» Canam Steel
   Designs and manufactures steel joists, metal joists and steel components, mainly for the construction market of North America. Plant locations, publications, services, and products are featured.
   http://www.canamsteel.com/

» John W. Hancock, Jr., Inc.
   Manufacturer of steel joists . Offers typical joist and girder sections and details and a glossary of joist and structural steel terms .
   http://www.hancockjoist.com/

» MBS Steel Ltd.
   Manufacturers of open custom web steel joists and trusses for use in industrial, institutional and commercial buildings. Services, past projects, and corporate profile. Based in Brampton, Ontario, Canada.
   http://www.mbssteel.com/

» Omega Joists Inc.
   Manufacture open web steel joists from high strength cold formed chord sections and hollow structural web members. Specification tables for chord properties, moment of resistance and inertia.
   http://www.omegajoists.com/

» Steel Joist Institute
   A non-profit organization of active joist manufacturers to develop standards for steel joists and other manufacturers in the industry.
   http://www.steeljoist.org/

» Strucutures Of U.S.A., Inc.
   Open-web steel bar joist and mezzanine manufacturer. Steel deck and accessories supplier. Structural steel. Cadd and engineering services.
   http://www.structuresofusa.com

» Valley Joist, Inc
   Manufacturers of joists and metal decks . Includes a listing of regional sales representatives.
   http://www.valleyjoist.com/