
Since 1949 · Oldenzaal (NL)
Solutions by
Specialists
Inspection, overhaul, service and modification of valves and steam and pressure installations, on site or in our own workshop. Over 75 years of expertise in valve technology, deployed worldwide by a team of 21 specialists.
International craftsmanship, local commitment
Setting the standard for over 75 years
Poorthuis Industrial Services specialises in the overhaul and maintenance of steam and other pressure installations. Beyond maintenance we overhaul and modify parts in our own machine shop. Saving our clients both time and money.
1949
Founded in Oldenzaal
75+
Years of experience
Worldwide
Deployable on site
ISO 9001
Certified
21
Specialists
Our services
Specialist craftsmanship, end-to-end
From overhaul to mobile service: we keep your installation running safely, efficiently and reliably.
01
Overhaul
Production downtime costs time and money. Our flexible overhaul team gets your production lines operational again, cost-efficiently.
02
Modification
We realise any modification and build specials that fit your specific situation seamlessly. Tested and pressure-proofed to standard.
03
Specialised welding
Products and services for industries that demand welding compliant with the strictest international standards.
04
Machining
A complete machine park for turning, vertical turning, milling, drilling, boring and more. All under one roof in our fully equipped workshop.
Deployable worldwide
Our specialists, wherever you need them
From Oldenzaal we work for power plants, waste incineration, district heating, the food industry, oil & gas and petrochemicals, from Greece and Oman to Saudi Arabia and the United States. Spin the globe and click a location to view a project.
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About Poorthuis
A close-knit team of craftsmen
Poorthuis is known for its specialist team that feels closely involved with the client. Clear communication and good collaboration form the basis of our work. Because our trade falls outside standard training, we train our people internally to become specialists.
Certification & quality
Certified craftsmanship
Alongside the certificates below we are an approved overhaul company for several valve and fittings manufacturers. With our own test equipment for pressure tests and NDT.
NEN-EN-ISO 9001:2015
Quality management
VCA* 2017/6.0
Safety
Material re-marking
Certificate G 0304-20/M016
PRD Katern 3.2 §13
T0103
EN ISO 9712 PT2
Sector A, B and PED
Careers at Poorthuis
Will you be our next specialist?
We train our craftsmen internally. Technical, flexible and ready to travel the world? Then we are looking for you.

Contact
A question, breakdown or project enquiry?
Fill in the form and we will get back to you as soon as possible.
Schelmaatstraat 12, 7575 BD Oldenzaal
+31 541-513 415
info@poorthuis.com

