Irin grating jẹ irin alapin ati irin alayidi ni ibamu si aaye kan pato ati awọn ọpa agbelebu (irin onigun mẹrin, irin onigun, irin yika, irin alapin, ati bẹbẹ lọ), ati welded sinu ọja egboogi-skid irin kan pẹlu akoj onigun mẹrin ninu arin, Irin gratings wa ni o kun lo fun goôta ideri, irin be Syeed slabs, igbese ladders ati be be lo.