• 3710 Peter Street, Windsor ON Canada
  • (519) 985-6161


Southwestern Manufacturing Inc is the single source supplier for sophisticated steel challenges, and we’re determined to deliver.  We operate with broad knowledge and experience in steel fabrication and machining for the world’s leading manufacturers since 1994.  SMI has extensive understanding of the industry and customers requirements.

We run a collection of some of the largest equipment in the world with a dedicated team of 300 skilled professionals.  SMI provides precise, custom-made manufacturing, to ensure superior quality, reliability, efficiency, and satisfaction.


The company has expanded to widespread plant capacity to cater for our 10-million-pound steel turnover, spread across 4 state-of-the-art facilities operated by 300 skilled professionals.  The company runs 2 shifts a day, 7 days a week, to guarantee your project is completed on schedule.  SMI is the single source solution for steel fabrication and machining.  The team is determined to see you succeed.


The Southwestern Manufacturing team is made of grit and determination with refined skills.  We are practiced experts through intensive training in steel fabrication for the procurement, cutting, stress relieving, shot blasting, fitting, welding, machining, non-destructive testing, final paint, and specialty coatings, in house quality inspection, and custom sub-assemblies delivered with our logistics network.  All this, resulting in high-value finished items across many diverse sectors delivered directly to your site.

The SMI range of expertise proposes an innovative manufacturing approach and machining solutions for steel assemblies and machining that would challenge any other organization.  We are well invested in advanced CNC and Robotics machinery to improve efficiencies.  We apply our skill, care, and ingenuity to create a final product that is characterized by the highest standard of quality and value.  Our ISO 9001/2015 and CWB accreditation are just the beginning.