constructing pipes

Design, engineering and on-site repairs

As well as being experts in producing machinery for the cocoa and chocolate industries, Royal Duyvis Wiener specialises in design, engineering and on-site repairs. We share our expertise and use it to help solve any issues your company may have.


Bespoke Solutions

We are experts at increasing the efficiency of chocolate production machinery and its associated processes. In keeping with a company of our size and history we have our own engineering team, whose members are highly skilled technicians. Their expertise covers mechanical, hydraulic and electrical skills and draw upon experience with a wide range of customers and companies.

As you might expect, we have some of the most modern equipment in the industry and subject it to rigorous testing.

In addition we offer solutions for:

  • Project management.
  • Engineering Construction Machining.
  • Maintenance & Repair Piping.


Project management

Royal Duyvis Wiener B.V. can take responsibility for entire projects and deal with all matters arising, without distracting them from your day-to-day business. Naturally, our project managers are highly experienced leaders with an impressive range of skills and experience. They take responsibility of the entire process, from day one to the project’s completion. As such, your point of contact remains the same from start to finish. Your project manager will always be looking for ways to execute the project as efficiently as possible and will share these observations with you, whatever the subject area.



At the heart of Royal Duyvis Wiener is the company’s engineering department, which maintains chocolate production machinery and cocoa processing machinery. The engineering team also provides technical expertise, tailored to each customer’s specific requirements. We are always looking for the best solutions to issues our customers might have with their chocolate production machinery or cocoa processing machinery. This is done in accordance with the desired outcome of the customer.



Royal Duyvis Wiener can even assist you with construction, in steel and stainless steel. Welding is carried out to the highest standard, by qualified welders, in accordance with EN-ISO 3834-2 Welding.



We are able to offer a range of CNC machining procedures according to your requirements including milling, drilling, and grinding. Available dimensions can be found in our machines list.


Maintenance and repairs

Maintenance and repair have been at the heart of Royal Duyvis Wiener’s operations for over 125 years. Both chocolate production machinery and cocoa processing machinery require regular maintenance, most of which can be done on-site. Our skilled technicians use a range of special tools, as well as hoisting blocks and configuration equipment. We are also able to offer a rapid response to emergency or unscheduled repair requirements (jobbing).



Royal Duyvis Wiener has a skilled crane staff at your disposal, who are also able to offer crane maintenance.



We also specialise in piping and pipework installations. Our experience is centered on cocoa and chocolate production machinery, but also extends to beverages, chemicals, and pharmaceuticals. We specialise in building everything from special components to entire turnkey projects. We use a range of alloys including Duplex, Monel, titanium, and hasteloy. We also employ carbon steel piping sytems.


The entire project or partial solutions

We are able to assist you with new projects as well as process modifications, bearing in mind your preferences and spatial requirements. Whether it involves advice for: piping applications, solution design, project management support, complete project management, commissioning, training, CE certification, or complete maintenance plans we can work with you to overcome all challenges.

Quality is a core principle at Royal Duyvis Wiener. As a certified company, we aim to provide the very best services in accordance with the very latest quality requirements. Our technicians, fitters, and welders are qualified to comply with the strictest requirements in terms of quality, hygiene, and safety as described in the machine, EHEDG, and HACC P guidelines.


Chocolate production machinery

Royal Duyvis Wiener has many years of specialised knowledge in piping & installations. We have broad experience in just about every sector, which includes the food industry, cocoa, chocolate, beverages, chemicals, and pharmaceuticals. We are specialised in building high-tech processing lines and systems, special components and complete turnkey projects.

Industrial Services

  • Project management
  • Engineering
  • Construction
  • Machining
  • Maintenance & Repair
  • Piping