... flooring gratings ,and walkways gratings etc .Grating Dimension Bearing bar pitch(mm)12.5, 15,25, 30, 30 ... 25, 45, 50, 60, 60.32, 80, 100Cross bar pith(mm)38, 50, 76, 100, 101.6Thickness(mm ... framedgrates,trash rack grates ,paint backing chambers……Bearing bar pitch from 12.5mm to 100mm of which ... bar pitch from 38mm to 101.6mm of which 50mm and 100mm are recomended . safety steel step ladders with handrail ...