Colour coated steel/galvanized steel - Henan Seed Steel Metal Materials Co., Ltd.

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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

Price:FOB/CIF/CFR

DeliveryTime:15-30 days, depending on the quantity

PaymentTerms:T/T, 100% Irrevocable L/C at sight

MinimumOrderQuantity:N/A

Hot Products


EN: DX51D+Z/ZF/ZA/AZ, DX52D+Z/ZF/ZA/AZ,  DX53D+Z/ZF/ZA/AZ, S250GD+Z/ZF/AZ/ZA ,  S280GD+Z/ZF/ZA/AZ,        

      S320GD+Z/ZF/ZA/AZ ,  S350GD+Z/ZF/ZA/AZ,  S550GD+Z/ZF/ZA/AZ  

ASTM:  A653 CS, SS340, SS550

JIS: SGCC,  SGCD1 , SGC340,   SGC570,

Overview


Galvanized steel

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:

Item
Type
Coating types
Zinc coat(Z)
Zinc-iron alloy coating(ZF)
Surface structure
Zinc coat
Normal spangle
Minimized 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:

Item
Type
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)
Coating surface
coated
embossed
printed
Painting
polyester(PE)
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/coilGrades,standard,type of base plate
GradeusageGradestandardtype
TSGCC,TSGCC-GCIn general useSGCC JIS G3302Hotgalvanized steel plate/coil
TDX51D+Z,TDX51D+Z-GCDX51D+ZEN 10327
TSGCD1use for StampingSGCD1JIS G3302
TDX52D+ZDX52D+ZEN 10327
TDX53D+Z,TDX54D+Zuse for Deep drawing

DX53D+Z

DX54D+Z

EN10327
TSGC340,TSGC340-GCuse for StructureSGC340JIS G3302
TSGC400,TSGC400-GCSGC400
TSGC440,TSGC440-GCSGC440
TSGC490,TSGC490-GCSGC490
TSGC570,TSGC570-GCSGC570
TS220GD+Z,TS220GD+Z-GCuse for StructureS220GD+ZEN 10326
TS250GD+Z,TS250GD+Z-GCS250GD+Z
TS280GD+Z,TS280GD+Z-GCS280GD+Z
TS320GD+Z,TS320GD+Z-GCS320GD+Z
TS350GD+Z,TS350GD+Z-GCS350GD+Z
TS550GD+Z,TS550GD+Z-GCS550GD+Z
TSPCCIn general useSPCCJIS G3141Cold-rolled steel plate/coil
TDC01DC01EN 10130
TSPCDuse for StampingSPCDJIS G3141
TDC03DC03EN 10130
TSPCEuse for Deep drawingSPCEJIS G3141
TDC04DC04EN 10130


Equivalent Grades List of Hot-dip galvanized steel


EN
ASTM A653M-04aJIS
DX51D+ZCSSGCC
DX52D+ZFSSGCD1
DX53D+ZDDSSGCD2
DX54D+Z-SGCD3
S250GD+ZSS255SGC340
S280GD+ZSS275-
S320GD+Z--
S350GD+ZSS340SGC440
S550GD+ZSS550SGC570


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