Automatic threading machines that can work in-line or off-line, suitable for PVC electrical, gas, and water pipes (can be used for single and double extrusion) External and internal threading (with chamfering) occurs on both sides simultaneously. Independent spindle motors are used for both threading units. Thread lengths are adjustable. Thread depths are adjustable. Clamping of pipes during the threading process is provided by the iris mechanism jaw system. High efficiency and thread precision. Settings can be made from the touch screen for all pipe diameters. Easy operation, effective working, minimum maintenance. Optional servo system. Pipe preparation and storage stands. Clean working area thanks to dust-sealed structure