Galvanizing ASTM A193 Grade B7 Stud Bolts

Hot-dip galvanized studs, also known as hot-dipped galvanized studs, are produced by removing oil and rust from the studs, resulting in a clean and wetted surface that is immediately immersed in the molten zinc bath.

The process involves forming a zinc coating on the surface of the workpiece by immersing it in a molten zinc plating bath.

Cold galvanizing, on the other hand, entails suspending workpieces that have undergone oil and rust removal, ensuring they are pollution-free and wetted, onto the cathode in a specialized electroplating tank. These workpieces serve as anodes. Through the application of a DC power supply, zinc ions migrate from the anode to the cathode, depositing on the workpiece and forming a zinc layer.

Hot-dip galvanized Stud coatings are relatively thick, typically ranging from 30 to 60 microns, offering high anti-corrosion capabilities. They are suitable for steel parts exposed to outdoor conditions such as highways, bridges, and power towers. Examples include ASTM SA193-B7 Galvanized High Strength Full Thread Studs.

These studs are ideal for long-term rust resistance applications like road fences, power towers, and large-sized fasteners. In the past, hot-dip galvanization was commonly used for iron water pipes.

Due to their high strength and corrosion resistance, hot-dip galvanized bolts are increasingly favored for use in power towers, signal towers, and highway guardrails.