
KÖCO manufactures stud welding machines, welding guns and welding studs for industrial site use and continuous operation.
Köster & Co. GmbH
New on Amplifa
About KÖCO
KÖCO (Köster & Co. GmbH) is a manufacturer in the field of stud welding technology. The company produces, modifies and develops welding studs of all kinds as well as stud welding equipment and stud welding guns for a wide range of applications, even under heavy use. With the ELOTOP + series, KÖCO offers a new generation of stud welding machines that combines robustness and reliability with high duty cycle, constant current control and modern microprocessor control for tough construction site use and continuous operation – even in adverse outdoor temperatures and over long cable runs. The CONTROL KE series guns cover a broad spectrum of stud diameters. The portfolio is complemented by the StudCalc Pro design software for steel built-in components with welded-on KÖCO headed studs as well as services such as training, maintenance, calibration, repairs and loaner units. KÖCO sees itself as a consultant and optimizer for stud welding processes and is also deployed directly on site at the customer.
- Processes
- Stud welding (stud welding technology), Headed stud welding (welded-on KÖCO headed studs for steel built-in components), Training and seminars, Maintenance, Calibration, Repair, Loaner units, Warranty extension (60 months)
- Materials
- Welding studs (steel), Stud welding, Headed stud welding
- Industries
- Stud welding technology, Steel construction, Industrial manufacturing
- 01
Development and production of stud welding machines
- 02
Manufacture of welding guns
- 03
Production of welding studs
- 04
Sales and consulting
- 05
Training and seminars
- 06
Maintenance, calibration and repair
Products & Processes
Welding studs (steel)
KÖCO produces, modifies and develops welding studs of all kinds, including welded-on headed studs in steel built-in components.
Stud welding
Stud welding processes with equipment from the ELOTOP + series for consistently high-quality welding results at high duty cycle.
Headed stud welding
Welded-on KÖCO headed studs for steel built-in components in accordance with current design rules.
Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Stud welding (stud welding technology)Joining | – | – | – | – | Stahl |
| Headed stud welding (welded-on KÖCO headed studs for steel built-in components)Joining | – | – | – | – | Stahl |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Stud welding machine ELOTOP + Grizzly | KÖCO ELOTOP + Grizzly | – | – | – | – |
| Stud welding machine ELOTOP + Tiger | KÖCO ELOTOP + Tiger | – | – | – | – |
| Stud welding machine ELOTOP + Fox | KÖCO ELOTOP + Fox | – | – | – | – |
| Stud welding machine ELOTOP + Racoon | KÖCO ELOTOP + Racoon | – | – | – | – |
| Stud welding gun | KÖCO CONTROL KE 22 | – | – | – | – |
| Stud welding gun | KÖCO CONTROL KE 26 | – | – | – | – |
Additional services