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Original title: What is the production process for hot-dip galvanized bolts? A few days ago, a netizen asked Pulete about the production process for hot-dip galvanized bolts. In fact, there are many different types of hot-dip galvanizing processes. Today, Pulete will clarify this matter for that netizen based on the information provided by manufacturers of hot-dip galvanized bolts: https://inews.gtimg.com/newsapp_bt/0/12133007274/641 Hot-dip galvanized bolts, also known as hot-dip zinc-plated bolts, are produced by first cleaning the bolts to remove oil and rust, so that their surface is free of contaminants and ready for plating; thereafter, these bolts are immersed in a tank containing molten zinc, which results in the formation of a zinc coating on their surface. Within hot-dip galvanizing, there is also cold-galvanizing: in cold-galvanizing, workpieces that have been cleaned of oil and rust and are thus free of contaminants and well-saturated are hung on the cathode of a specialized plating tank, with zinc being used as the anode. A method in which a direct current power supply is connected, causing zinc ions at the anode to migrate toward the cathode and discharge there, thereby coating the workpiece with a layer of zinc. Hot-dip galvanized bolts have a thick coating, typically 30–60 microns, which provides good corrosion resistance. Steel components suitable for outdoor use, such as highway fences, power transmission towers, and large-sized fasteners – namely those relatively \"rough\" components – require long-term rust prevention. Earlier iron water pipes were also hot-dip galvanized. Due to their high strength and corrosion resistance, hot-dip galvanized bolts are increasingly becoming the preferred choice for bolts in power transmission towers, signal towers, and highway guardrails. Generally, for large-scale facilities or situations where frequent replacement is necessary, hot-dip galvanized bolts are sufficient to ensure a long service life. But are there any bolts that offer an even longer corrosion resistance than hot-dip galvanized bolts? Those are Dacromet bolts, which provide an additional 20 years of protection compared to hot-dip galvanized bolts. At this point, some readers might ask: how is hot-dip galvanizing carried out? The process of galvanizing bolts used in subway segments involves cleaning the bolts to remove rust, followed by immersion in a galvanizing bath for hot-dip treatment. After that, the bolts are shaped at high temperatures, and thus they are ready. It’s actually a fairly complex process, and it can also pose certain risks to the health of workers. If you want to learn more about hot-dip galvanized bolts, you can visit Pulete Fasteners. Pulite is waiting for your arrival at any time. Statement: The above text and images were compiled and published by PULITE Fasteners; the photos were taken by PULITE Fasteners. Please indicate the source if reproducing them.