Canadian Structural & Mechanical Ltd. (CSM) is a full-service industrial contractor based in Sarnia, Ontario, Canada. Established in 1990, the company has evolved from a small maintenance provider into a significant player in the industrial sector. CSM is part of a Canadian-owned group of companies and operates primarily from Sarnia, with the ability to serve clients across Canada.

CSM offers a diverse range of services tailored to various industrial needs. These include the fabrication and installation of structural steel components, design and installation of mechanical piping systems, and the installation and maintenance of heaters, boilers, and refrigeration systems. The company also provides comprehensive project management, planning, supervision, and specialized services like hot tap welding. With a dedicated workforce of around 200 employees, CSM can expand to over 700 during peak periods, ensuring efficient handling of large-scale projects while prioritizing safety and quality.