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Colour coated steel/galvanized steel
Name：Colour coated steel/galvanized steel
Material：SGCC,SGCD, SGC340, SGC570, ASTM A653 CS Type, ASTM A653 SS550, DX51D, DX52D, DX53D, etc.
Standard：EN10142,EN10147,EN10292,EN10214, EN10215, JIS G3302, JIS G3321,JIS G 3317, ASTM A653, ASTM A792, ASTM A875
Thickness：Thickness: 0.3 - 2mm
DeliveryTime：15-30 days, depending on the quantity
PaymentTerms：T/T, 100% Irrevocable L/C at sight
Galvanized steel is the steel plate surface coated with a layer of zinc to prevent the steel plate surface from corrosion to extend its service life, the zinc coated steel is called galvanized steel. Galvanized steel can be devided into hot dip galvanized steel and electro-galvanized steel according to the production technology.
Due to the Electric galvanizing technology is not environment- friendly, presently, hot dip galvanizing technology is the most adopted in the world.
Specification of hot-dip galvanized steel we can offer:
|Coating types||Zinc coat(Z)|
|Zinc-iron alloy coating(ZF)|
|Surface structure||Zinc coat||Normal spangle|
|Spangle free/Zero spangle|
|Zinc-iron alloy coating||Regular spangle|
Surface treatment of hot-dip galvanized steel we can offer : chromating, oiled, phosphating, etc.
Zn-coat thickness(g/m2): 40, 60, 80, 90,100, 120, 140,180, 200, 250, 275 and so on.
Colour-coated steel/Prepainted steel
Color coated steel/Prepainted steel is steel products that take cold rolled steel or galvanized steel as steel substrate, go through the surface pretreatment (degreasing, cleaning, chemical conversion treatment), then was continuously coated with paint (roller coating method), finally go throught the process of baking and cooling.
Currently, the cold rolled(CR) steel substrate is not common, galvanize(GI) steel substrate and Galvalume(GL) steel substrate are mostly used.
Specification of colour coated steel/Prepainted steel we can offer:
|Steel substrate||hot-dip zinc-coated (Z)|
|hot-dip zinc-iron alloy coated steel (ZF)|
|hot-dip zinc-aluminum alloy coated steel (ZA)|
|hot-dip aluminum-zinc alloy coated steel (AZ)|
|silicon modified polyester (SMP)|
|high-durability polyester (HDP)|
|polyvinylidene fluoride (PVDF)|
|Painting structure||top side painted twice, bottom side painted once (2/1)|
|both top side and bottom side painted twice (2/2)|
|Surface structure of steel substrate||Minimized spangle|
|Spangle- free/Zero spangle|
Diagram of colour- coated/Prepainted steel structure
Category and usage
Category and usage of colour- coated/prepainted steel
Building prepainted steel plate/coil Antistatic prepainted steel Thermal control prepainted steel Easy-cleaning prepainted steel
Elevator prepainted steel plate/coil Household appliances prepainted steel plate/coil Laminated, printed steel coil for decoration
Selection of colour-coated/prepainted steel
Type and coating weight of steel substrate: The type and coating weight of steel substrate are the most important factors that influence the corrosion resistance of colour- coated/prepainted steel coil. The selection should determined in accordance with the usage, envrionmental corrosion, service life and durability.For example, in the severe industrial or humid coastal area, the zinc coating of colour- coated/prepainted steel should be more than 180g/m2. However, when used for decoration or household appliances, the colour-coated/prepainted steel with normal zinc coated steel substrate can be adopted.
Types of painting: painting is the key factor that influence the usage of colour-coated/prepainted steel. For example, in the humid coastal area, the higher durability painting was suggeated such as PVDF, HDP; in the seriously polluted industrial area, you should not only take the corrosion resistance but also pollution resistancein into consideration, PVDF painting colour-coated/prepainted steel or easy-cleaning colour-coated/prepainted steel arte more suitable.
Grades and usage of base metal
|Grades and usage of colour-coated plate/coil||Grades,standard,type of base plate|
|TSGCC,TSGCC-GC||In general use||SGCC||JIS G3302||Hotgalvanized steel plate/coil|
|TSGCD1||use for Stamping||SGCD1||JIS G3302|
|TDX53D+Z,TDX54D+Z||use for Deep drawing|
|TSGC340,TSGC340-GC||use for Structure||SGC340||JIS G3302|
|TS220GD+Z,TS220GD+Z-GC||use for Structure||S220GD+Z||EN 10326|
|TSPCC||In general use||SPCC||JIS G3141||Cold-rolled steel plate/coil|
|TSPCD||use for Stamping||SPCD||JIS G3141|
|TSPCE||use for Deep drawing||SPCE||JIS G3141|
Equivalent Grades List of Hot-dip galvanized steel
Standard: EN ASTM SAE API DIN JIS