Breif Introduction Of Manhole:

Manhole closings are protected by a manhole cover (also known as a "biscuit"[citation needed]), a flat plug designed to prevent accidental or unauthorized access to the manhole. Those plugs are traditionally made of metal, but may be constructed from precast concrete, glass reinforced plastic or other composite material (especially in Europe, or where cover theft is of concern)

Manholes are usually outfitted with metal, polypropylene, or fiberglass steps installed in the inner side of the wall to allow easy descent into the utility space. Because of legislation restricting acceptable manual handling weights, Europe has seen a move toward lighter weight composite manhole cover materials, which also have the benefits of greater slip resistance and electrical insulating properties.

The access openings are usually circular in shape to prevent accidental fall of the cover into the hole.

Manholes are generally found in urban areas, in streets and occasionally under sidewalks. In rural and undeveloped areas, services such as telephone and electricity are usually carried on utility poles or even pylons rather than underground.

Our Mnhole Making Machine:

Manhole making machine adopt high frequency vibration table,PLC andcolorful touch screen computer control system.We have special machine only for manufacture manhole raiser.it improve production quality and quantity • Improved efficiencies • Faster production • High reliability and minimal maintenance • Significant energy savings • Easy operation.

Production Characteristic:

1. The production efficiency is high.

2. The investment expenses are less.

3. The dense of pipes is better.

4. Concrete can be saved by using dry and hard concretes.

5. Steam can be saved by using cement hydration heat to maintain naturally.

6. Save rate is higher since there is no need to worry about the water consumption and mud elimination problems

Finished Manhole: