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.

Specifications

Hot-rolledBase
:SGHC SGHD
SGH
340
400
440
490
540

Cold-rolled Base: SGCC
SGCD
1~3
SGC
340
400
440
490
570

Hot-rolled Base: SGHC
SGHD
SGH
340
400
440
490
540

Cold-rolled Base:
SGCC
SGCD
1~3
SGC
340
400
440
490
570

DS
DDS
CS TYPE  A, B, C
FS TYPE A, B
SS GRADE
33(230)
37(255)
40(275)
50(340)CLASS
1~3
80(550)CLASS
1~3

G1~G3
G250
300
350
400
450
550

DX51-52-53D
S220GD
(250
280
320
350
550)

Thickness of Base Steel
 (mm)

SGCD1~3:
0.27~2.0mm
SGCC/SGC:
 0.19~2.0mm

SGCC,SGC340:
0.18~3.0mm;
SGCD1~3:
 0.25~2.0mm;
SGC400, 440:
0.229~3.0mm;
SGC490:
1.8~3.0mm;
SGC570: 
0.229~2.2mm

DS: 0.27~2.0mm;
DDS: 
0.25~2.0mm;
CS/FS:
0.19~4.50mm;
SS GRADE 33~80: 0.19~4.50mm;
CS TYPE A, B, C,
 Grade 33, 37:
0.18~3.0mm;
FS TYPE A, B:
0.295~2.0mm;
Grade 40, 50:
 0.229~3.0mm;
Grade 55(380):
0.35~3.0mm;
Grade 60(410):
0.47~1.6mm;
Grade 65(450): 0.6~3.0mm;
Grade 80:
0.229~2.2mm

G1:
0.19~4.50mm;
G2&G3: 
0.27~2.0mm;
G250~550GD:
0.19~4.6mm;
G300:
0.229~2.3mm;
G350: 
0.229~3.0mm;
G450: 
0.6~3.0mm;
G500:
1.1~2.5mm;
G550:
0.229~2.2mm

DX51D:
0.19~4.50mm;
S220~550GD:
0.19~4.6mm;
S250GD:
 0.18~2.02mm;
DX52D: 
0.295~2.0mm;
DX53D, 54D:
 0.25~2.0mm;
S280GD, S350GD:
0.229~3.0mm;
S320GD:
0.229~2.3mm;
S550GD: 
0.229~2.2mm

                                                                ✱The table above shows the widest range of product dimensions. For a detailed acceptable order range, please contact us.

Automotive Industry

The use of galvanized steel on vehicles dates many years back. Using zinc-coated bodies on automobiles has become the norm of car manufacturing.
The rust-resistant nature of this material makes it a great marketing tool in the competitive market.
Several makers leverage them to offer anti-rust warranties to their customers.

Telecommunication Industry

Maintaining phone lines isn’t an easy job. They require the toughest and most reliable materials for success.Galvanized sheet metal offers its uses on phone wiring and equipment boxes.
Therefore, there will be decreased danger of injury and reduced maintenance cost.

Electric Equipment and Appliances

When you look at most electric appliances around you, you may be able to notice the unique features of their casing.
Most casings for electrical equipment use galvanized steel material. In fact, it is not surprising that some interior parts of these appliances are made from this steel material.

Building and Construction Industry

The sturdiness and durability that galvanized sheet metal offers make it popular in the construction industry.
It has been employed in various commercial and residential projects to the highest level.