Our Certificates
About LSI-MECH ENGINEER PVT. LTD.
(Formerly M/s. LONESTAR INDUSTRIES)
With over 30 years of experience, we are proud to be a leading name in the metal forming industry and India’s largest manufacturer of metal expansion joints (MEJs). Our journey is rooted in engineering excellence, innovation, and a strong people driven culture that values both tradition and progress.
Our strength lies in a committed team of professionals and engineers, bound by a culture of harmony, continuous learning, and shared purpose. Each individual brings a unique set of skills that enrich our Capabilities. We are especially proud of our young engineers, who contribute with fearless creativity,a hunger to learn, and unwavering dedication to a unified goal our company’s growth and technological leadership.
As a technically forward organization, we contribute actively to research and innovation in the field. Our Director, a member of the ASME International Working Group (IWG), has authored and contributed to several research publications, helping advance global standards. We are also closely associated with top institutions such as CEG (Anna University), St. Joseph’s College of Engineering, Sathyabama University, Cheyyar Polytechnic, and others supporting knowledge exchange and student mentorship.
With people at our core, we strongly believe in giving back through teaching, collaboration, and industry-academia partnerships. Our AGM, in association with Purdue University, USA, completing her doctorate there and has worked on cutting-edge innovations in manufacturing industry pushing boundaries in product performance and reliability. As proud contributors to the metal forming industry, we hold a clear belief:Engineering can change the world and we are here to lead that change
Dedicated Teams
We are committed to helping our clients achieve their goals by delivering fully customized solutions. Every design is tailored to meet specific customer requirement, site conditions, and temperature/pressure parameters-ensuring performance, reliability, and on-time delivery.
True Partners
Our deep sense of ownership in every project means we’re not just suppliers were your partners. We strive to deliver high-quality, precision engineered products, with a focus on building lasting relationships and exceeding expectations.
Focus on Innovation
Our close collaboration with clients inspires continuous innovation. We promote seamless interaction and open communication, ensuring that new ideas flow freely across teams driving product excellence and long-term value.
Global know-how
Leveraging our experience and insights, we adopt a progressive approach to both technology and marketing. Our teams stay ahead of the curve bringing global standards and forward-thinking strategies to every project.
Year of
Experience
Country
Experience
Satisfied
Customers
Our specialization
Crafting perfect piping solutions for your requirements
Bellows-Type Expansion
Joints
Bellows-Type Expansion Joints absorb thermal expansion, vibration, and movement in piping systems.
Tied Metal Expansion
Joints
The Expansion Joints are restrained to travel along their axis (exception – pressure balanced types).
Untied Expansion
Joints
The Expansion Joints free to travel along its axis. Pressure Thrust Load will act on anchors.
Untied Single Expansion
Joints
Simple expansion joint compensates small axial, lateral, and angular movements individually or combined.
Testimonial
Siemens,2021
M/s. LSI-MECH ENGINEERS PVT LTD. is our valued supplier, & we sincerely thank you for your support during this crucial period in completing all Siemens revenue-related orders.
Thanking all the team members of M/s. LSI-Mech Engineers Pvt. Ltd. for timely submission of Quality documents, Quality compliance requirement and smooth dispatches for all the project material”
BHEL,Haridwar
”Appreciation from BHEL side to you and your team who have gone extra mile in deputing your officials and facilitating successful repair of compensatory at suratgarh site.
The same has helped BHEL and Customer in bringing back the Unit 8 power plant into operation in minimum possible time Best wishes from our side to you and your team for a bright future and looking forward to long term relationship with your organisation”
Our Blog
Latest News
Inline Pressure Balanced Expansion Joints
ACC Bellows & Steam Duct with Hot Well Package
