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SimuMech is a service-oriented mechanical engineering consulting firm dedicated to delivering exceptional engineering services and innovative, sustainable solutions worldwide. Headquartered in Pretoria, South Africa, the SimuMech Team offers a broad spectrum of mechanical engineering services for petroleum refineries, process plants, food processing plants, mines, factories, steel fabricators, and engineering workshops globally.

Specializing in the design and verification of pressure vessels and storage tanks, Finite Element Analysis (FEA), pipe stress analysis, pipeline design, machine element design, fitness-for-service evaluations, and professional sign-off of mechanical equipment and designs, SimuMech provides comprehensive solutions tailored to clients’ needs.

SimuMech’s engineers are registered professional engineers at the Engineering Council of South Africa, Engineers Australia, Queensland Board Of professional Engineers as well as the International Register of professional Engineering and are capable of signing off on projects of any size.

Committed to delivering outstanding quality work promptly and at affordable rates, SimuMech prioritizes client satisfaction.


Bennie Buys (Managing Director), MEng (Mech), PrEng, CPEng, RPEQ, IntePE(Aus)

With 18 years of postgraduate experience, he is a seasoned professional engineer who embarked on his career journey at Axis, a mechanical consulting company. Through a combination of hard work, perseverance, and loyalty, he ascended to the role of Technical Director, overseeing and approving all engineering work. However, recognizing a growing demand for specialized mechanical engineering services, he made the bold decision to establish his own company.

Committed to delivering excellence, he ensures unwavering dedication and quality in every project, regardless of scale or client, whether it be a small-scale operation or a large Oil Giant.

Holding a Master’s degree in Structural Integrity, he possesses a profound theoretical understanding of crucial subjects such as fatigue, strength of materials, and finite element analysis. His practical expertise extends from designing the largest fabricated bullet vessels to conducting advanced finite element analysis on stress corrosion crack growth in Tar Separators, successfully executed within an operational plant.
Bennie Buys

André Buys (Director), BEng (Mech), PrEng, CPEng, RPEQ, IntePE(Aus)

He is a professional engineer with 15 years’ experience in the consulting business. He studied Mechanical Engineering at the University of Pretoria and started his career to become a recognized senior specialist engineer in the oil and gas industry.

His field of expertise is pipe stress analysis, finite element analysis and design of pressurized equipment to most of the recognized international Codes. One of his key strengths is to perform out of the ordinary pipe stress analysis for process plants. One of his mayor projects where he was the lead designer where more than 1000 isometrics were checked for stress, was for the new LPG import facility at Saldanha Bay. This project was a high profile project due to the potential danger of this facility storing more than 10k m3 of LPG. Therefore, advance pipe stress analysis like seismic and vibration were performed.

He is committed to deliver only quality work and on time for all the clients and is regarded as one of the specialist in his field.
Andre BUys