates
- ISO 9001:2015, ISO 9001
- Founded
- 1930
- Industries
- Automotive and vehicle industry, Aerospace engineering, Shipbuilding, Chemical plant construction, Power plant construction, Offshore industry
- 01
Project planning and layout creation
- 02
Robot simulation and 3D bending simulation
- 03
Mechanical engineering or assembly of the production cell
- 04
CNC tube bending, straightening, cutting, deburring, calibrating, forming
- 05
Automatic handling and discharging
- 06
Commissioning, maintenance, retrofit and spare parts supply
Processes and Materials
Round tubes
Standard material for mandrel bending, draw bending and free-form bending in the SMALL to STRONG series.
Rectangular tubes
Processed on the CNC-controlled bending machines with different radii and bending directions in one setup.
Fully electric drive
Machine concept with up to 65 percent lower energy consumption compared to hydraulic systems.
Locations
Witten
DEHeadquarters, development and machine manufacturing
- Materials
- Round tubes, rectangular tubes
- Fully electric CNC mandrel bending machine SMALL (20–40 x 3 mm, radius up to 160 mm)
- CNC mandrel bending machine MEDIUM with lifting table (60–100 x 3 mm, radius up to 320 mm)
- CNC mandrel bending machine STRONG (120–165 x 3.5 mm, radius up to 500 mm)
- Right-left tube bending machine ROTATE (20–40 x 3 mm)
- Mandrel-free tube bending machine VERTIKAL (40 x 2 mm, radius up to 500 mm)
- Fully electric tube and profile bending machine as a production cell (6–165 mm)
Lorsch
DELocation
Machines and Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC tube bending (mandrel bending, fully electric)Forming | Bending radii < 0.8 x D; wall thickness reduction < 20 % | – | – | – | Tubes (round and rectangular tubes) |
| Mandrel bendingForming | – | – | – | – | – |
| Draw bendingForming | – | – | – | – | – |
| Free-form bendingForming | – | – | – | – | – |
| Mandrel-free bendingForming | – | – | – | – | – |
| Weld seam detection (integrated in production system)Joining | – | – | – | – | – |
| StraighteningForming | – | – | – | – | – |
| Cutting and deburringMachining | – | – | – | – | – |
| CalibratingForming | – | – | – | – | – |
| FormingForming | – | – | – | – | – |
| Engineering / system project planning incl. robot simulation, 3D layout, cycle time calculationEngineering | – | – | – | – | – |
| Machine overhaul / retrofit / control upgradeAssembly | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Fully electric CNC mandrel bending machine (SMALL series) | Lang Tube Tec SMALL | – | Tube dimension 20–40 x 3 mm, max. bending radius 160 mm | – | Witten |
| Fully electric CNC mandrel bending machine with lifting table (MEDIUM series) | Lang Tube Tec MEDIUM | – | Tube dimension 60–100 x 3 mm, bending radius up to 320 mm | – | Witten |
| Fully electric CNC mandrel bending machine (STRONG series) | Lang Tube Tec STRONG | – | Tube dimension 120–165 x 3.5 mm, bending radius up to 500 mm | – | Witten |
| Fully electric right-left tube bending machine (ROTATE series) | Lang Tube Tec ROTATE | – | Tube dimension 20–40 x 3 mm, bending radius up to 160 mm | – | Witten |
| Mandrel-free tube bending machine (VERTIKAL series) | Lang Tube Tec VERTIKAL | – | Tube dimension 40 x 2 mm, bending radius up to 500 mm | – | Witten |
| Fully electric tube and profile bending machine as a fully automated production cell | DenglerLang Tube Tec | – | Tube diameter 6–165 mm | 2024 | Witten |
Additional services
Quality
The quality management system is certified to DIN EN ISO 9001:2015 by SWISO GmbH (valid until 24.09.2026) and is continuously developed through ongoing process improvements. The bendability of parts is verified in advance using 3D bending simulation software for bendability and collisions.
| Evidence | Witten |
|---|---|
| ISO 9001 |
History
- 1930
Founding of Ludwig Lang GmbH
- 1948
First tube bending machine presented at the Hannover Messe
- 1975
Presentation of the first CNC-controlled tube bending machine
- 1982
Establishment of the Dengler tube bending machines business division
- 2009
Founding of Lang Tube Tec GmbH
- 2018
Merger with Dengler Tube Tec GmbH to form DenglerLang Tube Tec GmbH
- 2023
Re-certification to ISO 9001:2015 by SWISO GmbH
- 2025
Merger with Dengler Engineering GmbH to form DenglerLang GmbH
- 2026
Appearance at Tube Düsseldorf with integrated production solutions