There are three kinds of steel gratings distinguished by different bearing bar types, The respective of features are as follows:
1. Plain: the most widely used gratings,available for flooring sidewalk,all kinds of ditch cover,stair tread,etc.
2. Serrated:best non-skid property & safety compared with plain grating.
3. I-shape:lighter,Not substantially weaken the case of load capacity more economical and practical comparing with plain grating.