S3i (Service d'Impartition Industriel Inc.) is a contractor that specializes in industrial services. A member of Mecanitec Group, a group of companies specialized in manufacturing and industrial construction, S3i is the “services, projects, and construction” arm of the group. It works on projects of all sizes in several sectors of the Canadian heavy industry. Our company has Cognibox, Browze, ISN, and Avetta certifications.
Our company
has Cognibox,
Browze, ISN,
and Avetta
S3i acts as an extension of our customers’ project and maintenance departments by providing:
- Creative solutions
- Quality work that distinguishes us from our competitors
- A people-first approach that prioritizes workplace health and safety
- Dedicated, skilled employees
- Work that is on budget and on time
S3i is recognized by its partners (customers, suppliers, employees, and associates) as a Canadian leader in industrial services.
Founded in 1991 as Procégaz, the company’s main activity at the time was the outsourcing of specialized labour in the Mauricie and Centre-du-Québec regions. In the early 2000s, in light of the economic situation and a profound rethinking of productivity on industrial construction sites, the company made a strategic shift that prompted it to change its name and expand its range of services. Since 2003, S3i been constantly growing and expanding its industrial project management operations across Canada, and now works entirely outside of the scope of Act R-20 (not covered by the decree). S3i is known for its global approach at competitive costs.
- CWB 47.1 et 47.2
- RBQ (with construction site quality manual)
- RBQ : ASME section VIII division 1
ASME B31.1, B31.3 and B31.5
CSA B51, Piping and category H fittings
- Our company has Cognibox, Browze, ISN, and Avetta certifications.

S3i is a member of the AESPIQ.

Mecanitec Group is a group of companies that has been serving the Canadian heavy industry since 1930, and that is renowned for its versatility and the ability of its different companies to work together to offer global solutions.
Mecanitec Group is a one-stop, personalized outlet for your projects, including design engineering, front-end and detailed engineering, manufacturing, installation, and maintenance.
Respect guides our actions daily
Be loyal to our customers, employees, suppliers, and partners
To undertake a complex project and overcome difficulties
Strive for excellence in everything we do
Choose happiness at work and in life