Whether it concerns the delivery and installation of a new steam boiler, renting a boiler or performing maintenance on your steam boiler, Kuiper & Zonen has all the mandatory and necessary certifications to ensure this runs smoothly. All requirements are also met during the production of your steam boiler. Our steam boiler is produced according to the latest design codes PED and therefore supplied with CE marking. 

Our certificates

Kuiper en Zonen is certified according to the following standards, among others:

  • VCA** (Safety, Health and Environment)
  • ISO 9001-2015 (Quality)
  • SCIOS (certification scheme for maintenance and inspections of combustion plants)
  • Lloyd's recognized overhaul company (overhaul of fittings and safety devices including inspection according to sheet T0103 pressurized equipment)
  • Re-certification according to NEN-EN 10204 (transfer of markings from materials – metal products)


The management endorses the importance of these certifications through the policy statement with regard to quality, health and safety and the environment.

KAM policy →

The oldest steam boiler company in the Netherlands

Kuiper en Zonen is a family business and has pure craftsmanship

The importance of innovation

Kuiper & Zonen attaches great value to innovation. We are always aware of the latest developments in our field. It is precisely the all-round knowledge and expertise that forms the beating heart of Kuiper en Zonen. It is not without reason that we have the complete package of manufacture, overhaul, rental, delivery, maintenance and assembly of steam boilers and boiler accessories under one roof.

Free custom advice?

Receive tailor-made advice from one of our experts without obligation. Call us +0318(63)20 92  or fill in the form below.

Cooper and Sons Team

Our latest projects

Fuite Genemuiden expansion

We have realized an extension of the current steam boiler installation for a large animal feed producer in Genemuiden. The steam capacity of the current steam installation

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