Grating

The size, shape, bearing pitch and the cross pitch for the steel grating could be designed according to the needs of the clients.

On the end of the bearing bar we should use the flat bar whose standard is as the same as the bearing bar to wrap. We could also wrap for the steel grating with shape steel. We could wrap with skirtboard and the section of the end board should not be more than the section of the bearing bar.

There may be no end board, depending on the requirements.

For end boards, weld height must be at least equal to the thickness of the bearing bar, and weld length must be at least four times the thickness.

If the end board does not carry loads, weld every fourth bearing bar, with spacing no more than 150 mm.

If the end board carries loads, avoid staggered welding.

When the cut out or the holes is more than 180 mm we should provide edge treatment for the steel grating.

We should weld fully (continuously) for the stairs treads end board.

When there is a leading edge protection board it should be continuous through the whole steps.

The bearing bar could be rectangular, I shape steel grating and other geometry shape steel.

The bearing bar could be with the serrated steel grating. Thus it has the good ability to anti-slip. There should be more than five serrated designs every 100 mm.