Hight Quality Galvanzied Steel Coil for Building

Product Specifications

Prod Model:	0.125mm-5.0mm SGCC/SGCH
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Thickness:	0.12-0.8mm
Width:	610/716/824/914/1000/1200/1219/1200/1220/1250mmetc
Spangle:	No/ Small/ Big Spangle
Surface Treament:	Chromed Passivation/ Oiled/ Dry/ Anti-Finger Print
Model No.:	Dx51d+Z
Standard:	BS
Certification:	Bis CIQ
Surface Treatment:	Galvanized
Technique:	Cold Rolled
Application:	Container Plate
Edge:	Mill
Stock:	Not Stock
Steel Grade:	CGCC/ Dx1d

Product Description

Hot DIP Galvanized Steel Coil

1. Technical standard: ASTM A653, EN10142, JIS 3302
2. Grade: SGCC, DX51D, commercial quality
3. Thickness: 0.12-1.80mm(the most advantage thickness)
4. Width: 650/726/820/914/1000/1200/1219/1220/1250mm etc.
5. Surface treament: Dry/ oiled, passivation/ anti-fingerprint, Skinpassed
6. Spangle: No/ small/regular/ big spangle.
Galvanized sheet or coil is defined as a carbon steel sheet coated with zinc on both sides. Continuous hot dipping, or electro-galvanizing are the two processes used to produce galvanized sheet and coil. Generally speaking, the hot dip
Process consists of passing the steel through a bath of molten zinc. The electro galvanizing process consists of the application of zinc by electrolytic disposition.
The result is a layer of zinc tightly adhering to the base metal through an iron-zinc bonding layer.
A zinc coating is one of the most effective and economical methods of protecting bare steel from a corroding environment. The zinc not only serves as a barrier between the steel and the environment, it will sacrifice itself to protect the underlying steel sheet. Sacrificial, or galvanic protection occurs when two dissimilar metals are in contact and coupled with water and oxygen. Zinc corrodes preferentially to the iron in steel. This protection prevents corrosion of the steel at areas not covered with zinc. Thus, the spread of corrosion from cut edges, drill holes, etc. Is minimized.
Our Hot-dipped Galvanized products, as well as our Galvannealed (zinc-iron alloy coated) products are manufactured to ASTM A-653 specifications. Our Electrogalvanized products conform to ASTM A-879.

Commodity	Hot dip galvanized steel coil and sheet  (GI)
Techinical Standard:	JIS 3302 /  ASTM A653  /    EN10143
Grade	DX51D / DX52D/ DX53D/ S250, S280, 320GD
Types:	Commercial / Drawing / Deep Drawing / Structural  quality
Width	650/726/820/914/1000/1200/1219/1220/1250mm
Thickness	0.12-1.0mm (0.14-0.5mm is the most advantage thickness)
Type of  coating:	galvanized
Zinc coating	Z60-150g/m2
Surface treament	chromed / skinpass/ oiled/slightly oiled/ dry/  anti-fingerprint
Surface structure:	zero spangle / minimized spangle /  regular spangle/ big regular
ID coil	508mmor 610mm
Package:	Properly packed for ocean freight exportation  in 20' ' containers
Application:	Industrial panels, roofing and siding for painting
Price terms	FOB, CFR, CIF
Payment terms	20%TT in advance+80% TT or irrevocable 80%L/C at sight
delivery time	25 days after recepit of 20% TT
Remarks	Insurance is all risks
	MTC 3.1  will be handed on with shipping documents
	We accept SGS certificatation test

