All our products are made of mix between grey or ductile cast iron and concrete, with the weight up to 200 kg. We offer manholes and gully tops in every possible strength class (the appropriate class to be used depends upon the place of installation). Starting with products in A15 class which can only be used in areas used by pedestrians and pedal cyclists, through class B125 (footways, pedestrian areas and comparable areas, car parks or car parking decks), C250 (for gully tops installed in the area of curbside channels of roads ), D400 (carriageways of roads) up to class E600-F900, areas imposing high wheel loads, e.g. docks, aircraft pavements. All sold covers, grates and frames are certified by appropriate insitute (Instytut Techniki Budowlanej) and are complying with respective standards (PN EN 124, DIN).