Hot Dipped Galvanized Steel Sheet Coil DX51D DX52D DX53D 0.3 - 3.0mm

PROCESS TYPES

Types of Galvanizations

There is a wide variety of galvanization types for corrosion protection. Each of these types has its unique performance and characteristics.

Following is a brief description of the various types of galvanizations.

Hot-Dip Galvanization

Hot-dip galvanization is the most widely used method of galvanization. Just as its name suggests, it involves the dipping of the steel in molten zinc.

The pool of molten zinc often maintains a temperature of about 860°F (460 °C).

After proper cleaning of the base metal chemically, it gets fluxed to eliminate residual oxides.

A metallurgical bond begins to form between the zinc and the intended metal.

After pulling the metal from the bath, the pure zinc mixes with oxygen from the atmosphere to form zinc oxide.

Then, the zinc oxide reacts with carbon dioxide to form zinc carbonate.

The zinc carbonate makes the final coating on the base metal.

Electro Galvanization

Unlike the hot-dip method, this type does not use a molten zinc bath. Rather,

it uses an electrical current in an electrolyte solution to transfer the zinc ions into the metal.

The positively charged zinc ions are reduced electrically and deposited on the charged material.

It offers the benefit of precise and uniform coating thickness.

Specification And Size

:SGHC
SGHD

Hot-rolled Base:
SGHC

Cold-rolled Base:
SGCC

Grade 65(450):
0.6~3.0mm;