1. UM-3DX 3-die thread rolling machine is specially designed for tubular processing. Equilateral triangle supports running to assure the roundness. 2. with 3- die thread rolling machine is with equilateral triangle supports the thread rolling for improving roundness, concentricity and vertical degree. 3. UM-3DX thread rolling machine is driving by hydraulic unit: Featuring in easy operation and powerful pressure. 4. UM-3DX is set with 4 speeds transmission gear with grinding shape teeth: Featuring in noise-free, durable and precise transmission. 5. Particularly applied to the tubular thread processing, such as oil connectors, bicycle, automobile and motor vehicle parts, radiating pipe etc.