1. Galvanized flat steel sheet description:
Galvanized flat steel sheet is a process that involves coating metals such as steel and iron with a thin layer
of zinc. Since the zinc interacts more readily with oxygen than iron or steel do, it will tend to corrode first
and protect the underlying metal. Galvanized flat steel sheet is typically a multiple step process that requires
a metal workpiece to be fluxed in molten or aqueous zinc ammonium chloride before a layer of zinc is bonded
to it. The pure zinc layer then turns into zinc oxide when it is exposed to oxygen, and finally zinc carbonate
after exposure to carbon dioxide.
2. Galvanized flat steel sheet technical process:
After cleaning and acid pickling, the steel coil is submerged in melted zinc, a chemical reaction permanently
bonds the zinc. The zinc actually permanently becomes a part of it and the successive
Layers are a mixture of zinc and iron. Galvanized falt steel sheet is a special type of steel coil used
In a number of different applications within fabrication and manufacturing environments
3. Galvanized flat steel sheet flow chart
Decoiler--- Shearer ----welder ----pre-treatment ----entry looper--- annealing furnace--- zinc pot
---- air cooling tower ----water cooler--- leveller---- post treatment ---exit looper crimper.
4. Galvanized flat steel sheet main usage scope:
Galvanized flat steel sheet is widely used in home appliances, kitchen utensils, handicrafts,
construction formwork, granary, revealed rain, chimneys, roof tile, fire shutter doors, construction
Industry, as raw material for the production of corrugated panels, fencing products, drywall
Panel profiles, ventilation systems etc.
5. Galvanized flat steel sheet advantages:
1) Low iron loss, high magnetic flux strength, comes up to the international advance standard
2) Slight thickness difference between the horizontal and the longitudinal direction, promising the
high lamination factor
3) Processing Performance: Easily punched and cut, high dimensional accuracy
4) Insulating coating: Uniform color, good insulation, strong adhesively, high heat resistance,
high imputrescibility
5) Smooth surface, no rust, no rolling marks, no cold lap, no crease, no bubble cell, no delaminating defects
Standard |
Steel Grades |
Application |
GB/T 2518-2004 |
01 |
Common commercial application |
02 |
For mechanical engagement |
03 |
For stamping |
04 |
For deep drawing |
220,250,280,320,350 |
For structural components |
JIS G 3302-1998 |
SGCC |
Common application |
SGCD1 |
For stamping |
SGCD2 |
For deep drawing |
DIN EN 10142-2000 |
DX51D+Z |
For common application and mechanical engagement |
DX52D+Z |
For stamping |
DX53D+Z |
For deep drawing |
DIN EN 10147-2000 |
S220GD+Z |
For structural components |
S250GD+Z |
S280GD+Z |
S320GD+Z |
S350GD+Z |