... ,refinery ,power plant,Sewage treatment plant and so on.Bearing bar pitches maybe 12.5,15,25, 30,40, ... 200mm,of which 50 and 100mm are recommond.Type of bearing bar can be plain, serratted and I bars.Grating ... Dimension in the followings : Bearing bar pitch(mm)12.5, 15,25, 30, 30. ... ,fences,framedgrates,trash rack grates ,paint backing chambers…… galvanized steel pipe fences