... Grating 1,Type:Plain,Serrated,"I",Press-Locked 2,FB405/30/100, 3,Surface:Untreatment,Galvanized, ... of which 20,30mm and 40mm are recommended. 2).Cross bar pitch may be 24-200mm, of ... 5).Surface treatment: Hot-dipped Galvanized, Painted, Untreated.2. Guide to selection of steel grid plated Light & ... SIZE (mm)MAINTENACE FLOORS NO PUBLIC USE UDL=2.5KPaPEDESTRIAN TRAFFIC PUBLIC, RESIDENTIAL AND LIGHT USE ...