WELDED TUBE OF CANADA The Welded Tube of Canada Group of Companies is a diversified steel pipe and tube producer with annual production capacity of 700,000 tons. Headquartered in Concord, Ontario, Canada, Welded Tube owns and operates five manufacturing and finishing facilities strategically located in Canada and the U.S. to ideally serve the North American marketplace. Founded in 1970, Welded Tube has three divisions: Energy Tubulars (OCTG), ERW Mechanical and HSS. Through continued inv...