Grating tolerance

Our Forge Welded grating is made entirely according to the Chinese standard YB/T4001.1-2007, and if the customer need, it can also be produced according to the American standard MBG531-15.

The allowable deviation of length is 0~-5mm. (MBG531-15: ±6mm)
The allowable deviation of width is ± 5 mm. (MBG531-15: ±6mm)
The diagonal tolerance should be equal or less than 5mm. (MBG531-15: ±6mm)
The lean between grating center & cross bar edge should be equal or less than 5mm. (MBG531-15: 5.2mm)
The allowable deviation between the centre of cross bars measured randomly across 1500mm in length should come within ±6mm. (MBG531-15: ±6mm)
The deflection of longitudinal bow should be equal or less than 1/200 of grating length. (MBG531-15: 1/200)
The deflection of transverse bow (without end bar) should be less than 1/100 of grating width. (MBG531-15: 1.05/100)