1. The processing of welded ball grid frame members should strictly control the geometric dimensions, with an allowable error of ± 1mm. If the members cannot be installed, the cause should be identified and arbitrary pipe cutting is not allowed.

2. The size of the small and medium splicing molds must meet the requirements, and deviations are allowed according to the steel structure construction acceptance specifications to avoid cumulative errors that may affect the overall installation quality.

3. The welding of the welded ball grid material should undergo welding process testing, and only after passing the test can a large amount of welding be allowed. Ball tube butt welds and according to design.

4. The required pull rod must be fully welded; The quality of hollow balls should be randomly inspected; During installation, the elevation of the axis line should be rechecked.

5. Welded ball grid frame members and small assembly units should be painted with 1-2 degrees of topcoat before final assembly to reduce high-altitude operations. Brush twice after the grid is completed. For parts damaged by welding, installation, or oil stains, they should be sandblasted and then coated with primer and topcoat. The type, performance, and coating layer thickness of the paint should meet the design requirements.