HDD is a trenchless construction method that involves drilling a small pilot hole using technology that allows the drill to be steered and tracked from the surface. The pilot bore is launched from the surface at an angle between 8 and 20 degrees. The bore then levels out when the required depth is reached. A bore path of very gradual curvature or near-straight alignment is normally followed to minimize friction and to stay within the allowable joint deflection and the allowable curve radius for the pipe.

ETTI offers HDD services throughout New England, with operational divisions in Lisbon Fall, ME, and Lawrence, MA. Our industry leading team has the experience, training, and safety record to deliver completed projects on time and on budget to satisfied clients. Regardless of the size or scope of work, we offer the latest in equipment, technology, and methods to get the job done.