steel ladders and stair treads

Drainage cover detailed specification:

drainage trench cover is widely used in the urban road, the square, the botanical garden, the wharf, the airport, the parking lot, the road, each kind of industry, the civil project, etc.

GG-symbol of drainage trench cover

symbol of load bearing type:

 Type I--allowable load is 20 tons

Type II— allowable load is 14 tons

Type III--- allowable load is 6 tons

Type IV--- allowable load is 2 tons

Type V--- it is suitable for pedstrian 

Drain cover size and weight table:

1.these drain cover plate applies to the road cross-sectional and longitudinal drain

2.the drains width ranging from 200mm to 550mm

3. a means the steel grating length

4. h means the steel grating height

5. A means the frame length

6. H means the frame height