In the grid processing, only by ensuring that the raw materials used are products of qualified quality can it play a good performance role in the installation of the grid and make the construction effect of the grid better. Therefore, in order to ensure that the quality of the overall building meets the use standards, we will It is necessary to standardize various accessories for grid construction.

1. The quality assurance data, appearance, inspection, laboratory test, and mechanical performance test of the materials that arrive at the factory should be reviewed in strict accordance with the procedures, and the sampling ratio must meet the specification requirements.

2. The inspection is carried out in strict accordance with the specified requirements. The production process of each process requires the first inspection, patrol inspection and completion inspection by the workshop inspector. The production personnel must inspect the entire process. After the processing is completed, a full-time inspector will conduct a special inspection to ensure the processing The geometrical dimensions, shape and position tolerances, etc. meet the specified requirements.

3. Carry out tests and tests in strict accordance with regulations, especially for raw materials, high-strength bolts, electric welding, etc., which should undergo necessary process qualification and mechanical performance testing.

4. After each process is inspected, the inspector will affix the "Parts Certificate" before the transfer is allowed.

5. The first inspection should be carried out for the production of the purlin assembly line, and regular sampling inspections should be carried out to ensure that its geometric dimensions and appearance quality meet the specified requirements.

6. Further control the quality of reversion. The specific requirements are to be responsible for copying, proofreading, and reviewing, and convene production, quality, installation and other departments to review.

The above are the six points that grid manufacturers need to pay attention to in quality control specifications.



The grid structure is novel in structure, reasonable in force, light in weight and low in steel consumption. The bolted ball joint grid is convenient to install on site, and is suitable for special-shaped structures with tight construction schedules, restricted construction conditions and power consumption, complex grid shapes and difficult positioning of rods. At present, the grid structure has been widely used in large stadiums, exhibition centers, theaters, shopping malls, terminal buildings, waiting halls, factory workshops, warehouses, TV towers, etc.