SRI

What SRI does

SRI (Speciaal Roestvrijstaal Industrie B.V.) is a Dutch manufacturer of stainless steel and exotic alloy pressure equipment and heat exchangers serving regulated process industries. Founded in 1957 in Dokkum and now headquartered in Veenwouden, Netherlands, the company designs and fabricates custom-engineered pressure vessels, columns, reactors, and heat exchangers built to international codes including ASME, PED, EN13445, and TEMA. Its customer base spans chemical, petrochemical, pharmaceutical, biotechnology, food, and new energy sectors. SRI holds multiple international certifications, including ISO 9001 (achieved in 1987, the first in its sector), ASME U and R Stamp (since 1981), PED/CE Module H and H1, SELO for China (renewed 2024), VCA, and OSEI, enabling global project delivery to regulated process-industry end markets.

The company's technical capabilities include welding and fabrication across exotic alloys such as Titanium, Duplex, Super Duplex, Hastelloy, Monel, and Incoloy. Operations are conducted from a 25,000 m² site with 13,000 m² of production space, supported by 60-ton lifting capacity and capabilities for vessels up to 5,000 mm in diameter and 30 m in length. The workforce totals approximately 75 staff, including 40 manufacturing specialists and 25 installation personnel; the company identifies itself as one of the largest stainless steel training companies in Northern Netherlands, indicating an institutionalized welding workforce pipeline. Engineering tools referenced include HTRI/HTFS for thermal design, FEM for structural analysis, and AutoCAD/Inventor for 3D modeling; no AI/ML tooling is disclosed.

SRI's business model is project-based B2B contract manufacturing. Revenue is generated through one-off engineering, procurement, fabrication, and installation contracts rather than recurring product sales, with EPC contractors and industrial end-clients as buyers. A representative marquee engagement is the Avantium FDCA Flagship Plant ("Project Titanium"), in which SRI partnered with Bilfinger to deliver over 3,000 titanium welds for a bioplastics production facility, signaling capability in bioplastics and new-energy value chains. Pricing is contract-driven and bespoke, with costs varying by alloy, complexity, certification requirements, and project scope.

Name

SRI

Legal name

Speciaal Roestvrijstaal Industrie B.V.

Website

https://sri.nl

Company type

Private

Founded year

1957

Operating status

Operating

Headcount range

51–100 employees

Short description

SRI (Speciaal Roestvrijstaal Industrie B.V.) is a Dutch contract manufacturer of custom stainless steel and exotic alloy pressure vessels, columns, reactors, and heat exchangers for chemical, petrochemical, pharmaceutical, biotech, food, and new energy process industries.

Ownership category

akta.pro rank

Product category

Industrial Pressure Equipment & Heat Exchangers

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Industrial Process Furnace and Oven Manufacturing (333994)

SIC

Fabricated Plate Work (Boiler Shops) (3443), Industrial Process Furnaces & Ovens (3567), Metalworkg Machinery & Equipment (3540)

akta.pro industry

PRIMARYIMAHAEAC

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers)

Industrials, Manufacturing & Construction/Industrial Machinery & Heavy Equipment/Process & Industrial Plant Equipment

SECONDARYIMAHAEAE

Industrial Furnaces, Kilns & Thermal Processing Equipment

Industrials, Manufacturing & Construction/Industrial Machinery & Heavy Equipment/Process & Industrial Plant Equipment

Keywords

• Pressure equipment manufacturing
• Heat exchangers
• Stainless steel fabrication
• Titanium welding services
• Exotic alloy fabrications

Headquarters

HQ city

Veenwouden

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Pressure Equipment Manufacturing: SRI designs and manufactures custom stainless steel pressure equipment and heat exchangers on a project-by-project basis. Each project is fully customized from concept through engineering, fabrication, and installation. Revenue is generated through one-time project contracts with varying durations based on complexity.
2. Field Services (On-site Repairs and Maintenance): 24/7 service department providing on-site repairs, maintenance, and inspection services for pressure equipment. Includes scheduled maintenance, smart technological inspections, and preventive replacement of wear parts.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

SRI designs, manufactures, and installs custom stainless steel and exotic alloy pressure equipment and heat exchangers for the process industry. Core products include shell & tube heat exchangers, reactors, extraction columns, pressure vessels, and catalysis/reformer systems. The company supports every project end-to-end — from concept and engineering, through fabrication with in-house CNC, orbital, submerged arc, and titanium welding, to on-site assembly and 24/7 field service — primarily for chemical, petrochemical, pharmaceutical, biotechnology, food, and new energy customers worldwide.

Product overview

SRI (Speciaal Roestvrijstaal Industrie) is a specialized manufacturer of high-quality stainless steel pressure equipment and heat exchangers for the process industry. The company operates a unified product and service portfolio centered on custom-designed equipment including reactors, extraction columns, pressure vessels, and heat exchangers. These core products are supported by integrated services spanning Concept and Engineering, Development and Realization, Construction and Installation, and Service and Maintenance. SRI specializes in processing exotic materials including Titanium, Duplex, Super Duplex, Hastelloy, Monel, and Incoloy alloys. The company also maintains in-house capabilities including an X-ray bunker for quality control and specialized titanium welding services. SRI serves industries including chemical, petrochemical, pharmaceutical chemistry, biotechnology, food, and new energy (hydrogen applications).

