Payment & Shipping Terms:
|Material:||Ductile Cast Iron||Application:||Sidewalk/highway/airport|
|Standard:||EN124 Standard||Model Number:||Drainage Channel|
|Feature:||Anti-frozen/durable/shock Absorption/security||Place Of Origin:||Cangzhou,Hebei|
di manhole cover,
cast iron channel grating
Heavy Duty Cast Iron Channel Grating Square Storm Drain Grates For Drainage
A15 B125 C250 D400 E600 F900
Easy to install noise reduction
|Eternal Size||Cover Diameter||Clear Opening||Depth||Weight||Loading Capacity|
1. Shallow manhole
It is provided at shallow depth of 75-90cm (2'-3'). It is provided at the beginning of branch sewer or at a place not subjected to heavy traffic. It is provided with a light cover at its top it is also called inspection chamber.
2. Normal Manhole
It is provided in sewer line at depth of 150cm with a heavy cover on its top. It is generally of square shape (or rectangular shape).
3. Deep Manhole
They are provided at depth greater than 150cm with heavy cover at the top. The size is gradually increased and a facility for going down is provided.
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