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This spiral staircase is for a mobile television studio, and it can be assembled and disassembled for easy movement.
The spiral stair is all aluminum, heavy duty, and a bolt together kit. Each piece was prefabricated at our plant, disassembled, and then packed for shipment. No drilling is required or any modifications are needed.
This spiral stair is a 72" diameter with 3/4" round solid baluster, one per tread. The spiral stair treads are made out of 3/16" check plate material welded to a 3 1/2" ID heavy duty schedule 40 round pipe continuous sleeves that have been cut to the riser height according to the finish floor to finish floor measurements. These treads come with two holes drilled and tapped for set screws to tighten into place. The handrail is a 1 1/2" round, .065 tubing, rolled to fit the diameter of the spiral stair. The landing at the top of the spiral stair is made out of 3/16" checker plate with a continuous sleeve with rail on two sides. The material is a mill finished aluminum.