Orbimatic has introduced its Orbitwin unit for high-rate production tube welding. The Orbitwin allows the connection of two orbital welding heads to one orbital welding power source. The unit allows the connection of two different types of weld head, which means two different tube sizes can be welded without having to change weld head cables. In production applications two different components can be welded simultaneously to help increase manufacture through put. The unit switches power, water and controls to the head that is initiated and the weld cycle begins. The unit also automatically detects which head is being activated and selects the correct procedure for the head in use. While one head is in use the other is completely isolated from the main welding supply so can be handled without any risk to the operator.