Description

The Ductile Cast iron Manhole Covers and frames and gully and grate which are produced by our company with below advantages:
Security,prevent the cover being stolen
No noise.
High load-bearing
corrosion resistance
Safe
1. .According to BS EN**4:***4,
2. The material grade: GGG**0/7,
3.Coating: black bitumen, epoxy powder.
4:球: A*5, B**5, C**0, D**0, E**0 and F**0
Ductile iron manhole covers and gully grates are divided into the following classes:
A*5, B**5, C**0, D**0, E**0 and F**0.