Stair size:

Platform height. In the rotation sequence of stairs, the platform height is controlled within 20-30cm, the height step is the ceiling height, the spacing is more than 2m, not less than 1.8m, the middle two handrails are 8cm, not more than 12.5cm, the height from the handrail to the waist is 85-90cm, and the diameter of the handrail is 5.5cm.

Dimensions of small central cylindrical spiral stairs. For houses with small space, you can choose the size of spiral staircase with central column. The opening size of spiral staircase with smaller central column can be 1300 * 1300MM or 1400 * 1100 mm.

The height of the stair step and the depth of the central column. The step length shall be controlled within 15-18cm, and the step depth shall be 22-27cm. 22 steps left and right. If it is too high, a stair rest platform may be set.

install Steel wood staircase with central column method:

Install the stair step board: walk out of the step board, end the installation azimuth of the stair step board, gradually from top to bottom, adjust the height of the small support, and then connect the small support with the pedal without fixing it; fixed Spiral stairs Then follow the steps; Fix and tighten all screws step by step.

Installation of rotary staircase fence: first determine the required installation column direction, install the column with eyes, then fix the bottom of the column, loosen the upper part, and use wire drawing and handrails. Draw and adjust the installation of the rear handrail to the proper direction, repair the screws on all posts of the fence, and pay attention to the harmony between the handrail and the viewpoint.

Installation of scaffold tray for rotating stairs: check the height of the stairs from the head, and the drawing height is consistent with, to determine the position of the rotating column in the installation position, the hanging position, and the measurement of the column separated by two walls is consistent with the drawing;, The rotating stair tray of the assembly is placed on the ground. According to the drawing scale, the stair keel connected to the drawing will be set as required,. About fixed top line; According to the drawing requirements, the tray will be inserted into the middle column pipe from to until the tray is fixed with the wall. Rotate the direction of the stair tray until it is balanced. Fix the top line of the rotary stair tray and tighten it until the tray does not shake.