Hebei Zhonghe Foundry Co. LTD
Hebei Zhonghe Foundry Co. Ltd
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High Strength Ductile Iron Manhole Cover Rust Proof Long Working Life Customized Product
CLASS A15 - Areas to be used only by pedestrians and cyclists.
CLASS B125 - Pavements, pedestrianised areas and similar surfaces,parking areas and multistorey car parks.
CLASS C250 - For covering devices installed on roadsides and in gutters at the side of streets.
CLASS D400 - Road surfaces (including pedestrianised streets), hard shoulders and parking areas for vehicles of all kinds.
CLASS E600 - Areas used by heavy vehicles, such as surfaces in airport and dock facilities.
CLASS F900 - Areas sudject to particularly heavy loading, for example surfaces in airports.
Type: Square, Round
Size: 300x300, 400x400 and more
Manhole Cover Surface: black bituminous paint
1) Product Information:
Manhole Covers are manufactured for construction and public use. Manhole Covers shall be smooth and free from sand holes, blow holes, distortion or any other defects
2) Material
a) Ductile Iron GGG500-7 & 400-12
b) Grey Iron GG20
3) Designs .
a) EN124 A15, B125, C250, D400, E600 and F900
b) A60005 for casting design
c) Major standards designs available
d) As per customers' drawings or samples
4) Process
a) Molding boards
b) Green sand with hand molding
5) Coating
a) Cold applied black bitumen
b) Without coating
c) Coating as per customers' requirement
d) Different accessories are available
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.
1. They are used to carry out inspection, cleaning and removing obstruction in the sewer line.
2. Manhole allows joining of sewers or changing the direction of sewer or alignment of sewer or both.
3. They allow the escape of considerable gases through perforated cover and thus help in ventilation of sewage.
4. They facilitate the laying of sewer line in convenient lengths
We can provide product cutomization services. Send us the drawing and give an ideal product.