Galvanized Photovoltaic Bolts

• 1.1 Good corrosion resistance: The zinc coating can form a dense protective film on the surface of the bolt, effectively isolating air, moisture and other corrosive media, preventing galvanized photovoltaic bolts from rusting and corroding, and extending the service life of the bolts in outdoor photovoltaic environments. Whether in humid coastal areas or in special environments with high salinity and high humidity, it can maintain good stability.
• 1.2 High strength and mechanical properties: It is usually made of high-quality carbon steel or alloy steel, and has high strength, hardness and toughness after proper heat treatment and processing. It can withstand various stresses and loads of photovoltaic modules and brackets during installation and use, such as gravity, wind load, seismic force, etc., to ensure the safety and reliability of the structure of the photovoltaic system.
• 1.3 Good conductivity: Zinc itself has a certain conductivity. Galvanized photovoltaic bolts help to achieve the conductivity of electrical connections in photovoltaic systems, ensure good electrical connections between photovoltaic modules, between brackets and grounding systems, etc., meet the electrical safety requirements of photovoltaic systems, and reduce the risk of electrical accidents such as lightning strikes.
• 1.4 Smooth surface, easy installation: The surface of the galvanized bolt is smooth, which can reduce friction during installation, facilitate the screwing and tightening of the nut, and improve installation efficiency. At the same time, the smooth surface is not easy to damage the surface of the photovoltaic module or bracket, avoiding damage to the anti-corrosion layer or appearance damage caused by scratches and other reasons.
• 1.5 High cost-effectiveness: Compared with some bolts with more advanced anti-corrosion coatings or special materials, galvanized photovoltaic bolts have a better cost-effectiveness. It can not only meet the requirements of the photovoltaic system for bolt performance, but also have advantages in cost control, reducing the overall construction cost of the photovoltaic project.

2.1 Bolt selection and inspection

(1) Selection according to design requirements: Strictly follow the design requirements of the photovoltaic system, select galvanized photovoltaic bolts of appropriate specifications, models and performance levels to ensure that they can withstand the corresponding loads and environmental conditions.

(2) Check appearance and quality: Before installation, carefully check the appearance of the bolts to see if there are defects such as peeling of the zinc coating, cracks, deformation, thread damage, etc. For each batch of bolts, sampling inspection can be carried out to check whether their dimensional accuracy and mechanical properties meet the standard requirements.

2.2 Installation tools and torque control

(1) Use appropriate tools: Select appropriate installation tools, such as socket wrenches, torque wrenches, etc., to ensure that the size and shape of the tools match the bolts to ensure that force can be applied evenly during installation to avoid damage to the bolt head or nut.

(2) Accurately control torque: Use a torque wrench to accurately control the tightening torque according to the specifications and performance requirements of the bolts. Excessive torque may cause the bolts to stretch excessively or even break, while too little torque may cause the bolt connection to be loose during use.

2.3 Installation environment and conditions

(1) Clean the installation surface: Before installing the bolts, the surface of the installation parts such as photovoltaic modules and brackets must be cleaned to remove dust, oil, rust and other impurities to ensure that the installation surface is flat and clean to ensure good contact and connection strength between the bolts and the installation surface.

(2) Avoid installation in harsh environments: Try to avoid installing bolts in rainy days, strong winds and other harsh weather conditions. A humid environment may cause the bolt surface to rust, and strong winds may affect the installation accuracy and construction safety.

2.4 Installation sequence and method

(1) Follow the installation sequence: Follow the installation specifications and process flow of the photovoltaic system and follow the correct bolt installation sequence. Generally speaking, install the bolts of the main structure first, and then connect the secondary components to ensure the installation accuracy and stability of the entire system.

(2) Ensure installation verticality: When installing the bolts, ensure that the bolts are perpendicular to the installation surface to avoid tilting or eccentric installation, so as not to affect the bolt's force performance and connection reliability.

Post-installation inspection and maintenance

(3) Post-installation review: After completing the bolt installation, conduct a comprehensive inspection of all bolt connection parts to ensure that the bolts are tightened and that nuts, washers and other accessories are installed in place without omissions or looseness.

(4) Regular maintenance and inspection: After the photovoltaic system is put into operation, regular maintenance and inspection should be carried out to observe the appearance and connection of the bolts, and promptly detect whether the bolts are loose, corroded, deformed, etc. If any problems are found, they should be promptly handled or replaced.

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