1>Bearing bar pitch:30,40,60mm 2>Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>Galvanized,Painted,Untreated

Steel grating/ditch cover 

Assort:

1. the grating that hte pitvh between bearing barsis 30mm,is most widely used type in industrial fiels. Among normal types,it has the strongest resistance to surface lash.

2.the grating that eh pitch between bearing bar is 40mm is the most economical and lightest type.It is the best choice for you on occasions that the clear span is small.

3.the grating that the pitch between bearing bar is 60mm and the pitch between cross bar is 50mm is developed specially for mining industry.It solves the problem of mineral splash on the plate.So it is often appointed to use in processing works,of mining industry.

4.the grating with the pitch of 30mm between bearing bars and of 76mm between cross bars is the most popular type used home and abroad.It is proper for mony applications such as walkways,platforms,etc.