The hatch polymer - the TM sand type for viewing wells

Designation: Software hatch TM TU5772 - 001 - 65731944 - 2013 type
Material: composition of one structure including polyethylene, polyamide, polystyrene (binding) and sand.
Appointment: The hatch heavy is intended for installation on viewing wells of all types of the underground engineering communications located on public roads and roads with heavy traffic.
Main technical characteristics:
Rated load of 25 tons (250 kN)
Diameter of a cover - 630 mm. Cover height - 80 mm. Diameter of an internal manhole of the hatch - 580 mm. External diameter of the hatch - 840 mm. Hatch height - 110 mm. The mass of a product - 56 kg.
Warranty period of operation - 1 year from the date of input of hatches in operation, but no more than 2 years from the date of shipment by manufacturer.
Hatches conform to technical requirements of GOST 3634 - 99. Service life not less than 5 years.