Changsha Xiangjia Metal Materical Co., Ltd.

Both   hot-dip galvanizing and cold-galvanizing   are zinc processing techniques. Hot-dip galvanizing requires melting zinc, while cold-galvanizing adopts an electrolytic method. They are very different during production, but they are similar in the performance of the finished product. So how to distinguish hot-dip galvanizing and cold-galvanizing? What are the differences between them in which aspects? Let’s understand together! The differences between hot-dip galvanizing and cold-galvanizing can be distinguished from several aspects. First, the differences between hot-dip galvanizing and cold-galvanizing. Different thicknesses. The zinc layer of hot-dip galvanizing is relatively thick itself, generally with a thickness of more than 10 um, so it has good anti-corrosion ability. Although the surface is bright, it is slightly rough and zinc flowers may appear. While the zinc layer of electro-galvanizing is very thin, only about 3-5 um in thickness. Although the surface is smoot...

Galvanizing   is a process of zinc coating, with hot-dip galvanizing involving melting zinc and electro-galvanizing using an electrolytic method. While their manufacturing processes differ significantly, the final products may appear similar. So, how can we distinguish between hot-dip galvanizing and electro-galvanizing? Let's delve into it. Firstly, Distinction in Processes: Hot-dip galvanizing involves multiple processing steps, including oil removal, acid pickling, immersion in a flux bath, drying, and finally immersion in a molten zinc bath for a specific duration. On the other hand, electro-galvanizing, also known as zinc electroplating, utilizes an electrolytic process. After oil removal and acid pickling, the workpiece is immersed in a solution containing zinc salts. By connecting to the electrolytic equipment, zinc deposits onto the workpiece via directed movement of current between positive and negative poles. Secondly, Differentiation in Appearance: Hot-dip galvanized coa...

There are two types of galvanizing for   seamless steel pipes : hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing has wet method, dry method, lead-zinc method, redox method, etc. The difference between them is that what is used to activate the surface of the pipe body to improve the quality of galvanizing after the steel pipe is acid dipped and cleaned. The dry method and redox method are mainly used in the production. The surface of the zinc layer of electro-galvanizing is very smooth and dense, with uniform structure which make steel pipe has good mechanical properties and corrosion resistance. Electro galvanizing is complex on technically, it is used for single-sided coating, double-sided coating with different thicknesses on the inner and outer surfaces, and galvanizing of thin-walled pipes. Changsha Xiangjia Metal Materical Co., Ltd.  specializing in the production and sales of seamless pipes, alloy pipes, stainless steel pipes, etc., welcome to call us fo...