The PTW Tube-Weld Design chassis is the latest offering from the Beall construction line. The TWD incorporates an all-tube welded structure. The result is the lightest and most durable chassis ever built. The TWD can be ordered with the Millennium turntable option or standard fi xed axle group. Three, four and fi ve-axle combinations. PTW continues to raise the standard on engineering and design in the dump trucking industry.