Ductile iron slotted gratings
+ 8-point per meter M12/A2 self locking bolt connection
+Anti-slip classification R11/V10 (except 2621721);;;;;
Mesh gratings
+ 4-point per grating M12/A2 self locking bolt connection;;;;;;
Mesh gratings I ductile iron
+ 4-point per meter M12/A2 self locking bolt connection;;;;;;
