SRI conducts the engineering, fabrication and inspection of equipment for the highly demanding pharmaceutical chemistry industry. This includes equipment such as vessels, reactors and mixing vessels, which we supply both individually as well as system-ready with agitators, appendages and skid-mounted.

High demands are the standard

The industry demands maximum cleanability and a high-quality finish, both internally and externally. Due to our clever designs, dead spots are avoided and full washability of the internal surfaces is guaranteed. Additionally, all our devices are extensively tested for critical aspects such as drainability, finish and washability. For maximum washability we optionally perform spray ball testing. We have developed a dedicated spray ball test installation with adjustable pressure and flow according to our customer’s requirements. For the pharmaceutical-chemical industry, we often use higher alloyed stainless steels, depending on the process involved (316L, 904L and Al6Xn). All materials must meet high requirements and be absolutely pore-free.

Automated processes

SRI measures all sheet finishes with a pethometer (roughness tester), which is included in our manufacturing report. Our engineers are highly experienced with FDA and ASME BPE requirements. For optimum internal finishing we have developed automated cutting systems, which can be followed by a number of additional (manual) grinding procedures. We deliver our end products with a complete manufacturing report (MR) as standard.

Concept and engineering

Right from the concept phase of any project, SRI is heavily involved in the design of devices in order to create the best solution in cooperation with our clients. Our main challenge is to use all possibilities within the assigned design codes and customer specifications. We also take care of the entire approval process. As a result of our experience we often manage to surpass our clients' expectations with well-thought-out...

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Development and realization

Our own expert team supervises the entire development and realization process, for which we work out a detailed production planning. All of this takes place under supervision of our QC department. Manufacturing starts as soon as the final drawings package is ready and all main materials have been...

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Construction and installation

At SRI we aim for integral, trouble-free project realization for our customers. We offer reliable solutions that require minimal maintenance. In order to fully control quality and planning we carry out the entire process of construction and installation on location under our own management. Our facilities cover an approximate 25,000 m2. With our flexible work methods SRI is of great added value to our...

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Service and maintenance

In addition to quality, continuity is of great importance in the industries our clients operate in. Our service department is always standby to solve malfunctions or repair damage. We manage to continuously minimize failure cost through scheduled maintenance, smart technological inspections and preventive replacement of wear...

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Pharmaceutical chemistry

Within the pharmaceutical chemistry industry SRI is a respected manufacturer of reactors. Crucial for these type of pressure vessels is their internal and external finish. Usually we opt for internal electropolishing for reasons of cleanability and zero product adhesion. In our designs dead spots won't be foud. Also, we often build our pharmaceutical chemistry vessels with a heating mantle (or half pipe coil) and insulated...

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An excellent worldwide reputation due to highly reliable process industry solutions


Through years of experience, backed up by continuous innovation in engineering, manufacturing techniques, quality control and organization, SRI is certified for PED/CE Module H/H1, ASME U&R Stamp, SELO en ISO 9001. We prove to be a reliable partner for many, often recurring customers worldwide.


From the small town of Veenwouden, The Netherlands, SRI has evolved into a global manufacturer of process industry equipment. We are proud of our roots as well as our worldwide status. Please feel free to ask for information about our engineering and production methods. Also, please contact us if you’d like to cooperate with us.