Cast Iron Manhole ring and covers and gully grating

本公司生产的球墨铸铁井盖、井圈、沟渠格栅及箅子具有以下优点：
The Ductile Cast iron Manhole Covers and frames and gully and grate which are produced by our company with below advantages:
***-安全防盗Security,prevent the cover being stolen
***-无噪音No noise.
***-高承载强度High load-bearing
***-耐腐蚀corrosion resistance
***-安全Safe
1. 产品符合BS EN**4：***4标准.According to BS EN**4:***4,
2. 材质等级：GGG**0/7 .The material grade: GGG**0/7,
3.产品涂层：黑色沥青油漆及环氧静电喷涂.Coating: black bitumen、epoxy powder.
4:球墨铸铁井盖及沟渠盖盖子分为：A*5, B**5, C**0, D**0, E**0 and F**0 等级
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.