well grating

1. Flat steel:
material is Q235A or stainless steel, there are Ordinary planar, non-slip gear type and section I type. Common specifications are 20mm×5mm,25mm×5mm,25mm×3mm,32mm×5mm,32mm×5mm,40mm×5mm,40mm×3mm,50mm×5mm,65mm×5mm,75mm×6mm,100mm×8mm,100mm×10mm and so on.
2. Bar:
the round, twisted square steel, square or hexagonal steel made of Q235A, or 304 stainless steel. Twisted square steel is made by the rod drawing and twisting, the common specifications are 5mm×5mm, 6mm×6mm, 8mm×8mm and so on.

3.Features of Gully Cover:

(1). High strength, light structure, solid mesh Press-locked structure, high bearing, easy loading and other features.
(2). Beautiful appearance, durable:Hot-dip zinc surface treatment so has very good corrosion resistance, surface gloss appearance.
(3). Ventilation, lighting, cooling, explosion-proof, non-slip performance.
(4). Optimized Draining Design: Water draining area amounts up to 83.3%, which is equal to twice of the cast iron product. No accumulation of dirt, rain, snow and water, self-cleaning, easy to maintain.
(5). Anti-thief gully cover, the angle frame is cast in reinforced concrete, and then put steel grating into the angle frame.  

4.Gully Cover Load Table:
Pressure:Light: 25 tons /㎡
　　　Heavy: 70 t /㎡
　　　Super Heavy: 140 tons /㎡

5.The scope of gully cover:
Light: Car, pedestrians on campus, residential parks, park, underground parking and kitchen.
Heavy: Below 20 tons car-free plant, the general road, trunk road, parking and streets.
Super Heavy: Trunk roads of Heavy-duty trailer, container cranes and aircraft; Large parking lot, mines, docks and airports.