Prepainted Galvanized Steel Coil

When steel components are used to make more complex finished products, they can be galvanized before the product is assembled. This is called pre-galvanizing, or "pre-galvanizing". It may also be referred to as "in-line", "continuous" or "rolled" galvanizing.

  Product Description

Steel components (such as sheets or wires) are galvanized using an automated process before they are cut to size. This automated process will vary depending on the type of galvanized part. In general, steel components are immersed in a "galvanizing bath" of molten zinc for a short period of time. After the steel is removed from the bath, excess zinc is removed using a mechanical wiper, air knife, or steam. This leaves a relatively thin layer of galvanizing.

Product NameHot Dipped Galvanized & Galvalume Steel Coil,Zinc Coated Steel ,GIHDGI,aluzinc Steel
StandardEN10346, JIS G3302, ASTM A653,AS 1397,GB/T 2518,ASTM A792
Steel GradeDx51D, Dx52D, Dx53D, DX54D,DX55D,DX56D,DX57D, S220GD, S250GD, S280GD, S320GD,S350GD, S390GD,S420GD,S450GD,,S550GD, SGHC, SGH340,
SGH400, SGH440, SGH490,SGH540, SGCC,SGCH,SGCD1, SGCD2, SGCD3, SGCD4,SGC340, SGC400 , SGC440, SGC490,SGC570;
CS-A,CS-B,CS-C,Grade 33,grade 37.grade 40,garde 50,grade60,grade70,grade80
G1,G2,G3,G250,G300,G450,G550
As Requirement
TypeCoil/Sheet/Plate/Strip
Thickness0.12mm-6.0mm or 0.8mm/1.0mm/1.2mm/1.5mm/2.0mm
Width600mm-1800mm or 914mm/1000mm/1200mm/1219mm/1220mm/1524mm
Zinc CoatingZ30g/m2-Z600g/m2&AZ20-AZ220
Surface StructureNormal spangle (N),, spangle-free(FS),Zero Spangel
Surface StructureOiled (O),Passivated(C),Passivated and oiled (CO) ,Sealed (S),Phosphate (P),Phoaphte and oiled (CO)/AFP
Coil Weight3 Tons -8Tons
Coil ID508mm/610mm


Chemical Composition

StandardGradeCSiMnPSTi
Forcold FormingChinese StandardDX51D+Z0.120.500.600.1000.0450.30
DX52D+Z0.120.500.600.1000.0450.30
DX53D+Z0.120.500.600.1000.0450.30
DX54D+Z0.120.500.600.1000.0450.30
DX56D+Z0.120.500.600.1000.0450.30
DX57D+Z0.120.500.600.1000.0450.30
Forcold FormingJapanese StandardSGCC0.150.500.800.0500.0300.025
SGCD1
SGCD2		0.12
0.10		0.50
0.50		0.60
0.45		0.040
0.030		0.030
0.030		0.025
0.025
SGCD30.080.500.450.0300.0300.025
SGCD40.060.500.450.0300.0300.025
For StructureJapanese StandardSGC3400.250.501.700.2000.0350.025
SGC400
SGC440		0.25
0.25		0.50
0.50		1.70
2.00		0.200
0.200		0.035
0.035		0.150
0.150
SGC4900.300.502.000.2000.0350.025
SGC5100.300.502.500.2000.0350.025
For StructureAISI StandardS220GD+Z0.200.600.700.1000.0450.025
S250GD+Z0.200.600.700.1000.0450.025
S280GD+Z0.200.600.700.1000.0450.025
S320GD+Z0.200.600.700.1000.0450.025
S350GD+Z0.200.600.700.1000.0450.150
S550GD+Z0.200.600.700.1000.0450.150

 

Mechanical Properties

GradeYield Strength MPa≥Tensile Strength MPa≥Elongation A%≥
DX51D Z/ZM/AZ/AM240-380270-50022
DX52D Z/ZM/AZ/AM140-300270-42026
DX53D Z/ZM/AZ/AM140-260270-38030
DX54D Z/ZM/AZ/AM120-220260-35036
S220GD Z/ZM/AM22030020
S250GD Z/ZM/AZ/AM25033019
S280GD Z/ZM/AM28036018
S300GD A/AM30038018
S320GD Z/ZM/AM32039017
S350GD Z/ZM/AZ/AM35042016
S450GD A/AM45048015
S550GD Z/ZM/AZ/AM550550-


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