| ACL Steel Ltd. | Kitchener | Ontario | www.aclsteel.ca |
| Benson Steel Limited | Bolton | Ontario | www.bensonsteel.com |
| Burnco Mfg. Inc. | Concord | Ontario | www.burncomfg.com |
| C.W. Carry Ltd. | Edmonton | Alberta | www.cwcarry.com |
| Canam-Bridges, a subsidiary of Canam Group Inc. – Laval Plant | Laval | Quebec | www.canambridges.com |
| Canam Buildings and Structures, Inc. | St. Gédéon-de-Beauce | Quebec | www.canam-construction.com |
| Canam Buildings and Structures, Inc. | Boucherville | Quebec | www.canam-construction.com |
| Capitol Steel Corp. | Winnipeg | Manitoba | www.capitolsteel.ca |
| Central Welding & Iron Works | North Bay | Ontario | www.centralwelding.ca |
| Cherubini Metal Works Limited | Dartmouth | Nova Scotia | www.cherubinigroup.com |
| Constructions PROCO Inc. | St. Nazaire | Quebec | www.proco.ca |
| Design Built Mechanical Inc. | Charlo | New Brunswick | www.dbminc.ca |
| Empire Iron Works Ltd. | Wabamun | Alberta | www.empireiron.com |
| G & P Welding and Iron Works | North Bay | Ontario | www.gpwelding.com |
| IWL Steel Fabricators Ltd. – Martensville Plant | Martensville | Saskatchewan | www.iwlsteel.com |
| IWL Steel Fabricators Ltd. – Saskatoon Plant | Saskatoon | Saskatchewan | www.iwlsteel.com |
| Charpentes d’acier Sofab Inc. | Boucherville | Quebec | www.sofab.ca |
| Les Constructions Beauce-Atlas Inc. – Plant 1 | Ste-Marie de Beauce | Quebec | www.beauceatlas.ca |
| Les Structures G.B. Ltéé | Rimouski | Quebec | www.structuresgb.com |
| Lainco, Inc. | Terrebonne | Quebec | www.lainco.ca |
| Linesteel (1973) Limited | Barrie | Ontario | www.linesteel.com |
| Lorvin Steel Ltd. | Brampton | Ontario | www.lorvinsteel.com |
| M&G Steel Ltd. | Oakville | Ontario | www.mgsteel.ca |
| MacDougall Steel Erectors Inc. | Borden-Carleton | Prince Edward Island | www.macdougallsteel.com |
| Marid Industries Limited | Windsor Junction | Nova Scotia | www.marid.ca |
| Metal-Fab Industries Ltd. | Rocky View | Alberta | www.metal-fab.ca |
| Mirage Steel Limited | Brampton | Ontario | www.miragesteel.com |
| Modular Fabrication Inc. | Miramichi | New Brunswick | www.modularfab.com |
| Mometal Structures Inc. | Varennes | Quebec | www.mometal.com |
| MQM Quality Manufacturing Ltd. | Tracadie-Sheila | New Brunswick | www.mqm.ca |
| Norfab Mfg (1993) Inc. | Edmonton | Alberta | www.norfab.ca |
| Northern Weldarc Ltd. | Sherwood Park | Alberta | www.northern-weldarc.com |
| Ocean Steel & Construction Ltd. – Fredericton Plant | Fredericton | New Brunswick | www.oceansteel.com |
| Ocean Steel & Construction Ltd. – Saint John Plant | Saint John | New Brunswick | www.oceansteel.com |
| Produits Métalliques PMI | Rimouski | Quebec | www.pmistructures.com |
| Quirion Métal Inc. | Beauceville | Quebec | www.quirionmetal.com |
| RKO Steel Limited – Dartmouth Plant 1 | Dartmouth | Nova Scotia | www.rkosteel.com |
| RKO Steel Limited – Dartmouth Plant 2 | Dartmouth | Nova Scotia | www.rkosteel.com |
| Shopost Ltd. | Winnipeg | Manitoba | www.shopost.com |
| Structures XL | Terrebonne | Quebec | www.structuresxl.com |
| Structural Steel Services, Inc. | Meridian | Mississippi | www.sssvc-inc.com |
| Supermétal Structures Inc. | St-Romuald | Quebec | www.supermetal.com |
| Supreme Steel LP – Acheson Plant | Acheson | Alberta | www.supremegroup.com |
| Supreme Steel LP – Saskatoon Plant | Saskatoon | Saskatchewan | www.supremegroup.com |
| Supreme Steel LP – Winnipeg Plant | Winnipeg | Manitoba | www.supremegroup.com |
| Supreme Steel LP, Bridge Division – Edmonton Plant | Edmonton | Alberta | www.supremegroup.com |
| Supreme Steel Vancouver | Delta | British Columbia | www.supremegroup.com |
| Tek Steel Ltd. | Fredericton | New Brunswick | www.teksteelltd.com |
| Telco Steel Works Ltd. | Guelph | Ontario | www.telcosteelworks.ca |
| Tresman Steel Industries Ltd. | Mississauga | Ontario | www.tresmansteel.com |
| Victoria Steel Corporation | Oldcastle | Ontario | www.victoriasteel.ca |
| Walters Inc. – Hamilton Plant | Hamilton | Ontario | www.waltersinc.com |
| Walters Inc. – Princeton Plant | Princeton | Ontario | www.waltersinc.com |
| Walters Inc. – Stoney Creek Plant | Stoney Creek | Ontario | www.waltersinc.com |
| Warnaar Steel Tech Ltd. | Kelowna | British Columbia | www.warnaarsteel.com |
| Weldfab Ltd. | Saskatoon | Saskatchewan | www.weldfab.com |
| Wesbridge Steelworks Limited | Delta | British Columbia | www.wesbridge.com |
| XL Ironworks Co. | Surrey | British Columbia | www.xliron.com |