Differentiator

Problem solved

Functional benefit

Products and services

• Stainless steel pressure equipment (custom) Custom-designed high-quality pressurized equipment manufactured from stainless steel and exotic alloys (Titanium, Duplex, Super Duplex, Hastelloy, Monel, Incoloy) for chemical, petrochemical, pharmaceutical, biotechnology, food, and new energy process industry customers worldwide.
• Shell & tube heat exchangers Shell and tube heat exchangers engineered for high-pressure applications in chemical, petrochemical, and energy industries. Designed using HTRI/HTFS thermal calculations and produced with orbital welding systems for pipe-tube plate connections.
• Reactors (pharmaceutical and chemical) Pressure vessels and reactors for pharmaceutical chemistry, biotechnology, and chemical industries, offered with optional agitators, appendages, and skid-mount options and featuring electropolished internal finishes for maximum cleanability and validated cleanability via riboflavin/sprayball testing.
• Extraction columns Complete extraction columns manufactured from Duplex materials including all internals and platforms, supplied for petrochemical applications with equipment diameters up to 5,000 mm and lengths up to 30 meters.
• Catalysis systems and reformers Equipment for hydrogen generation and innovative biodegradation processes in new energy applications, built from high-nickel alloys and special steels capable of handling extreme pressure/temperature operating conditions.
• Pressure vessels (certified) Certified pressure vessels designed and manufactured according to international codes (EN 13445, ASME VIII) including ASME U&R and NB Stamps for process industry applications worldwide.
• Concept and engineering services Full-service engineering from the concept phase including design, FEM strength and fatigue calculations using AutoCAD/Inventor, thermal calculations, and complete approval-trail management for process industry pressure equipment customers.
• Development and realization services Complete project supervision from development through production, including detailed production planning and independent QC department oversight for customer pressure equipment builds.
• Construction and on-site installation Manufacturing and on-site installation of certified pressure equipment using a team of 40 qualified specialists and state-of-the-art in-house facilities, delivered to customer sites worldwide.
• Service and maintenance 24/7 emergency service, on-site repairs, preventive maintenance, scheduled inspections, smart technological inspections, preventive replacement of wear parts, and certified equipment repair with NDT (non-destructive testing) capabilities worldwide.

Quantifiable outcome

• Successfully trained over 30 welders and welding supervisors for titanium work in very short time for Avantium Project
• +1 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Two partnerships are on record, tiered core.

• BilfingercoreStrategic or Co-development Partner · 10 December 2024SRI collaborated with Bilfinger on Project Titanium for Avantium's FDCA Flagship Plant. Bilfinger served as the main contractor while SRI provided titanium welding expertise. SRI trained over 30 welders and lasmonteurs, completed approximately 3,000 titanium welds, and assembled all titanium spool components for the pioneering bioplastic production facility in Delfzijl.
• AvantiumcoreStrategic or Co-development Partner · 1 January 2024SRI partnered with Avantium for Project Titanium at their FDCA Flagship Plant in Delfzijl, producing raw material for plant-based plastic (PEF). SRI demonstrated titanium welding capabilities with precision work resulting in approximately 3,000 approved welds. Avantium publicly expressed being 'bijzonder trots' (very proud) of the collaboration with SRI Feanwâlden.

Scale indicators8 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Kelvion: Dedicated heat exchanger manufacturer (plate, shell-and-tube, finned) for chemical, petrochemical, and energy applications. Direct competitor in SRI's heat exchanger line of business with similar certification requirements (ASME/PED).
• De Dietrich Process Systems: European manufacturer of glass-lined and stainless-steel reactors, vessels, and process equipment for chemical and pharmaceutical customers. Highly comparable to SRI in target verticals (pharma-chem, chemical) and in producing custom pressure equipment from specialty alloys.
• GMM Pfaudler: Global leader in glass-lined reactors and process equipment for chemical and pharma industries. Closely comparable to SRI's pharma-chemistry reactor business with similar end customers, certification requirements (ASME/PED), and engineering-to-installation scope.
• Ziemann Holvrieka: Specializes in stainless-steel process tanks, vessels, and brewing/dairy equipment for process industries. Directly comparable custom stainless fabrication profile and overlapping food/pharma/chemical customer base.
• HRS Heat Exchangers: UK-based specialist in heat exchangers for hygienic (food/pharma) and industrial applications. Comparable niche scale and direct overlap with SRI's hygienic/sanitary heat exchanger offerings.
• Thaletec: German specialist in glass-lined and stainless-steel reactors and process equipment for the chemical/pharmaceutical industry. Comparable in scale, niche focus, and customer profile to SRI's pharma-chemistry reactor business.

Broad incumbents

• Sulzer: Swiss process equipment and pumping specialist with significant overlap in chemical, petrochemical, and energy process equipment. A relevant incumbent benchmark though far larger and more diversified than SRI.
• Alfa Laval: Global incumbent in heat transfer, separation, and fluid handling — directly overlaps SRI's shell-and-tube heat exchanger core, but operates at vastly larger scale and broader product portfolio. Sets pricing and technology benchmark in heat exchangers.
• GEA Group: Large German process technology group supplying heat exchangers, separators, and process equipment across food, chemical, and pharma — overlapping with SRI's pharma-chem and food verticals but at much greater scale and broader scope.

Regional players

• Mueller Industries: US-based manufacturer of copper, brass, aluminum, and steel products including heat exchangers and pressure vessels. Comparable product categories (heat exchangers, pressure vessels) but primarily serves North American markets and operates at far greater scale than SRI.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/sri-speciaal-roestvrijstaal-industrie-b-v-
• Facebookfacebook.com/sri.veenwouden.77

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SRI