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About Us
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Constructing - A way of life
S. Thartius Engineering Contractors, established in 1974, is now one of India’s top Engineering, Procurement, and Construction (EPC) companies.
What started as a small mechanical and civil construction firm has transformed into a trusted name in infrastructure development and industrial turnkey solutions. Over the years, Thartius has built a reputation for integrity, reliability, and engineering excellence, serving some of the nation’s most respected organizations.
Our expertise covers mechanical, civil, and structural engineering. We support our work with strong project management and a commitment to quality, safety, and timely delivery.
This focus has made Thartius one of the few EPC contractors in India known for completing large-scale, high-value projects that meet global standards.
51Year's of Experience
Recently, we have entered the manufacturing of important high-end engineering components for nuclear power and space research. This move further boosts our contribution to India’s technological growth. Our hallmark of time-conscious professionalism defines every project we take on. This relentless focus has earned Thartius a Top SME ranking in India and a consistent NSIC-CRISIL rating of ‘SME 1’ since 2008. This recognition reflects our excellence, stability, and trustworthiness.
Our Vision
To be a trusted EPC company in India, recognized worldwide for reliability, performance, and sustainable engineering solutions that power industries and communities through innovation and technical excellence.
Our Mission
To deliver global EPC contractor standards in quality, safety, and innovation, ensuring sustainable project growth through discipline, continuous improvement, and technology-driven excellence
Our Purpose
To drive India’s industrial growth by building world-class turnkey EPC projects with dedication, integrity, and an uncompromising will to succeed — empowering progress through engineering, procurement.
Review from Our Clients
We value our clients’ feedback and are proud to share their experiences working with us.
Thartius executed our Smelter Plant project with unmatched precision and efficiency. Their innovative design solutions not only met international benchmarks but also reduced operational costs significantly. The team’s ability to focus on energy conservation and environmental safety sets them apart in the industry. 
Manager in charge
CRG Department
Despite the challenging conditions in Trincomalee, including working in a conflict-sensitive zone, Thartius completed the project ahead of schedule. Their team showed resilience, professionalism, and excellent problem-solving skills. The facilities handed over have been running seamlessly, proving the quality of their engineering and execution. 
Head - Projects
Lanka IOC
Working with Thartius on critical components for the Kudankulam Nuclear Power Plant was an excellent experience. Every safety protocol was adhered to without compromise, and their fabrication quality exceeded expectations. Thartius has proven to be a reliable partner capable of delivering on the most demanding projects in the power sector. 
SO /D/ Engineer in Charge
NPCIL
Appreciation by IOCL & ISRO
“We take pride in being recognized by industry leaders like IOCL and ISRO — acknowledgments that inspire us to continually raise the bar in quality and innovation.”
Let’s Build Together
Partner with us to turn your vision into reality — with reliable expertise, seamless collaboration, and results that exceed expectations.
Call us on
+91 82206 88896
Mail us on
thartius@thartius.com