The main factors affecting the coating thickness in hot-dip galvanizing design include: the composition of the base metal, the surface roughness of the steel, the content and distribution of active elements silicon and phosphorus in the steel, the internal stress of the steel, the geometric dimensions of the workpiece, and the hot-dip galvanizing process. Current international and domestic hot-dip galvanizing standards divide the sections according to the thickness of the steel. The average thickness and local thickness of the zinc coating should reach the corresponding thickness to determine the corrosion resistance of the zinc coating. For workpieces with different steel thicknesses, the time required to reach thermal equilibrium and zinc-iron exchange equilibrium varies, resulting in different coating thicknesses. Typically, electroplated zinc layers are 5-15μm thick, while hot-dip galvanized layers are generally 35μm or thicker, and can even reach 200μm.

Answers

• 
  What is the coating thickness for hot-dip galvanizing? 11/12/2025 13:27:13
• 
  What is the difference between yield strength and tensile strength in steel? 11/12/2025 10:13:55
• 
  HELLO WE ARE LOOKING FOR COLD ROLLED ROUND BAR 1045 SIZE 1" 1-1/2" 2" CAN YOU PROVIDE THESE? 10/12/2025 16:23:54
• 
  How to test whether the material properties of stainless steel plates meet the standards? 08/12/2025 01:38:29
• 
  What is the highest temperature that directly buried prefabricated insulation pipe can withstand? 05/12/2025 17:20:39