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 EN124：1994标准.According to BS EN124:1994,
2. 材质等级：GGG500/7 .The material grade: GGG500/7,
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：A15, B125, C250, D400, E600 and F900 等级
Ductile iron manhole covers and gully grates are divided into the following classes:
A15, B125, C250, D400, E600 and F900.
1：（等级A15）测试1.5吨
2：（等级B125）测试12.5吨
3：（等级C250）测试25吨
适用于沟渠格栅及箅子安装要求如下：格栅顶端距离道路边缘距行车道不得超过0.5米，距人行道不得超过0.2米。
3: (class C250 minimum) Test 25 metric ton
For gully tops installed in the area kerbside channels of roads which when measured from the kerb edge, extend a maximum of 0.5m into the carriageway and a maximum of 0.2m into the footway.
4：（等级D400）测试40吨
5：（等级E600）测试60吨
Areas imposing particularly high wheel loads, e.g. docks, aircraft pavements.
6：（等级F900）测试90吨
适用于所有高负载道路如码头及飞机场路面等等
6: (class F900 minimum) Test 90 metric ton
Areas imposing particularly high wheel loads, e.g. docks, aircraft pavements.
7: 方/圆形球墨铸铁井盖及井圈Square/ Round/Rectangle Ductile Iron Manhole Cover and Frame
-----重型方形和矩形井盖和框架Heavy Duty Square and Rectangular Manhole cover and frame.
----中型的方形和矩形井盖和框架Medium Duty Square and Rectangular manhole cover and frame.
----轻型方形和矩形井盖和框架Light Duty Square and Rectangular manhole cover and frame.
-----内圆外圆Circular cover with circular frame
----内圆外方-Circular cover with square frame
-----通道栅、双层盖和框架Channel grating, double layer cover and frame
Manhole covers production process
Capacity load testing and inspection before delivery and loading containers
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