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Refined hot-dip galvanized bolts
The characteristics of hot-dip galvanized bolts includeproducts
1. Good anti-corrosion performance: The hot-dip galvanized layer can effectively prevent rusting and corrosion of bolts in harsh environments, extending their service life.
2. Smooth surface: The galvanized layer is relatively uniform and smooth, with a beautiful appearance.
3. Strong adhesion: The zinc layer is tightly bonded to the surface of the bolt and is not easily detached.
Hot dip galvanized bolts have a wide range of applicationsproducts
1. Construction industry: used for connecting and fixing steel structures, such as steel beams, steel columns, etc.
2. Power facilities: play an important role in the installation and maintenance of power equipment such as utility poles and iron towers.
3. Bridge engineering: used for the assembly and connection of bridge structures.
4. Communication facilities: such as the construction and maintenance of communication towers.
5. Freeways and railways: Fixation of guardrails, signage, and other facilities.
6. Mechanical manufacturing: assembly and connection of various types of mechanical equipment.
In construction projects in coastal areas, due to high air humidity and salt content, hot-dip galvanized bolts can better resist corrosion, ensuring the stability and safety of building structures. In the installation of guardrails on highways, hot-dip galvanized bolts can withstand the influence of wind, sun, and vehicle vibration for a long time, maintaining the firmness of the connection.
The installation and use methods of hot-dip galvanized bolts are as follows:
Preparation before installation:
1. Check the specifications and quantity of bolts to ensure compliance with installation requirements.
2. Check whether the installation surface is flat and clean, and remove oil stains, rust, and debris.
Installation steps:
1. Thread the hot-dip galvanized bolts through the holes of the components to be connected.
2. Apply an appropriate amount of anti jamming agent or lubricant to the threaded part of the bolt to facilitate the installation and tightening of the nut.
3. Install the matching nuts and use a wrench or other suitable tool to gradually tighten the nuts according to the specified torque value.
4. For structures connected by multiple bolts, diagonal tightening should be used, gradually and evenly tightening to ensure that the connecting components are uniformly stressed.
Precautions for use:
1. Avoid excessive tightening during installation to prevent bolt stretching deformation or fracture.
2. Ensure good fit between bolts and nuts to avoid slipping or other issues.
3. During use, regularly check the tightness of the bolts, and tighten them in a timely manner if there is any looseness.
If the bolt is exposed to harsh environments such as high temperature, high humidity, and strong corrosion, the frequency of inspection and maintenance should be increased.
It should be noted that hot-dip galvanized bolts of different specifications and uses may have some special requirements during installation and use, and should be operated according to relevant standards and specifications according to specific situations.
The installation torque of hot-dip galvanized bolts will be affected by the following factors:
1. Zinc layer thickness: A thicker zinc layer will increase the friction between the bolt and nut, resulting in an increase in installation torque.
2. Surface roughness: The surface roughness after hot-dip galvanizing will change the contact area and friction coefficient, thereby affecting the installation torque.
3. Bolt diameter and length: Bolts with larger diameters or longer lengths require greater torque when tightened.
4. Lubrication situation: If lubricant is used during installation, it will reduce the friction coefficient and lower the installation torque.
5. Material of connecting components: The hardness and surface characteristics of the material of the connected components will affect the friction force, thereby affecting the installation torque.
6. Accuracy of installation tools: The accuracy and precision of the tools will affect the actual value of the applied torque.
7. Tightening speed: Tightening speed that is too fast or too slow may cause changes in torque.
8.Environmental temperature: Changes in temperature can affect the performance and size of materials, indirectly affecting installation torque.