... , scaffold, portable work platforms, cooling tower, luggage rack, window/door frame, sign post, bridge structure, bus bar supports, ... unmanned aerial vehicles, formula-1 race car4) Vehicle: motor top sticks, u-shaped motor stator wedges, service truck booms ... water pipe6) Building: roofing laminate, flat roof, door surrounds, over-door canopies, window canopies and dormers, chimneys, coping systems, ...