HOBAS® GRP Manholes

Pre-assembled GRP Manholes

The pipe shafts are made of HOBAS centrifugally cast glass fiber reinforced unsaturated polyester resin (CC-GRP) manufactured to ÖNORM standard. The shaft height is measured from the floor channel to the top edge of the cover frame or lid. Joints between the individual manhole parts, such as concrete cones, pipe shafts and base have to be rendered watertight with bearing ring seals.

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