The characteristics of cast iron inspection manhole cover and its scope of application and construction requirements.

The scope of use of inspection manhole covers: heavy-duty ductile iron manhole covers are used on the asphalt roads of the park; general, polymer-based composite inspection manhole covers are used on motor vehicle roads in the park that require paving.

How to improve the quality of the square ductile iron manhole cover?

In order to prevent the uneven contact surface between the manhole cover and the well circle, causing impact noise when the car is driving, a flexible cushion is installed between the manhole cover and the well frame to provide fire-fighting impact noise. Or the contact surface of the well cover and the well frame is matched by mechanical processing (only for round products), and the matching is smooth.

What causes the rust of the manhole cover，how to prevent it？

The rust phenomenon of the manhole cover, how should we solve it, the following ductile iron manhole cover will introduce you to the knowledge of the causes of rust, please grasp it firmly.

Unique design of ductile iron manhole cover.

The ductile iron manhole cover is made of medium ductile iron QT500-7. This material makes the manhole cover strong in compression, bending, impact resistance, heat resistance, cold resistance, abrasion resistance, acid and alkali resistance, aging resistance, and resistance to deformation. Features.

What are the significant advantages of ductile iron manhole covers?

In daily life, you can see all kinds of manhole covers everywhere on the streets, including sewage treatment manhole covers, communication manhole covers, and municipal manhole covers.

Nodular cast iron manhole cover installation and commissioning plan and related instructions.

Many users think that the installation of ductile iron manhole covers is very simple. In fact, this understanding is incorrect. Although the installation of ductile iron manhole covers is not very complicated, it must be carried out carefully according to the standard.