SGCC GI Galvanized Steel Coil
SGCC refers to steel grades for hot-dip galvanized steel sheets and strips, specifically, hot-dip galvanized steel sheets and strips made from ordinary carbon structural steel.
Production process
Unwinding and Welding: Unwinding of steel coils to provide the required steel strip for continuous operation and welding of the strip tail of the forward strip to the strip head of the backward strip to ensure continuous production of the unit.
Degreasing and Cleaning: The cleaning section cleans the surface of the strip to remove rolling oil and iron powder to obtain good plating adhesion and surface quality.
Annealing: Recrystallisation annealing of the strip in rolled hard state to obtain good mechanical properties of the product, by controlling the atmosphere in the furnace to obtain good plating properties of the strip.
Air Knife Zinc Layer Control: Control of the thickness of the coating on the strip surface by blowing gas (usually air or pure nitrogen) onto the surface of the strip after exiting the zinc pot.
Alloying: Process of heating the galvanized strip to obtain a zinc-iron alloy coating.
Levelling and Straightening: Rolling of the strip with small rolling forces to eliminate the yield plateau of mild steel, improve the strip properties and obtain the desired strip surface roughness.
Post-treatment: Passivation or other chemical surface treatment of the strip to obtain the corrosion resistance, lubrication and other properties desired by the user.
Trimming: Trimming the strip as required to obtain the appropriate width accuracy.
Oiling: Oil the strip steel to obtain certain anti-rust and lubrication properties.
Through the above steps, SGCC galvanized steel coil products can be produced to meet the requirements.
- Product Specifications
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Commodity |
Cold rolled galvanized sheet metal gi steel strips |
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Grade: |
Q195, Q235 |
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SGCC, SGCH,SGC340 SGC400 SGC440 SGC490 SGC570 |
|
|
SGHC SGH340 SGH400 SGH440 SGH490 SGH540 |
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|
DX51D DX52D DX53D DX54D |
|
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S220GD S250GD S280GD S320GD S350GD S400GD S500GD S550GD |
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Standard: |
ISO,JIS,ASTM,AS EN |
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Zinc coated: |
40-300g/m2 |
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Surface treatment: |
Chromated and oiled, and ant-ifinger |
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Hardness: |
Softy , half hard and hard quality |
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Thickness: |
0.12-5.0mm |
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Width: |
90-1500mm |
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Supply Ability: |
40000MT/month |
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Coil weight: |
3-8MT/Coil or as your request |
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MOQ: |
5MT |
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Packaging: |
Export standard, seaworthy |
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Substrate: |
Cold rolled Substrate,Hot rolled Substrate |
|
ID: |
508mm or 610mm |
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GNEE STEEL have established long-term relationships with many steel factories for decades. Our decades of experience in billet and strip production ensure stable and strong relationships with all steel factories. Based on this advantage, we can provide our customers with the best price while ensuring the best quality of steel products and one-stop steel products solution service domestically and abroad.
