Materials and application fields of galvanized hexagonal bolts

Hot dip galvanized hexagonal bolts are a commonly used fastener with a wide range of applications. Hot dip galvanized outer hexagon bolt is a fastener with six external threads, usually composed of a screw and a nut. Its characteristic is that the threaded surface is hexagonal, making it easy to rotate with a wrench. The thread of the outer hexagonal bolt is tight, with strong load-bearing capacity, and is suitable for situations that require high tightening force.

Galvanized outer hexagonal bolt is a type of hexagonal bolt with compact structure, high strength, and high machining accuracy. Carbon structural steel or alloy structural steel is generally used as the substrate, and after galvanizing treatment, galvanized outer hexagonal bolts are formed. Common substrates include Q195, Q235, 20MnTiB, 40Cr, etc.

Galvanizing treatment is the process of immersing bolts in a molten zinc aqueous solution and conducting electrochemical reactions using electricity to precipitate zinc ions on the surface of the bolts, forming a layer of zinc iron alloy. This treatment method can effectively improve the corrosion resistance and durability of the bolts.

Galvanized hexagonal bolts are widely used in industrial production and construction fields. In the manufacturing of mechanical equipment, galvanized hexagonal bolts are commonly used to connect steel components, bearings, and machine tools. In the field of construction, galvanized hexagonal bolts are mainly used to connect steel structures, bridges, and highway guardrails.

According to the level of screws, they are divided into 4.8 level hot-dip galvanized screws and 8.8 level hot-dip galvanized screws, as well as a small number of 10.9 level and 12.9 level hot-dip galvanized screws. Hot dip galvanizing, also known as hot-dip galvanizing, is a process for hot-dip galvanized screws. The process involves placing the screw in a zinc solution with a temperature of over 600 degrees, allowing the surface of the screw to adhere to the zinc solution to form a coating. The coating thickness of hot-dip galvanized screws is generally 50 degrees Celsius μ M-75 μ Between m. Compared to ordinary electroplating and Dacromet treatment, the coating thickness is much higher, and outdoor use can achieve several decades of rust free. Common uses include State Grid, TV tower, etc. Due to the thick coating of hot-dip zinc screws, they must be used in conjunction with hot-dip zinc nuts with enlarged holes. Hot dip zinc nuts refer to nuts that increase pre punched holes during cold heading and use enlarged taps to enlarge nuts by 50 to 80 threads to fill the fitting tolerance caused by the thickness of the hot-dip zinc layer.

Due to its anti-corrosion, wear-resistant, and high tensile strength, galvanized hexagonal bolts have a long service life and are therefore favored by engineers and builders. At the same time, galvanized hexagonal bolts can also be customized in different specifications and sizes to meet the needs of different engineering and construction projects.