G40 Galvanized Coil

Dip the sheet into the molten zinc bath to make a layer of zinc sheet stick to the surface. The main use of continuous galvanized process production, that is, into a roll of steel continuous immersion in the melting of zinc plating tank to make galvanized steel; Alloyed galvanized steel sheet.

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Dip the sheet into the molten zinc bath to make a layer of zinc sheet stick to the surface. The main use of continuous galvanized process production, that is, into a roll of steel continuous immersion in the melting of zinc plating tank to make galvanized steel; Alloyed galvanized steel sheet. This kind of steel plate is also made by hot dip method, but after the groove, it is heated to about 500℃ immediately, so that it produces an alloy coating of zinc and iron. This galvanized coil has good coating tightness and weldability.

Product Name Galvanized Sheet
MaterialASTM/AISI/SGCC/CGCC/TDC51DZM/TDC52DTS350GD/TS550GD/DX51D+Z Q195-q345SGCH/DX51D+Z,DX52D+Z,DX53D+Z,DX54D+Z,S220GD+Z/A653
Standard     AISI,ASTM,BS,DIN,GB,JIS
Grade       SGCC/CGCC/TDC51DZM/TDC52DTS350GD/TS550GD/DX51D+ZEN 10142,EN10147,EN 10292,JIS G3302, ASTM A653/A653M, BQB 420
Width      600-1500mm or as required
Thickness   0.12-4.0mm or as required
Length        As customer's requirement
Surface Structure    Regular spangle, Minimal Spangle, Zero Spangle, Big Spangle
Surface Treatment  Oiled and chromated, Anti fingerprints
Zinc Coating(g/m2) 30-275g/m2
Coil Diameter      508mm/610mm
Coil Weight        3-5 Tons or as required
Certification        ISO , SGS , BV
Technique          Cold Rolled / Hot Rolled
Edge              Mill Edge/ Silt Edge（磨边/槛边）
Quality            Mill Test Certificate supplied with the shipment ,third party inspection is acceptable
PackageStandard Ocean Freight PackageInside: Anti-rust paper,Plastic. Outside: Steel inner and outside guard board,Circle . Iron guard board for both side,Outside iron guard board, 3 Radial Strapping and 3 Latitude

Chemical composition

AlZnSiFeCuCdPbSnNiTi +Ba+Cr
55-5841-431.5-20.250.030.050.010.050.050.05

 Mechanical behavior

gradeYield strength, MPaTensile strength of MPaelongation 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+AZ/AM30038018
S320GD+Z/ZM/AM32039017
S350GD+Z/ZM/AZ/AM35042016
S450GD+AZ/AM45048015
S550GD+Z/ZM/AZ/AM550550－

 Galvanized surface options

Coating typeRecommended coating weight
Aluminum zinc alloy30/40/50/60/75/90/100/150
A: The coating mass is 50g/㎡, which is approximately equal to the coating thickness of 13.3pm.


Project Classification Symbol 
Coating typeAluminum zinc alloyAZ
Surface finishregular sequinsR
Minimize sequinsM
Skin passS
Surface treatmentChromate passivationc
Non-chromate passivationC5
Chromate passivation + oilingCO
Chrome-free passivation + oilingCO5
Anti-fingerprintN
Chromate-free anti-fingerprintN5
Chromate-free,highly weather-resistant and anti-fingerprintNW
Oiling0
No treatmentU

 Material comparison

Chinese standardEuropean standardAmerican standardJapanese standard
DC51D+AZDX51D+AZCS Type B, Type CSGLCC
DC52D+AZDX52D+AZDSSGLCD
S250GD+AZS250GD+AZ255-
S300GD+AZ---
S350GD+AZS350GD+AZ345Class1 SGLC490
S550GD+AZS550GD+AZ550SGLC570




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