The order consists of one 2,000 kW Weldac for longitudinal seam welding, along with five weld seam annealer stations powered by two 1,000 kW and two 800 kW Sinac heat generators, as well as one 800 kW Sinac with a traversing gantry solution to help minimise scrap. At the customer’s request, EFD Induction assisted in the development of the seam normalising process by recommending equipment and process parameters for seam normalising.
The induction equipment will be used to produce 28 inch (711 mm) diameter pipe with up to one inch (25 mm) wall thickness, which will be the world’s largest diameter high-frequency welded pipe.
Some of the round products will be formed to structural beams. While the customer have supplied large HHS for many years already, the new mill will allow the full range of these products to be made in the USA for the first time — and with a larger maximum wall thickness than previously.
Atlas Tube has used equipment from EFD Induction since 1996, and the Zekelman Group operates a total of 15 Weldacs. They chose to invest in yet another Weldac for their new tube mill based on their own experience with the reliability of these high-output solid- state welders, as well as EFD Induction’s brand of customer service.
_{(Source: EFD Induction)}