- Wilson Welding
- Wilson Welding & Repair
- Wilson Welding Works
- Wilson's Sanitary Inc
- Wilson's Welding
- Wilson's Welding
- Windansea Welding
- Windham Industries Inc
- Wine Country Stainless & Gskts
- WIP Mechanical
- Wittman Welding
- Witzel Welding & Equipment Co
- Wizard Fabrication
- Wizard Of Metals
- Wolf Creek High Country Wldng
- Wolff's Welding & Fab Inc
- Wolff's Welding & Fabrication
- Wood Forest Welding Shop
- Woodbury Welding & Equipment
- Woods Welding
- Woodworks Portable Welding Svc
- Woody's Weld-All
- Worden's Welding LLC
- Work Horse Enterprises Inc
- World Wide Welding
- WRC Welding & Fabrication
- Wright Brothers Welding Inc
- Wright Welding Inc
- Wrought Iron Designs
- WWMS
- Wynn's Welding
- Wynne Welding
- Xtreme Fabrication
- Xtreme Fabrications
- Y K Welding Co
- Ynot's Welding & Fab
- Young B's Welding
- Zero Tolerance Fabrication
- Zimovia Welding
