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Advice Development Factory Design

  • For cocoa-, chocolate-, food- and pharmaceutical sector
  • Professional in complete processing installations
  • Innovative and directly applicable solutions
  • Project management
  • Utilities and Process piping department
  • Consultancy & advice


Site supervising

Royal Duyvis Wiener is well known as an innovative constructor of high quality processing equipment. Due to this preferential position, we are also active in consultancy, engineering, and realisation of complete processing installations. In the cocoa, chocolate, food, and pharmaceutical sector in the Netherlands and abroad.

We supply equipment, components, systems, and services for the cocoa, chocolate, mixing, and food sectors. When doing so, we make specific and detailed use of our knowledge of technology and production processes.


Innovative and directly applicable solutions

We create innovative and directly applicable solutions for every aspect of your production process. Socially Responsible Enterprise (SRE) is an important guiding principle in all our activities. An example is that we take direct and detailed account of environmental friendly and energy-saving solutions in all our consultancy and designs. Royal Duyvis Wiener invests in people and provides its employees ample opportunities for growth and development. This forms the basis of our strength when serving all our customers.


Process-engineering department, tailor-made solutions for all your needs

Based on the long lasting expertise and experience we have built up over decades, Royal Duyvis Wiener can support all your individual needs. We can offer supervision, whereby we continuously check the laws and regulations concerning hygienic design, as well as all environmental requirements.


Our Process engineering discipline, offers you a range of quality services

  • Pre-research and consultancy
  • Process design, mass, and energy balancing
  • Engineering and Detail Engineering (PFD’s, P&ID’s)
  • Plans and drawings
  • Formulation of equipment specifications
  • Design of Energy and Product piping from boiler house to packaging or filling
  • Engineering of the entire piping system including jacketed piping
  • Assessment of offers and tenders
  • Procurement selection. E&I engineering
  • Industrial automation
  • Commissioning
  • Starting up and Documentation of Installations
  • Training and education
  • Service & Support (preventive/corrective maintenance)
  • Project management services, efficient framework


Project Management Department

We also invite you to make use of the following cost and time saving services offered by our Project management department:

  • Planning.
  • Cost control.
  • Reporting.
  • Coordination of the various companies involved in a project.
  • Coordination of all relevant Interfaces.


Utilities & Process piping department, from design to delivery

This department focuses on a professional attitude toward the installation of equipment by Royal Duyvis Wiener and other well-known manufacturers. This includes the installation of ancillary single-walled and jacketed piping. In order to serve you even better, we place our craftsmanship and experience in the installation of stainless steel piping and piping of other types of steel at the disposal of our clients. Rely on our know-how in the following fields: new-build, extension, renovation and relocation of process-installations and their maintenance.




Consultancy & advice

Site supervising. Assembly-planning and implementation. Assembly of both part and total projects. The construction of processing components in our own assembly shop. Unit-skid construction in our own assembly shop. Assembly of processing installations abroad. Extension and renovation.


Professional planning

We use our tools and facilities to carry out the assembly. Works are implemented based on management or fixed price. The department works in accordance with a project plan (MS Projects) and/or, if necessary, on the basis of an HSEW plan.


Flexible and dynamic

We pride ourselves on a wide experience of subcontractors and required quality. This is also guaranteed by our internal procedures and the monitoring and/or quality department, which enables us to install or assemble designated brands or special designs.


Professional prefabrication

In association with HACCP, food safety and your production environment it can be essential to have production installations assembled, fitted with cabling, automated, and tested based on prefabrication (module construction). For the design and connection of processing components in terms of piping technology, Royal Duyvis Wiener possesses its own assembly hall in the Netherlands and Germany.



  • Turnkey projects
  • Prefab installations
  • Process components
  • Pilot plants
  • Tailor-made installations
  • Unit-skid construction
  • Optimisation of process systems
  • Relocation of processing installations

Directly afterwards we can be of service to you with: E&I and automation projects for complete plants together with process alterations.


Safety first!

The safety of those involved always comes first. Royal Duyvis Wiener is a VCA**2008/05, NEN-EN-ISO 9001:2008 accredited company. Furthermore, our quality control policy complies with ISO 14001. We also implement an integral QMS Quality Management System.


  • For cocoa-, chocolate-, food- and pharmaceutical sector
  • Professional in complete processing installations
  • Innovative and directly applicable solutions
  • Project management
  • Utilities and Process piping department
  • Consultancy & advice