Ductile Iron Manhole Cover-Topsun Pipelines（Shanghai）Co., Ltd.

Global Pipeline System Solution Provider

Ductile Iron Manhole Cover

A manhole cover or maintenance hole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.

Classification:

Ductile Iron Manhole Cover

Key words:

Ductile Iron Manhole Cover

manhole

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Product Description

Technical parameters Test load: heavy-duty 400KN, general-purpose 250KN, light-duty 125KN

performance characteristics

1. High strength: Checked by magnesite, it has high compressive, flexural, impact-resistant strength and toughness. After long-term use, the product will not appear to be crushed and damaged, and it can completely prevent the occurrence of "urban black hole" accidents.

2. Beautiful appearance: The surface pattern of the magnesite inspection manhole cover is beautifully designed, and the color is bright and adjustable, which beautifies the urban environment.

3. Easy to use and light in weight: The weight of the product is only about one-third of that of cast iron, which is convenient for transportation, installation, and emergency repair, which greatly reduces labor intensity.

4. Anti-theft: The magnesite inspection manhole cover has no recycling value and is naturally anti-theft; according to customer needs, it is equipped with a locking structure to realize the anti-theft of the property in the well.

5. Strong weather resistance: The magnesite inspection manhole cover can be used normally in the environment of -50℃～+300℃ through scientific formula, advanced technology and perfect technical equipment.

6, acid and alkali resistance, corrosion resistance, wear resistance, vehicle rolling resistance, long service life.

Classified by material. it can be divided into 4 categories

　　A. Metal manhole covers: cast iron, ductile iron, bronze manhole covers, etc.;

　　B. High-strength steel fiber cement concrete manhole cover (cement-based composite material);

　　 C. Recycled resin manhole cover (recycled resin matrix composite material);

　　D. Polymer matrix composite material inspection manhole cover, etc.

　　 Classified by shape is generally divided into round and square.

　　In the urban road administration, the circular shape is generally adopted, because the circular manhole cover is not easy to tilt, which can better protect the safety of pedestrians and vehicles.

　　Used in the countryside and cable wells, generally square, which can better prevent rain and other liquids from entering.

　　 There are many national standards for manhole covers in China, single-layer, double-layer, cast iron, ductile iron, composite, cement, magnesite, etc.

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