A patented dual-drive pipe system enables the Ditch Witch JT3020 All Terrain horizontal directional drilling unit to drill and steer at the same time. This, says Ditch Witch, is an advantage over single-rod systems, which are not capable of steering as well, if at all, in consolidated soils. The inner pipe of the JT3020 All Terrain’s two-pipe drill string continuously turns the drill bit at 150 to 400 rotations per minute. The new Ditch Witch HDD unit can steer, drill and back-ream up to 650 feet in all types of soil, including solid rock, and can be secured on most surfaces thanks to a heavy-duty hydraulic anchor system.
September 28, 2010