Brett Martin Underground offers a comprehensive range of drainage
systems. It includes the Drain, Sewer, Perforated, Surface Water
and Cable Duct systems.The entire range incorporates pipes and
fittings in eight diameters from 53.9mm to 400mm.
Double and triple socket versions of our 45° and 87.5°
branches are available in the most popular sizes, with double
socket, unequal, branches being available in the larger diameters.
Over fifty different branches are offered in total.