Hot-dip galvanized threaded flanges

Galvanizing is divided into hot galvanizing and cold galvanizing. Hot dip galvanizing is an effective way of metal anti-corrosion. It is to melt the zinc ingot at high temperature, put some auxiliary materials into it, and then dip the pipe into the galvanizing tank, so that a layer of zinc layer is attached to the pipe, so as to achieve the purpose of anti-corrosion. Hot dip galvanized point lies in his strong anticorrosion ability, the adhesion and hardness of galvanized layer is good. Cold galvanized: zinc is less, is the use of electrolysis to make the surface of metal or other materials attached to a layer of metal film process. The process of forming uniform, dense and good bonding force metal layer can prevent corrosion, improve wear resistance, electrical conductivity, reflective and enhance the role of beauty.

Our company recently exported a batch of hot-dip galvanized threaded flanges made of A105N in ASME B16.11 standard to Singapore. Please look at the picture below.

ASTM A105N B16.11 Galvanized Threaded Flanges

ASTM A105N B16.11 Galvanized Threaded Flanges

Although hot dip galvanized appearance is not cold galvanized fine and bright, uniform coating. But the zinc layer thickness of hot dip galvanized is dozens of times of cold galvanized. Corrosion resistance is also dozens of times that of electro-galvanizing. Hot dip galvanized steel parts suitable for outdoor work, as well as more “rough” workpiece long-term rust prevention.

If you have any inquiry about galvanized flanges, please do not hesitate to contact me, thank


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