Ruskon Betoni Etelä oy
EK cone rings from the Hollola concrete product plant
Pre-installed gasketed cone rings are used to reduce the manhole diameter to 600 mm. Extension rings and cast iron covers can be installed directly on top of the cone rings.
Ruskon Betoni Etelä Oy
Cone rings from Kokkola concrete product plant
The cone ring is used to reduce the upper section of the manhole to DN600 size. This allows the installation of a cast iron cover assembly or an A-cover on top of the manhole.
Ruskon Betoni Etelä Oy
Telecom Cone rings from the Kokkola Concrete Product plant
The telecom cone manhole is designed for routing telecommunications cables underground. Our telecom cone manholes include polystyrene knock-out sections in four directions, positioned 90 degrees apart. Thanks to these pre-formed weak points, the orientation of the manhole can be decided on site, as openings can be made easily without the need for diamond drilling..
Napapiirin Betoni Oy
Cone rings with groove joint from Napapiirin Betoni
Cone rings reduces the manhole diameter to DN600. Extension rings and cast iron covers can be installed directly on top of the cone section.
The ring features a groove joint that can be sealed when required. Available in DN800/600 and DN1000/600 sizes.