1) Process flow chart for making steel structure before installation of high-rise steel structure；

2) Reasonably divide the construction flow section;

3) Determine the order of installation of the steel components;

4) When the lifting capacity of the crane allows, the structures that can be assembled in the ground group are as good as possible in the ground group, such as steel columns and steel supports, steel truss groups, etc., and can be lifted in place once;

5) The installation of the water flow section can be divided according to the plane shape of the steel structure building, the structure type, construction period, on-site construction conditions and the number of installation machines;

6) The installation sequence of the components shall be developed from the central core area, ie the standard frame, to the surroundings in the plane, and the vertical direction shall be installed from bottom to top.

7) After the flow section, component installation, calibration, and fixing practices (including reserved welding shrinkage) are determined, the general components are connected to a welding sequence: the plane should be symmetrically developed from the middle to the periphery, and the welding sequence should be established vertically according to the process flow.

8) Install the stairs and profiled steel plates immediately after the beams of each column are installed. The stack can't exceed the load of the beam.

9) For the installation of steel components and the construction of steel concrete for floor slabs, the two operations should not be more than five stories apart. When there must be more than five stories, it should be determined by the supervisory designer.