Ruskon Betoni Etelä Oy
EK-manhole rings from Hollola concrete product plant
The joint of EK manhole rings is equipped with a pre-installed gasket developed and manufactured by DS Seals GmbH. The factory-installed gasket ensures a watertight connection and remains securely in place during installation. If necessary, the manhole ring can be removed and reinstalled without the gasket becoming displaced.
EK manhole rings are designed for use in wastewater and stormwater inspection chambers and silt trap manholes, as well as other applications where water tightness and durability are required. They are also suitable for alkaline wastewater environments.
EK manhole rings with a diameter of 600 mm are also available with a locking profile, allowing extension rings to be installed on top of the ring.
All ring sizes are available with a polyurethane coating.
Ruskon Betoni Etelä Oy
UL/LH manhole rings from the Kokkola concrete product plant
UL/LH manhole rings feature a grooved joint that can be sealed when required. Typical applications include water, wastewater, cable, and drainage manholes.
The Kokkola plant’s product range covers diameters from DN600 to DN2000, available in multiple height options. The product family includes manhole rings, base rings, and cone rings.
Adjustment rings can be installed directly on DN600 manhole rings to allow precise adjustment of the manhole cover level.
Napapiirin Betoni Oy
Manhole rings with a grooved joint from Napapiirin Betoni concrete product plant
Manhole rings are manufactured with a grooved joint that can be sealed when required. Typical applications include water, wastewater, cable, and drainage manholes.
The product range manufactured at the Rovaniemi plant extends from DN600 to DN3000. It is the widest selection within the group and also includes the largest manhole diameters. The product family comprises manhole rings, base rings, cone rings, and covers.