... to 80 mm), square tubes, rectangular tubes, FRP profiles, etc. cover wide ranges. The regular colors include black ... greenhouse structures, scaffold, portable work platforms, luggage rack, window/door frame, sign post, bridge structure, bus bar supports, ... pipe, gutters6) Building: roofing laminate, flat roof, door surrounds, over-door canopies, window canopies and dormers, chimneys, insulators, cable ...