Manufacture and repair of drilling tools as well as contract manufacturing in CNC, friction welding and GMAW welding for geothermal energy, well construction, civil engineering and mining.
B.u.G. Bohr- und Gesteinswerkzeuge GmbH
Castrop-RauxelNew on Amplifa
About us
B.u.G. Bohr- und Gesteinswerkzeuge GmbH is a company based in Castrop-Rauxel that emerged in 1979 from the turning shop department of Härterei Bochum. The company manufactures drill rods and casing pipes, hollow and dry augers with armoured auger flights, drill bits for dry and flushing drilling methods, and drilling drives for excavators from 0.75 to 8 tonnes. In addition, a range of around 15,000 items of machine parts and drilling accessories is offered, including flanges, adapters and connecting elements, as well as fishing tools for drill string recovery. Contract services include friction welding, GMAW welding and CNC one-off production; a design team develops new constructions according to customer requirements. Manufacturing is based on friction welding technology since 1976, CNC turning and milling, and induction annealing for seam post-treatment. Customers are found in the geothermal energy, well construction, civil engineering and mining sectors. The company is based in Castrop-Rauxel in the Ruhr area, where it operates production and warehousing with a high-bay warehouse and an additional storage hall.
- Site
- Castrop-Rauxel
- Processes
- Manufacture of drill rods/casing pipes, Manufacture of augers (hollow augers, dry augers), armoured auger flights, Manufacture of drill bits for dry or flushing drilling methods, Manufacture of drilling drives for excavators 0.75 to 8t, torque range 191 – 8152Nm, Machine parts & drilling accessories (flanges, adapters, connecting elements, 15,000 items), Fishing tools / drill string recovery (single- and multiple-use), GMAW welding (contract work), Friction welding (contract work)
- Materials
- Friction welding, GMAW welding, Induction annealing, CNC turning and milling
- Founded
- 1979
- Industries
- Geothermal energy, Well construction, Civil engineering, Mining
- 01
Design
- 02
CNC machining
- 03
Friction welding
- 04
GMAW welding
- 05
Induction annealing
- 06
Storage & shipping
Processes & Materials
Friction welding
Joining process for drill rods and casing pipes; since 2020 PLC-supported with oriented friction welding.
GMAW welding
Contract welding work as well as manufacture and repair of drilling accessories.
Induction annealing
Seam post-treatment after friction welding with a double-head induction annealing system since 2007.
CNC turning and milling
One-off production on CNC lathes (Boehringer, Mori Seiki, Seiger) and a vertical machining center (Akira Seiki).
Locations
Castrop-Rauxel
DEHeadquarters, production and warehouse
- DMG Mori CNC turn-mill center (double-head technology)
- Seiger cycle lathe
- Mori Seiki CNC lathe
- Akira Seiki CNC vertical machining center
- Friction welding system (PLC-supported, oriented)
- Double-head induction annealing system
- High-bay warehouse
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of drill rods/casing pipesJoining | – | – | – | – | – |
| Manufacture of augers (hollow augers, dry augers), armoured auger flightsJoining | – | – | – | – | – |
| Manufacture of drill bits for dry or flushing drilling methodsJoining | – | – | – | – | – |
| Manufacture of drilling drives for excavators 0.75 to 8t, torque range 191 – 8152NmJoining | – | – | – | – | – |
| Machine parts & drilling accessories (flanges, adapters, connecting elements, 15,000 items)Joining | – | – | – | – | – |
| Fishing tools / drill string recovery (single- and multiple-use)Joining | – | – | – | – | – |
| GMAW welding (contract work)Joining | – | – | – | – | – |
| Friction welding (contract work)Joining | – | – | – | – | – |
| CNC one-off production (contract work)Machining | – | – | – | – | – |
| New constructions by the design teamEngineering | – | – | – | – | – |
| Repair of drilling accessoriesJoining | – | – | – | – | – |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC turn-mill center with double-head technology | DMG MORI | 1 | – | – | Castrop-Rauxel |
| Cycle lathe | Seiger | – | – | – | Castrop-Rauxel |
| CNC lathe | Mori Seiki | – | – | – | Castrop-Rauxel |
| CNC vertical machining center (milling) | Akira Seiki | 1 | – | 2013 | Castrop-Rauxel |
| Double-head induction annealing system | – | 1 | – | 2007 | Castrop-Rauxel |
| Induction annealing system | – | 1 | – | 1998 | Castrop-Rauxel |
| Friction welding system (PLC-supported, oriented friction welding) | – | 1 | – | 2020 | Castrop-Rauxel |
| CNC lathe | Boehringer | – | – | 1981 | Castrop-Rauxel |
Additional services
History
- 1979
Founded from the turning shop department of Härterei Bochum by Werner Deus, with friction welding technology since 1976.
- 1981
Entry into CNC machining with a Boehringer CNC lathe.
- 1986
Expansion of the CNC machine park with another Boehringer CNC lathe.
- 1990
Purchase of land for a new site and construction of a new production hall until June 1991.
- 1991
Relocation to Castrop-Rauxel; following the death of Werner Deus, Bernhard Schülken becomes Managing Director.
- 1998
Purchase of an induction annealing system; conversion of friction weld seam post-treatment to induction annealing.
- 1999
Bernd Skrzypczak becomes Managing Director; Bernhard Schülken retires.
- 2003
Paul Hegemann becomes an additional Managing Director.
- 2007
Capacity expansion through the purchase of a double-head induction annealing system.
- 2013
Expansion of CNC production with a vertical machining center from Akira Seiki.
- 2016
Retirement of Managing Director Bernd Skrzypczak.
- 2019
Markus Weber becomes an additional Managing Director.
- 2020
Modernization of the friction welding system; introduction of oriented friction welding.
- 2022
Construction of a high-bay warehouse and leasing of a storage hall.
- 2023
Paul Hegemann retires; Stefan Weber and Sascha Lahnstein become Managing Directors; order placed for a DMG Mori CNC turn-mill center (delivery 2024).