At Steloy Castings, our wide-range of quality castings are produced in accordance with all major, internationally acknowledged specifications – e.g. ASTM A, DIN EN, BS and SEW. Our quality assurance systems are ISO 9001:2008 compliant and certified by SABS (SANAS + RVA) and TÜV (Rheinland). In addition to ISO 9001:2008, Steloy is the first casting supplier in South Africa to be awarded PED accreditation for all plants (Pressure Equipment Directive EC 97/23) – which enables us to certify cast components destined for pressure applications, as required by EU countries.

Standard quality control procedures applied include LPE, RT, UT, MPI and PMI testing – conducted by suitably qualified operators and technicians certified by internationally acknowledged authorities (SAQCC, PCN and SNT). Typical requirements within our scope of compliance include API 560, relevant ASME and DIN EN specifications and criteria. Material certification – as a standard – is conducted in accordance with EN 10204 3.1, with the possibility of 3.2 (involving accredited third party inspection), if required.

By having our own UT and RT shooting and development equipment, as well as qualified personnel to operate it, Steloy Castings is in a unique position to provide a full spectrum of NDT testing in-house and at competitive pricing.

Steloy is committed to providing quality casting solutions for all industries ranging from petrochemicals, and pump and valve through to rolling stock and power generation. As a result, we have become the casting supplier of choice of many industry leaders.

Click here to download copies of our accreditation certificates

 Customer Reviews

Providing Service Excellence for SAM Engineering

“We have an extremely valuable partnership with Steloy. I believe that Steloy is one of the best in terms of specifications and testing facilities, and reaction time in problem situations. Steloy adds value in the materials that they offer us which stems from the expertise and knowledge that they have in making these materials.”

Dave Uren, MD of SAM EngineeringCasting Supplier South Africa for SAM Engineering

Click here to read the full testimonial


A Successful Delivery for OnQuest Reformer Project

“OnQuest Engineering is pleased to advise that Steloy Castings has fully demonstrated their ability to supply spun and static castings in Stainless and HP-micro grades to meet the stringent quality and service requirements of OnQuest, and comply with applicable international standards on numerous projects. The reformer tubes supplied for our Tesoro Hawaii Reformer project were successfully installed and started, on schedule, in December 2006. This unit has been running without issue since start-up. Steloy’s ability to supply the spun cast reformer tubes, cones and manifolds in an expedited manner was a key element to the success of this project.”

Casting Supplier South Africa for OnQuestDon Trisch, Director of Operations at OnQuest



Partnering with Foster Wheeler on Key Projects

“Foster Wheeler is pleased to acknowledge Steloy Castings as a key supplier for the supply of static and centrifugal castings for our fired heater and convection applications. Steloy has repeatedly demonstrated its ability to meet our stringent technical and quality requirements. Steloy has performed well on several recent orders including, the supply of centrifugal cast tubes, HP modified and HK-40 tube sheets. These projects were delivered on time and with good quality, making them successful for Foster Wheeler and our clients. Together, we have developed a good working and communication relationship with Steloy’s staff. This has been critically important to our project execution successes. We look forward to our continued positive relationship.”

Casting Supplier South Africa for Foster Wheeler USABruce Brewer, Manager (Quality Assurance) at Foster Wheeler USA Corporation: Fired Heater Division

News updates

Steloy awarded IRIS Certification as Proven, Reliable Railway Components Provider

Steloy Foundry has obtained International Railway Industry Standard (IRIS) certification, a standard developed by the UNIFE Group (the Association of the European Rail Industry) to provide a transparent evaluation system for companies in the railway industry. The certification attests to the quality and reliability of Steloy’s finished, machined components for railway applications.

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About Us

Established in 1984, Steloy Castings ranks as one of the most advanced specialist foundries in South Africa, supplying static and centrifugally cast high-alloy components to customers across the globe.


Head Office:
4 Cobalt Street, Ekandustria, Bronkhorstspruit,
South Africa
P.O. Box 1591, Bronkhorstspruit, 1020, South Africa

Tel: +27 13 933 3331
Fax: +27 13 933 3653