Serving Toronto and surrounding areas for over 25 years Our mission is to provide you with proficient hot tapping, line stopping and welding services. Whether it be welding, fabricating, pipefitting, high-pressure welding, hot tapping and/or sensor-well inserting or line stopping our technicians are experienced and TSSA certified to complete the task to your satisfaction. Our technicians are trained to collect all information on-site and present to you the details of how to proceed in a safe and proper manner to take your project to the next level. Proven Technology By using technology developed by TONISCO® it is possible to make branches from ¾” to 24”. Pipeline materials can vary from plastic and composite to stainless steel. TONISCO® hot tapping equipment is modified to fit all the standard valves and hot tapping components in the marketplace. Our Customers WellFab has a wide customer base. We offer service to both public and private sectors. Our customers vary from big energy providers to local contractors who have a need for hot tapping. Where there is a need to keep networks operational you can depend on WellFab to get the work completed. Our Process WellFab has a wide customer base. We offer service to both public and private sectors. Our customers vary from big energy providers to local contractors who have a need for hot tapping. Where there is a need to keep networks operational you can depend on WellFab to get the work completed.