The upper hand of the steel grid plate: the steel grid plate can be directly tiled on the waterproof layer when applied to the roof project, replacing the 7cm thick reinforced concrete rigid shield layer above the waterproof layer in the traditional roof, thus changing the shield layer from the original rigidity to flexibility, making the construction more light and fast, and eliminating the damage to the completed waterproof layer during the construction of the rigid shield layer from the basis. From the perspective of the whole project, the steel grid plate construction speed is fast, there is no need to maintain backfill and then follow up, which greatly shrinks the construction period and saves manpower, financial resources and material resources.

The upwind of the composite steel grating: the composite steel grating is used to replace the drainage layer, and the drainage shield plate replaces the clay gravel/pebble drainage layer with a thickness of 15cm-20cm in the traditional practice, thus eliminating the roof load and reducing the project cost. The component of the construction space to deal with the drainage shield plate is high-density polyethylene, and the high-density ethylene is resistant to plant root puncture, therefore, the application of KingLock series steel grating on the top plate of planting can prevent the root system of planting plants from damaging the waterproof layer and the layout top plate, thus preventing roof leakage from the foundation. B. high density polyethylene product has stable performance and its own degradation period is 300 years, which can completely achieve the same life as the building. C. high density polyethylene is resistant to chemical corrosion, the natural situation and the same as the usual industrial situation in the acid, alkali, salt can not cause corruption damage. D. and geotextile compound together filter, cut off, storage and drainage multi-function in one, easy to construction, eliminate labor intensity, shrink construction time.

The steel grating plate has a light and fast construction: the steel grating plate only needs to be welded (buckled) on the waterproof layer after acceptance. Similar products than force: steel grating toughness, high tensile strength, this is polystyrene, polypropylene can not do, its own tensile compressive strength, can ensure that the clean interlayer stable shape, so as to achieve excellent drainage results.