1. Use a drill bit that matches the anchor bolt when drilling, and the steel bar must not be damaged.
2. Before construction, the anchor bolt must be tested for material mechanical properties, and it can be used on site only after passing the test.
1. Use a drill bit that matches the anchor bolt when drilling, and the steel bar must not be damaged.
2. Before construction, the anchor bolt must be tested for material mechanical properties, and it can be used on site only after passing the test.