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The fastenings manufacturer will take you to know: what are the precautions for the installation of steel structure bolts

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The fastenings manufacturer tells you that the bolts are the connecting parts of the steel structure. According to the bearing capacity, they can be divided into two types: ordinary bolts and high-strength bolts. The following fastenings manufacturers will introduce the precautions in the construction of steel structure bolts.  

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1. For the bolt connection of dynamic load or important parts, the spring washer should be placed according to the design requirements, and the spring washer must be set on the side of the nut.  
2. Fastenings manufacturers tell you that the installation of high-strength bolts should be able to penetrate the holes freely, and it is strictly forbidden to penetrate them. The hole diameter of the high-strength bolted steel plate is slightly larger than the bolt diameter, and it must be drilled and formed.  
3. Fastenings manufacturers tell you that the scheduled connection of high-strength bolts is usually divided into friction connection, tension connection and pressure connection. Among them, friction connection is the basic connection form widely used at present.  
4. The installation sequence of high-strength bolts: Fastenings manufacturers tell you to start from the rigid part to the unconstrained free end. The high-strength bolts on a joint should be tightened one by one from the middle of the bolt group to the surroundings for the initial tightening, re-tightening and final tightening. Each tightening shall be marked with different colors of paint to prevent leakage. The fastenings manufacturer tells you that the initial tightening, re-tightening and final tightening of high-strength bolts in the same joint should be completed within 24 hours. If there is no prescribed design, it should be carried out according to the construction process sequence of first tightening the high-strength bolts and then welding (ie bolting first and then welding).