... Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating.3.Surface Treatment: Untreated, Painting , ... floor drain cap, platform scale, covers the grille, stereo, road parking lot, organs, schools, factories and enterprises, stadiums, garden ... highway, railway guardrail etc. Item No.BearingBar PitchCross Bar PitchSpecification of bearing bar load( width × thickness ) 20×325×332×340 ...