Planning, manufacturing and installation of thermal systems and industrial piping made of stainless steel, steel and plastics
Despraz SA
Granges-près-Marnand (canton of Vaud), SwitzerlandNew on Amplifa
About Despraz SA
Despraz SA is a Swiss family business founded in 1988, headquartered in Granges-près-Marnand in the canton of Vaud. On approximately 3500 m² (1700 m² pre-fabrication, 1000 m² warehouse, 600 m² offices, 400 m² passivation workshop), more than 100 employees plan, manufacture and install piping systems and thermal systems for industry. The service portfolio covers thermal piping (black and clean steam in accordance with the Pressure Equipment Directive), industrial piping, fine piping with orbital welding and ultrapure water, drinking water and wastewater networks as well as district heating/UVTD systems. Materials include stainless steel (including 316L), steel, engineering plastics (PVDF, PPn, PP-H, PE) and specific alloys. In addition, the company offers technical planning, 3D modelling, pickling and passivation of stainless steel components, maintenance and the rental of mobile steam boiler plants. Customers come from the pharmaceutical, food, chemical, healthcare, water treatment, energy and microelectronics sectors, mainly in French-speaking Switzerland from Bern to Geneva.
- Site
- Granges-près-Marnand, Switzerland
- Processes
- Technical planning / Étude technique, Dessin technique (Technical drawing), Mise en plans d'exécution (Detailed design drawings), 3D modelling / Modélisation 3D, Passivation / Passivation, Pickling, Thermal piping (steam lines), Industrial piping
- Materials
- Stainless steel 316L, Stainless steel / Inox, Steel, PVDF, PPn (natural polypropylene), PP-H, PE, Specific alloys
- Certificates
- PED 2014/68/EU (Pressure Equipment Directive), Certified leak tests, Full traceability of weld seams
- Founded
- 1988
- Employees
- 100+
- Industries
- Pharmaceutical industry, Food industry, Chemical and petrochemical, Healthcare (hospitals and laboratories), Water treatment, Energy
- 01
Technical planning (dimensioning, heat balances, P&ID)
- 02
3D modelling and detailed design
- 03
Pre-fabrication
- 04
Assembly and installation
- 05
Passivation/pickling
- 06
Testing (pressure and leak tests)
- 07
Maintenance & troubleshooting
Materials & Processes
Stainless steel 316L
For ultrapure water lines and fine piping with orbital weld seams and electropolished surfaces.
Stainless steel
Base material for industrial piping, steam systems and drinking water installations.
Steel
For thermal piping, compressed air networks and pre-insulated district heating pipes.
PVDF
High-purity thermoplastic for chemically demanding and ultra-pure applications, IR-welded.
PPn (natural polypropylene)
Plastic piping material for chemical and high-purity environments.
PP-H
Polypropylene homopolymer for thermoplastic piping systems (IR/VNF welding).
PE
Polyethylene for thermoplastic piping, including PE jacket of pre-insulated district heating pipes.
Specific alloys
Special alloys for special process media in industrial piping.
Locations
Granges-près-Marnand
CHHeadquarters with pre-fabrication, warehouse, offices and passivation workshop
- Materials
- Stainless steel, steel, PVDF, PPn, PP-H, PE
- Pre-fabrication hall 1700 m²
- Warehouse 1000 m²
- Pickling and passivation workshop (tank 7000 × 1400 × 1100 mm, crane 3 t, rainwater tank 57,000 L)
- CAD systems: Autodesk Revit, Inventor, AutoCAD Plant 3D, Navisworks
Systems & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Technical planning / Étude techniqueEngineering | – | – | – | – | – |
| Dessin technique (Technical drawing)Engineering | – | – | – | – | – |
| Mise en plans d'exécution (Detailed design drawings)Engineering | – | – | – | – | – |
| 3D modelling / Modélisation 3DEngineering | – | – | – | – | – |
| Passivation / PassivationSurface | – | 7000 mm (tank) × 1400 mm × 1100 mm | 3000 kg (crane lifting capacity) | – | Stainless steel, Inox |
| PicklingSurface | – | 7000 mm (tank) × 1400 mm × 1100 mm | 3000 kg (crane lifting capacity) | – | Stainless steel |
| Thermal piping (steam lines)Joining | – | – | – | – | Steel, Stainless steel |
| Industrial pipingJoining | – | – | – | – | Stainless steel, Steel, engineering plastic, specific alloys |
| Fine pipingJoining | – | – | – | – | Stainless steel 316L, PVDF, PPn, PP-H, PE |
| Orbital weldingJoining | – | – | – | – | Stainless steel 316L |
| IR welding (infrared welding)Joining | – | – | – | – | PVDF, PP-H, PE |
| VNF welding (on-the-move welding)Joining | – | – | – | – | Thermoplastics (PVDF, PP), PE |
| Drinking water & wastewater pipingJoining | – | – | – | – | Stainless steel, coated steel |
| District heating networks / pre-insulated pipesJoining | – | – | – | – | Steel, Stainless steel, polyurethane insulation, PE jacket |
| Préfabrication (pre-fabrication)Joining | – | – | – | – | – |
| Maintenance & troubleshootingAssembly | – | – | – | – | – |
| Assembly of piping systems and thermal systemsAssembly | – | – | – | – | – |
| Mobile boiler plants / Chaufferies mobiles (steam generators, rental)Assembly | – | – | – | – | – |
| Cleanroom installationAssembly | – | – | – | – | – |
| Pressure tests (PED compliance)Testing | – | – | – | – | – |
| Leak tests (certified)Testing | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Pickling and passivation workshop (treatment area) | Despraz SA (in-house system) | 1 | 24 × 12 m area, tank 7000 × 1400 × 1100 mm, crane 3 t, rainwater tank 57,000 L | – | Granges-près-Marnand, canton of Vaud |
| Crane in passivation workshop | – | 1 | – | – | Granges-près-Marnand |
| Pre-fabrication hall | – | 1 | 1700 m² | – | Granges-près-Marnand |
| Warehouse area | – | 1 | 1000 m² | – | Granges-près-Marnand |
| Mobile boiler plant with steam generator | – | – | – | – | – |
| CAD software: Autodesk Revit, Inventor, AutoCAD Plant 3D, Navisworks | Autodesk | – | – | – | – |
Additional services
Quality & Compliance
Compliance with the European Pressure Equipment Directive (PED 2014/68/EU) with qualified weld seams, traceable documentation as well as pressure tests with inspection bodies and certified leak tests.
| Evidence | Granges-près-Marnand |
|---|---|
| PED 2014/68/EU (Pressure Equipment Directive) | |
| Certified leak tests | |
| Full traceability of weld seams |
History
- 1988
Foundation of Despraz SA as a Swiss family business, specialised in industrial thermal systems, energy production and transfer as well as industrial piping.