- Steel Works
- Steel Works
- Steel-Fab Inc
- Steel-Fab Inc
- Stephens Ornamental Iron
- Sterling Steel Cutting
- Stevens Equipment Co
- Stinson Brothers Welding Svc
- Stoess Manufacturing Co
- Structural Steel Services Inc
- Stuckey Metal Industries
- Suburban Iron Works
- Superior Rail & Iron Works Inc
- Superior Steel Erectors
- Supply Chain Solution
- Sur-Loc
- Sure Alloy Steel Corp
- Surgi Manufacturing Co
- Swett & Swett Welding & Iron
- Systemax
- T & D Metal Products Inc
- T & D Metal Products Inc
- T & D Metal Products Inc
- Tampa Amalgamated Steel
- Team Industries Inc
- Tech-Steel Inc
- Tennessee River Steel LLC
- Thermal Enginrering Internatio
- Thomas Steel Inc
- Thompson Metal Fab Inc
- Thompson Metal Fab Inc
- Tifton Machine Works Inc
- Tiger Line Equipment Inc
- Titan Products Inc
- Torbeck Industries
- Trident Building Systems Inc
- Triple S Corp
- Triple-A Welding Fab & Machine
- Triplex Inc
- Tru-Form Steel & Wire Inc
- Tyler Steel Co
- U P Fabricating Co
- U S Structural Fabricators Inc
- U-Save Auto Rental
- Unistrut Northern California
- United Steel Deck Inc
- United Steel Products Co
- United Steel Products Co
- United Steel Products Co
- Us Metal Works Inc
- Utah Pacific Bridge & Steele
- Valley Fabricating Inc
- Valley Metal Works
- Valley Welding Svc
- Valmont Structures Inc
- Van Dellen Steel Inc
- Vanstraten Brothers Inc
- Vault Enterprises Inc
- Vektek Inc
- Vertex RSI
- Vestal Steel Specialties Inc
- Vestal Steel Specialties Inc
- Vetter Sheet Metal & Auto Body
- Vetter Sheet Metal & Auto Body
- Victor Iron Works
- Victory Iron Works Inc
- Vidmar Iron Works Inc
- W & W Steel Co
- Wadco Industries Inc
- Wahlco Fabricators Inc
- WAKA Manufacturing Inc
- Wall-Car Fabricators Inc
- Ward Weller Co
- Wayne Manufacturing
- Waynesboro Ornamental Iron
- Weatherford Steel
- Webcoat Products
- Weber Brothers & White Metal
- Weibee Steel
- Welded Products
- Welding Inc
- Welding Works Inc
- Weller Fabrication
- Weller Fabrication
- WESSING Weld & Fabrication
- West Hill Iron Works Inc
- Western Forms
- Western Metal Lath
- Western Steel & Iron Works Inc
- Westfield Steel Co
- Whitacre Engineering Co
- Wicked
- William Lang & Sons Co
- William Ragsdale Co
- Willie's Welding Inc
- Wiltew LLC
- Winnebago Manufacturing Co
- Worsham Steel Co
- WRIB Manufacturing Co Inc
- Yeargin Miscellaneous Metals
- Yellowstone Welding Inc
- Youngstown Metal Fabricating
- Zieman Manufacturing Co
- Ziese Manufacturing Co Inc
- Zimmerman Metals Inc
- Zimmerman Sheet Metal Steel
- Zimmerman Steel Co
- Zwack Inc
- Zwack Inc