
Sheet metal processing, certified welding shop and special machinery construction for agriculture and industry since 1898.

J. Gerdemann GmbH & Co. KG
Greven · Königstraße 109-111, 48268 GrevenNew on Amplifa
About J. Gerdemann GmbH & Co. KG
J. Gerdemann GmbH & Co. KG is an owner-managed medium-sized company in Greven with around 20 employees, founded in 1898 as a forge and locksmithery by Josef Gerdemann. Today its mechanical engineering portfolio covers sheet metal processing with plasma cutting, a bending operation, manual and robotic welding work, silo system and hopper manufacturing, barn equipment, container and tank construction as well as operating and work equipment. In special machinery construction, individual machines and components are created from concept to ready-to-install assembly, developed jointly with the customer. Production takes place in one-off manufacture and series from steel, stainless steel, aluminium and weather-resistant COR-TEN steel, including galvanizing, painting and powder coating. Customers come from agriculture, agricultural machinery and feed industry, plant engineering, automotive suppliers, research institutes and seed breeding companies. In addition to contract manufacturing, the company operates an agricultural machinery workshop, an agricultural machinery dealership with spare parts and used machinery business, as well as on-site assembly and service, throughout Europe.
- Site
- Greven
- Processes
- Sheet metal processing / metal processing, Plasma cutting, Bending operation, Robotic welding (certified welding shop DIN 18800-7 Class C), Manual welding and metalworking work of all kinds, Surface coating (galvanizing, painting, powder coating), Silo system and hopper manufacturing (bulk goods), Barn equipment manufacturing (neck rails, feeding grids, sliding grids, made-to-measure partition
- Materials
- Steel / structural steel, Stainless steel, Aluminium, COR-TEN steel (weather-resistant), Structural steel, COR-TEN steel
- Certificates
- Manufacturer qualification for welding of steel structures DIN 18800-7:2002-09, DIN 18800-7:2002-09 Class C (manufacturer qualification for welding of steel
- Founded
- 1898
- Employees
- 20
- Industries
- Agriculture, Agricultural machinery and commercial vehicle industry, Feed industry, Automotive suppliers, Research institutes, Seed breeding companies
- 01
Design and development
- 02
Sheet metal stock / plasma cutting
- 03
Bending operation
- 04
Welding (robotic and manual)
- 05
Surface finishing (galvanizing, painting, powder coating)
- 06
Assembly / on-site assembly
- 07
After-sales service and repair
Materials & Processes
Structural steel
Base material for sheet metal processing, plasma cutting, silos, barn equipment and steel structures.
Stainless steel
For hygiene requirements in tank and container construction as well as in the feed industry.
Aluminium
Lightweight-oriented sheet and cut parts, machined in plasma cutting as a conductive material.
COR-TEN steel
Weather-resistant structural steel for gate and fence construction, balconies and custom outdoor canopies.
Locations

Greven
DEHeadquarters, workshop and production
- Lot size
- One-off manufacture to series
- Materials
- Steel, stainless steel, aluminium, COR-TEN steel
- Plasma cutting system / plasma cutting technology
- Welding robots (parts up to 2.50 m length)
- Bending operation
- Manual welding and metalworking work
Components & Products





Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Sheet metal processing / metal processingMachining | – | – | – | Series | Steel, Aluminium, Stainless steel |
| Plasma cuttingMachining | – | – | – | One-off manufacture and series | Structural steel, Stainless steel, Aluminium (all conductive materials) |
| Bending operationForming | – | – | – | – | – |
| Robotic welding (certified welding shop DIN 18800-7 Class C)Joining | – | 2.50 m (parts for welding robots) | – | small/medium lot sizes up to large | Steel |
| Manual welding and metalworking work of all kindsJoining | – | – | – | – | Steel |
| Surface coating (galvanizing, painting, powder coating)Surface | – | – | – | – | Steel |
| Silo system and hopper manufacturing (bulk goods)Sheet metal processing | – | – | – | Series and intermediate sizes on request | Steel |
| Barn equipment manufacturing (neck rails, feeding grids, sliding grids, made-to-measure partitionForming | – | – | – | – | Steel |
| Special machinery construction (special machines, ready-to-install assemblies)Assembly | – | – | – | – | – |
| Tank and container construction (carcass containers, transport boxes, catch trays)Sheet metal processing | – | – | – | – | Steel |
| Operating and work equipment manufacturing (ladders, stairs, work platforms, bunkers, transportSheet metal processing | – | – | – | – | – |
| Development / design jointly with the customerEngineering | – | – | – | – | – |
| On-site assembly (on request)Assembly | – | – | – | – | – |
| Gate and fence construction and custom canopies (balconies, stairs)Sheet metal processing | – | – | – | – | COR-TEN steel, galvanized steel |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Welding robot | – | – | Parts with lengths up to 2.50 m | – | Greven |
| Plasma cutting system / plasma cutting technology | – | – | – | – | Greven |
Additional services
Reference customers
Quality & Certified Welding Shop
As a certified welding shop, the company holds the manufacturer qualification for welding steel structures in accordance with DIN 18800-7:2002-09 (Class C). All welding work is performed by qualified and trained skilled workers; engineers and technicians also hold the manufacturer qualification.
| Evidence | Greven |
|---|---|
| DIN 18800-7:2002-09 Class C (manufacturer qualification for welding of steel |
History
- 1898
Company founded by Josef Gerdemann as a forge and locksmithery with repairs of agricultural machinery and horse-drawn carts.
Transformation into a modern company with the focus areas of agricultural machinery workshop and mechanical engineering.