1）Design and Fabrication: In the design and fabrication stage, it is necessary to select appropriate steel types and specifications according to the design requirements and usage conditions of the staircase, and to develop the structural plan and fabrication process of the staircase.

2）Preparations: Before construction, the construction site should be cleaned and organized, and the required tools and equipment should be prepared, including hoisting equipment, safety belts, wrenches, power tools, welding machines, etc.

3）Installation of Main Support Structure: First, install the main support structure of the staircase, including the central bearing, the base of the staircase, and the supporting structure. During the installation process, strict measurement and adjustment are required to ensure that the position and levelness of the support structure meet the design requirements.

4）Installation of Staircase Framework: Then, install the framework of the staircase according to the design requirements, including the main structure and treads.