Field Coring Division - Concrete Coring Applications(Sewer taps, storm drain openings, plumbing openings, electrical openings, wall and floor openings) - Concrete coring capabilities(up to a thickness of 12 inches, special size coring bits are available) - Field Services - Step installation for concrete and brick products - Flexible pip to manhole connector installations - for more information please call us at (757)538-2761.