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.
04
2020-01
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.
03
2020-01
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.
02
2020-01
Develop the global market with quality
Only from the customer's point of view can we truly win the market.
