grp sheet 1.ISO9001 2.anti-slip 3.anti-conductive floor 4.walkway,platform,trench cover,fence,stair treads ... Fiberglass Reinforced Plastic Gratings ( grp sheet ) offer unique properties: ... operation platform, drilling platforms, stair treads, equipment walkways, trench cover, pedestrian overbridge, ship deck, scaffolding floor, ventilation gate, ...