
Further Information
Contact
STI Surface Technologies
International Holding AG
Schulstrasse 70
CH-9323 Steinach
T +41 71 447 97 97
F +41 71 447 97 92
sti@sti-surface.com
High-quality surface solutions for the Power Generation industry
For many years, the name STI Group has been synonymous with high-quality and functional surface technology. Successful industrial companies from a wide range of industries all over the world rely on STI Group's leading technological competence and experience.
Largest infrastructure worldwide
The infrastructure of our coating plants is designed for components measuring up to 5,000 mm diameter, 12,000 mm length and 64,000 kg weight. The precision grinding facility can handle components up to 6,000 mm diameter, 27,000 mm length and 64,000 kg weight.
Quality and precision
STI Group controls each individual process parameter and can thus achieve optimum quality and precision, even for components with complex shapes. Continuous control, state-of-the-art coordinate measuring technology and traceable recorded process steps are your guarantee for consistently high and reproducible quality of coatings produced to your individual specification.
All processes from one supplier
STI Group offers a comprehensive service from one port of call, ranging from initial advice through our Technical Sales, to professional mechanical processing, the surface treatment of your components and final quality control, through to support for your transport and customs requirements.
Research & Development
New applications, more exacting specifications and the search for environmentally compatible processes require innovation. STI Group's Research & Development Department is always one step ahead and today is already working on the technology of tomorrow.
Expert knowledge and experience
STI Group's process competence has been demonstrated in many audits carried out by customers. You too can benefit from the experience we have gained in cooperating with sophisticated industries, such as defense, aviation, and energy and environmental technology, which have been relying on STI Group's expertise and flexibility, and the high-quality surfaces we produce, for many years.
Environmental management to ISO 14001
STI Group considers the protection of the environment a key issue. Complying with environmental criteria is a prerequisite for all our processes. Our production facilities are not only equipped with waste air and waste water treatment plants but are also designed for efficient re-use of process media in the production chain. As a pioneer in environmental protection, STI Group significantly improves on the minimum legally required limits in some areas.
Customized surfaces for the power supply industry
Choosing from a wide range of processes we offer you the appropriate solution for your individual surface requirement, specifically designed for the respective functions of the components of your power supply or special applications. Our experts are available to give you comprehensive and competent advice.
Energizing Partnership
- Wide range of surface technologies
- In-house Research & Development department
- Largest infrastructure worldwide
- Consistent high quality and reproducibility of processes
- Recorded process steps ensure transparency and traceability of the production process
- Environmental certification to ISO 14001
- Quality management to ISO 9001
- Logistics service (on request)

