
Mechanical maintenance, steel and plant construction as well as industrial relocations for industrial plants and machinery.

BW Service AG
Utzenstorf (headquarters) · Illnau-Effretikon · SurseeNew on Amplifa
About BW Service AG
BW Service AG (BWS) is a Swiss service company for mechanical and industrial maintenance with headquarters in Utzenstorf and branches in Illnau-Effretikon and Sursee. With more than 50 skilled professionals, the company services machinery and production facilities throughout Switzerland – from inspection, maintenance and repair through predictive maintenance and vibration analysis to major overhauls, pump and gearbox service. In addition, BWS offers engineering and 3D-CAD design, steel and apparatus construction, pipework in steel and stainless steel, as well as assembly, disassembly and industrial relocations of complete production lines. One-offs and small series are manufactured – from thin sheet metal to machine frames weighing several tonnes, tanks, enclosures, boilers and special parts – mainly from steel, stainless steel, chrome steel and aluminium. The company is a supplier and partner for industries such as food and beverage, cement and concrete plants, paper and steel, energy and combustion plants as well as chemicals and pharmaceuticals. An on-call emergency service is available around the clock, 365 days a year. Since 2023, BW Service AG has been part of Hanseatic Power Service GmbH (HPS-Group, Hamburg).
- Site
- Utzenstorf
- Processes
- Plant service (maintenance and servicing, inspection, repairs, predictive, Manufacture of spare parts and custom fabrications, Apparatus and plant construction (design and manufacture of tanks, enclosures, frames,, Processing of thin sheet metal up to machine frames weighing several tonnes, Pipework in steel and stainless/chrome steel, welded or pressed, incl., Welding work by certified welders (service center or on customer site), Structural steel construction (platforms, access ways, industrial railings, staircases, bridges,, Metal construction (metal stairs, railings, columns, metal facades and cladding, canopies,
- Materials
- Steel, Stainless steel, Chrome steel, Aluminium, Inox, Plastic, Wood, Glass
- Certificates
- ISO 9001, ISO 14001, ISO 45001
- Employees
- 50+
- 01
3D-CAD design and engineering
- 02
Material procurement
- 03
Manufacturing in the metalworking shop (steel/apparatus construction)
- 04
Pipework and welding work
- 05
Transport / installation
- 06
Assembly and alignment with measuring equipment
- 07
Commissioning
- 08
Maintenance, servicing and on-call emergency service
Materials & Processes
Steel
For steel structures, machine frames, platforms and industrial hall constructions.
Stainless steel / chrome steel
Corrosion-resistant fabrication for tanks, enclosures and special parts for the food, chemical and pharmaceutical industries.
Chromium-nickel steel
20-mm base plates as substructures for machines in production lines.
Aluminium
For constructions and fabrications requiring lightweight and corrosion-resistant materials.
Inox
Used in structural steel and metal construction for robust constructions.
Plastic / Glass / Wood
Processed in steel and metal construction for enclosures, cladding and special constructions.
Wear-resistant materials
Special pipe bends for abrasive conveyed media in the cement industry.
Locations

Utzenstorf
CHHeadquarters with service center, metalworking shop and manufacturing
- Part weight / size
- up to several tonnes (machine frames, structural steel)
- Lot size
- One-off to small series
- Materials
- Steel, stainless steel, chrome steel, aluminium
- Tools and manufacturing capabilities of the design and apparatus metalworking shop
- simatherm induction heaters (IH 025–IH 210, VOLCANO, Hot Plate)
- Flexijet measuring system for dimensional measurements
Illnau-Effretikon
CHBranch for the Zurich region
Sursee
CHBranch for the Central Switzerland region
Components & Projects






Inside the production






Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Plant service (maintenance and servicing, inspection, repairs, predictiveAssembly | – | – | – | – | – |
| Manufacture of spare parts and custom fabricationsMachining | – | – | – | – | Steel, Stainless steel, Chrome steel, Aluminium |
| Apparatus and plant construction (design and manufacture of tanks, enclosures, frames,Engineering | – | – | several tonnes | One-off – Small series | Steel, Stainless steel, Chrome steel, Aluminium |
| Processing of thin sheet metal up to machine frames weighing several tonnesForming | – | – | several tonnes | – | Steel, Stainless steel, Chrome steel, Aluminium |
| Pipework in steel and stainless/chrome steel, welded or pressed, incl.Joining | – | – | – | DN25 – DN200 (project evidence) | Steel, Stainless steel, Chrome steel, wear-resistant materials |
| Welding work by certified welders (service center or on customer site)Joining | – | – | – | – | Steel, Stainless steel, Chrome steel |
| Structural steel construction (platforms, access ways, industrial railings, staircases, bridges,Joining | – | – | – | – | Steel, Inox, Aluminium, Glass, Wood, Plastic |
| Metal construction (metal stairs, railings, columns, metal facades and cladding, canopies,Joining | – | – | – | – | Steel, Stainless steel, Aluminium, Wood, Glass |
| Assembly and disassembly of production facilities and machinery incl. alignment with modernAssembly | demanding installation tolerances (no value stated) | – | – | – | – |
| Machine relocation / industrial relocationsAssembly | – | – | – | – | – |
| Pump service (among others overhaul of a boiler feed pump)Assembly | – | – | – | – | – |
| Gearbox serviceAssembly | – | – | – | – | – |
| Machine maintenanceAssembly | – | – | – | – | – |
| 3D-CAD design (3D models, manufacturing drawings, dimensional measurements with Flexijet measuringEngineering | – | – | – | – | – |
| Engineering / technical design and planningEngineering | – | – | – | – | – |
| Drive conversion / overhaul of pumps and drives (e.g. manufacture of auxiliary frames,Assembly | – | – | 2'900 kg (motor weight, project | – | – |
| Manufacture and assembly of steel constructions (project evidence: approx. 20 t structural steelJoining | – | – | approx. 20 tonnes (project evidence) | – | Steel, wear-resistant materials |
| Installation and mechanical assembly of production lines incl. structural steel, base platesAssembly | – | – | 20 tonnes (heaviest single component, | – | Chromium-nickel steel |
| Overhaul and conversion of a crusher plant (rotor replacement, crusher housing refurbishment,Assembly | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Measuring system for dimensional measurements | Flexijet | – | – | – | – |
| Induction heaters for rolling bearings | simatec (simatherm) IH 025, IH 045, IH 070, IH 090, IH 210, VOLCANO, Hot Plate HPS/HPL | – | Workpieces up to 300 kg; bore diameter 20–400 mm depending on model | – | Utzenstorf (service center) |
| Truck-mounted crane | 80 mt truck-mounted crane | 1 | – | – | – |
Additional services
Reference customers
Quality & Certification
BW Service AG is certified to ISO 9001 (quality), ISO 14001 (environment) and ISO 45001 (occupational health and safety). Welding work is carried out by certified welders; assemblies are performed with modern measuring equipment to meet demanding installation tolerances.
| Evidence | Utzenstorf | Illnau-Effretikon | Sursee |
|---|---|---|---|
| ISO 9001 | |||
| ISO 14001 | |||
| ISO 45001 |
History
- ~1995
Founding era: The company refers to over 30 years of experience in mechanical maintenance ("For three decades").
- 2022
Order from Lindt & Sprüngli: Installation and mechanical assembly of two production lines at the Olten plant, completed in 2023.
- 2023
BW Service AG becomes part of Hanseatic Power Service GmbH (HPS-Group, Hamburg).
- 2025/2026
30th anniversary of BW Service AG with current and former employees.