Hardware & tools

Zhongtai Carbon Steel Bar Grating China Factory Bathroom Shower Grate 2 - 1/4 Inch X 3/16 Inch Heavy Duty Steel Floor Grating

SYMBOL OF STEEL GRATING G 325 /30 /100 F G G: Sign of steel grating 325: Size of bearing bar ( width x thickness ) 30: Bearing bar pitch 100: Cross bar pitch F: Sign of the shape of bearing bars G: Sign of surface treatment