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Galvanized Steel Sheet

Henan Anson Steel Co., Ltd

Galvanized Steel Sheet

Place of Origin : China

Brand Name : Anson

Price : 550USD-850USD

Packaging Details : standard export packing,as cleint's requirment

Delivery Time : 20 days

Payment Terms : TT/LC

Supply Ability : 10000 tons/month

MOQ : 5 tons

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As we all know ,galvanized steel sheet, also called zinc coated steel sheet, owns many merits like strong coating adhesiveness, high erosion-resistance, accurately controlled zinc coating thickness, high size precision, flat profile and good mechanical, processing and welding performance. Therefore, the galvanized steel sheet is not best sale in the international market but favored by the customers. Category of Hot-dip galvanized products: commercial purpose, drawing, deep drawing, extra deep drawing, supreme extra deep drawing, structure, and cold forming.
The products of these lines are widely used in electrical household appliance, architecture, transportation, furniture, auto parts etc.

1. Applications and features are given as following table

Steel GradeApplicationFeature
DC51D+Z (St01Z, St02Z, St03Z) , DC51D+ZFCommercial purposeLow carbon and/or ultra-low carbon steel
DC52D+Z (St04Z), DC52D+ZFDrawing
DC53D+Z (St05Z), DC53D+ZFDeep drawingUltra-low carbon steel
DC54D+Z (St06Z), DC54D+ZFExtra deep drawing
DD54D+Z (St06ZR)
DC56D+Z (St07Z), DC56D+ZFSupreme extra deep drawing

2. Available sizes:Nominal thickness: 0.30mm~3.0mm, nominal width: 800mm~1830mm Note: nominal thickness of a plate/strip is sum of base plate thickness and coating thickness.  
3. Chemical Composition %:

bse metal typeGradeCHEMICAL COMPOSITION %
cold rolled steel sheetDC51D+Z (St01Z, St02Z, St03Z) , DC51D+ZF≤0.10-≤0.50≤0.035
DC52D+Z (St04Z), DC52D+ZF≤0.08-≤0.45≤0.030
DC53D+Z (St05Z), DC53D+ZF≤0.08-≤0.40≤0.030
DC54D+Z (St06Z), DC54D+ZF≤0.01≤0.10≤0.30≤0.025
DC56D+Z (St07Z), DC56D+ZF≤0.01≤0.10≤0.30≤0.025
hot rolled steel sheetDD51D+Z (St01ZR, St02ZR)≤0.10-≤0.50≤0.035
DD54D+Z (St06ZR)≤0.01≤0.10≤0.30≤0.025

4. Mechanical performances and coating adhesiveness

GradeMechanical performancesCoating Adhesiveness
Yield Strength MPTensile Strength MP ≥After Breakage Percent Elongation (LO=80mm,b=20mm)% ≥Bending Center Diameter in Following Coating Weight (g/m2)c (a=plate thickness)
Under following nominal thickness mm≤140/140>140/140~175/175>175/175
DC51D+Z (St01Z, St02Z, St03Z) , DC51D+ZF-270~50020220a1a2a
DC52D+Z (St04Z), DC52D+ZF140~300270~4202426
DC53D+Z (St05Z), DC53D+ZF140~260270~3802830
DC54D+Z (St06Z)140~220270~3503436
DC56D+Z (St07Z)120~180270~3503840

5. Coating weight range

coating formApplicable Surface StructureWeight Range of Following Coatings a g/m2 (A/B)
Zinc CoatingZn-Fe Alloy Coati
equally coatingZ,X,G,GX,N,R40/40~225/22530/30~90/90
differential coatingN,R30~150 (each side)-
a. 50 g/m2coating weight is equivalent to about 7.1μm. b. max. differential coating thickness ratio is 1:3.

6. Surface structure

Surface structureCode No.FeaturesApplication
Conventional spangleZSpangles condensated on zinc coating under normal conditions after galvanizing.Commercial purposes
Small spangleXSurface in spangles smaller than conventional ones and due to controlled condensation of zinc coating.Applications where conventional spangles cannot meet the surface appearance requirements.
Skin passed spangleGSurface structure after special skin pass treatment.Applications of high surface quality requirements, such as color coating base plates.
Skin passed small spangleGX
Zero spangleNNo visible spangles on coating surface as a result of a special production process.-
Zn-Fe alloyRNo spangle, gray, normally matteApplicable to further painting

7. Surface treatment

1 Chromate treatment (L)Chromate treatment is a chemical treatment with an aim to prevent white rusts formed on product surfaces during transportation and storage.
2 Oiling (Y)Oiling is to prevent white rusts formed on product surfaces during transportation and storage.
3 Chromate treatment+ Oiling (LY)3 Chromate treatment+ Oiling (LY) This treatment with oiling after surface chromate treatment is to further avoid the forming of white rusts.

8. Surface quality

Code No.Features
FB (O3)t is allowed for the existence of small erosion spots, dark spots, strip marks, minor chromate treatment defects and small zinc particles.
FC (O4)No erosion spot is allowed. However, it is allowed for the existence of light impression, scratches, zinc flow ripple marks, minor chromate treatment defects in small range, while the other side must reach FB requirements at least.
FD (O5)One side of relatively good quality must further restrict on defects, namely appearance quality after painting is not affected, and the other side must reach FB requirements at least.

9. Steel grade reference list of the standards, the cited standards and other standards

Q/BQB 420-2003EN10142:2000

EN 10142:1990
EN 10147:1991
DC51D+Z (St01Z, St02Z, St03Z) , DC51D+ZFDC51D+Z, +ZFFeP02GZ, ZFSGCCCS type C
DC52D+Z (St04Z), DC52D+ZFDC52D+Z, +ZFFeP03GZ, ZFSGCCCS type A, type B
DC53D+Z (St05Z), DC53D+ZFDC53D+Z, +ZFFeP05GZ, ZFSGCD1FS type A, type B
DC56D+Z (St07Z), DC56D+ZFDC56D+Z, +ZFDX56D+Z, +ZF (SEW 021)SGCD3EDDS

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