The quality of the anchor bolts needs to be strictly monitored. Because the anchor bolts are pre-embedded fasteners, the anchor bolts are usually pre-buried in the foundation part of the building. After the installation, the concrete needs to be pre-buried, so once the anchor bolts are installed, it... read more
(1) Mark the corresponding position of the end of the steel bar to mark the length range of the rust cleaning; this length range is required to be greater than the required anchoring depth of 50mm. (2)Start the sander and use a wire brush to polish the surface of the steel bar within the length of t... read more
(1) After the drilling is completed, clean the dust within the radius of 0.5 m around the hole, and clean the hole with a gas pump and a brush. In this process, three blows and two brushes are required, that is, the blow hole is three times, the brush is cleaned twice, and the cleaning is completed.... read more
When the diameter of the anchor bolt is below 30mm and the centerline is offset within 30mm, the bolt can be red-baked with oxyacetylene, and then the bolt can be bent with a sledgehammer (or bent with a jack). After correction, it should be strengthened with steel plate. To prevent recovery when ti... read more
1. It is best to use a drill bit that matches the anchor bolt when drilling. The drill bit uses the model of the drilled concrete. When drilling, the steel bar must be avoided. One is to prevent the main rib from being injured, and the other is to prevent the drill bit from being injured. 2. Before ... read more