Data Sheet
|
Material |
Ductile Cast Iron GJS 500/7 (EN 1563) |
|
Class |
A15 / B125 / C250 / D400 / E600 / F900 |
|
Locking |
With / without locking system |
|
Certified |
By ICMQ and BSI according to new regulation EN 124-2: 2015 |
|
Installation |
45°corners for installation wizard. Antiskid design and eyelet for the lifting on the cover. |
|
Surface finishing paint |
Bituminous alkyd paint by SGS certification, attesting to the absence of highly toxic substances |
|
Application |
Customization with logos/written reference upon request |
Manhole cover
Manhole cover refers to the general name of the cover plate and its fixing accessories with sealing performance installed on the manhole. The manhole cover can be divided into protruding type and embedded type according to whether it is higher than the opening surface after installation.
The cover plate, coaming plate and seat ring of the manhole cover are usually made of hot-rolled carbon steel or made of the same material as the hull structure where the manhole cover is installed.
Top cover
The tectum, also known as the quadruple body, is located on the dorsal part of the midbrain and consists of two pairs of round hillocks, called superior colliculus and inferior colliculus. There are two pairs of round ridges on the dorsal side of the midbrain, which are collectively called quadruples or tectum. It is mainly composed of gray matter, which is the general term for the upper colliculus and the lower colliculus.
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