Grade	Chemical composition %
	C	Si	Mn	P	S	Alta	Ti	Nb
	No more than	No more than	No more than	No more than	No more than	No less than	No more than	No more than
DC51D+Z,DC51D+ZF	0.1	---	0.5	0.035	0.035	---	---	---
(St01Z,St02Z,St03Z)
Grade	Mechanical properties						plating  adhesion
	yield strength	tensile strength	n 90	r 90	Elongation %			Plating weight(g/m 2 )
	Mpa	Mpa	No less than	No less than	No less than			Bending diameter
								(a=thickness of slab)
					L 0 =80mm b=20mm
					Normal   thickness  mm
					≤ 0.7	>0.7		≤ 140/140	>140/140~	>175/175
									175/175
DC51D+Z(St01Z,St02Z,St03 Z), DC51D+ZF	---	270~500	---	---	20	22		0a	1a	2a
Exposure Test :						Salt Spray Test :
Environment	GI					Enviroment	GI Average Corrosion		AL-ZN  Average Corrosion
	Average corrosion
	g/m2 /y	μ  m/y					g/m2/y	um/y	g/m2/y	um/y
Tough Marine Climate	140	9.8				tough Marine Climate	140	9.8	16	2.2
Moderate Marine Climate	18	1.3				Modeerate Marine Climate	18	1.3	4	0.54
Industrial Climate	20	1.4				Industrial Climate	20	1.4	4.2	0.57
Countryside Climate	4	0.28				Countryside Climate	4	0.28	1.3	0.17
Plainness of hot dip galvanized substrate A.2.1 For steel sheet with a specified minimum yield strength less than 260MPa, the maximum plainness tolerance should be in conformity with the stipulations of Table A1.
MPa	Nominal width	Plainness (mm) for the nominal thickness as shown below
		Common precise PF.A			High-level precision PF.B
		<0.70	0.70~<1.60	1.60~3.0	<0.70	0.70~<1.60	1.60~3.0
<260	<1200	10	8	8	5	4	3
	1200~<1500	12	10	10	6	5	4
	≥1500	17	15	15	8	7	6
For steel sheet and steel strip with a specified minimum yield strength not less than 260MPa but less than 360MPa,and the grades of DC51+Z/Z  DD51D+Z /S550GD+Z/ZF), the maximum plainness tolerance should be in conformity with the stipulations of Table A2. Table A2
MPa	Nominal width	Plainness (mm) for the nominal thickness as shown below
		Common precise PF.A			High-level precision PF.B
		<0.70	0.70~<1.60	1.60~3.0	<0.70	0.70~<1.60	1.60~3.0
260~<360	<1200	13	10	10	8	6	5
	1200~<1500	15	13	13	9	8	6
	≥1500	20	19	19	12	10	9
Thickness tolerance for hot dip galvanized substrate
For steel sheet with a specified minimum yield strength less than 260MPa, the maximum thickness tolerance should be in conformity with the stipulations of Table A6.
Nominal thickness	Thickness tolerance while the widths are showed as follows
	Common precise PT.A			High-level precision PT.B
	≤1200	>1200~1500	>1500	≤1200	>1200~1500	>1500
0.30~0.40	±0.04	±0.05	±0.06	±0.030	±0.035	±0.040
>0.40~0.60	±0.04	±0.05	±0.06	±0.035	±0.040	±0.045
>0.60~0.80	±0.05	±0.06	±0.07	±0.040	±0.045	±0.050
>0.80~1.00	±0.06	±0.07	±0.08	±0.045	±0.050	±0.060
>1.00~1.20	±0.07	±0.08	±0.09	±0.050	±0.060	±0.070
>1.20~1.60	±0.10	±0.11	±0.12	±0.060	±0.070	±0.080
>1.60~2.00	±0.12	±0.13	±0.14	±0.070	±0.080	±0.090
>2.00~2.50	±0.14	±0.15	±0.16	±0.090	±0.100	±0.110
>2.50~3.00	±0.17	±0.17	±0.18	±0.110	±0.120	±0.130
For steel sheet and steel strip with a specified minimum yield strength not less than 260MPa but less than 360MPa, the thickness tolerance should be in conformity with the stipulations of Table A7.
Nominal thickness	Thickness tolerance while the widths are showed as follows
	Common precise PT.A			High-level precision PT.B
	≤1200	>1200~1500	>1500	≤1200	>1200~1500	>1500
0.30~0.40	±0.05	±0.06	±0.07	±0.035	±0.040	±0.045
>0.40~0.60	±0.05	±0.06	±0.07	±0.040	±0.045	±0.050
>0.60~0.80	±0.06	±0.07	±0.08	±0.045	±0.050	±0.060
>0.80~1.00	±0.07	±0.08	±0.09	±0.050	±0.060	±0.070
>1.00~1.20	±0.08	±0.09	±0.11	±0.060	±0.070	±0.080
>1.20~1.60	±0.11	±0.13	±0.14	±0.070	±0.080	±0.090
>1.60~2.00	±0.14	±0.15	±0.16	±0.080	±0.090	±0.110
>2.00~2.50	±0.16	±0.17	±0.18	±0.110	±0.120	±0.130
>2.50~3.00	±0.19	±0.20	±0.20	±0.130	±0.140	±0.150
For steel sheet and steel strip with a specified minimum yield strength not less than 360MPa, but less than or equal to 420 MPa, the thickness tolerance should be in conformity with the stipulations of Table A8.
Nominal thickness	Thickness tolerance while the widths are showed as follows
	Common precise PT.A			High-level precision PT.B
	≤1200	>1200~1500	>1500	≤1200	>1200~1500	>1500
0.30~0.40	±0.05	±0.06	±0.07	±0.040	±0.045	±0.050
>0.40~0.60	±0.06	±0.07	±0.08	±0.045	±0.050	±0.060
>0.60~0.80	±0.07	±0.08	±0.09	±0.050	±0.060	±0.070
>0.80~1.00	±0.08	±0.09	±0.11	±0.060	±0.070	±0.080
>1.00~1.20	±0.10	±0.11	±0.12	±0.070	±0.080	±0.090
>1.20~1.60	±0.13	±0.14	±0.16	±0.080	±0.090	±0.110
>1.60~2.00	±0.16	±0.17	±0.19	±0.090	±0.110	±0.120
>2.00~2.50	±0.18	±0.20	±0.21	±0.120	±0.130	±0.140
>2.50~3.00	±0.22	±0.22	±0.23	±0.140	±0.150	±0.160
For steel sheet and steel strip with a specified minimum yield strength not less than 420MPa, but less than or equal to 900 MPa, the thickness tolerance should be in conformity with the stipulations of Table A9.
Nominal thickness	Thickness tolerance while the widths are showed as follows
	Common precise PT.A			High-level precision PT.B
	≤1200	>1200~1500	>1500	≤1200	>1200~1500	>1500
0.30~0.40	±0.06	±0.07	±0.08	±0.045	±0.050	±0.060
>0.40~0.60	±0.06	±0.08	±0.09	±0.050	±0.060	±0.070
>0.60~0.80	±0.07	±0.09	±0.11	±0.060	±0.070	±0.080
>0.80~1.00	±0.09	±0.11	±0.12	±0.070	±0.080	±0.090
>1.00~1.20	±0.11	±0.13	±0.14	±0.080	±0.090	±0.110
>1.20~1.60	±0.15	±0.16	±0.18	±0.090	±0.110	±0.120
>1.60~2.00	±0.18	±0.19	±0.21	±0.110	±0.120	±0.140
>2.00~2.50	±0.21	±0.22	±0.24	±0.140	±0.150	±0.170
>2.50~3.00	±0.24	±0.25	±0.26	±0.170	±0.180	±0.190
Width tolerance
Nominal width	Width tolerance		Width tolerance of the hot-dip zinc, hot-dip alu-zinc coated alloy steel sheets should conform to relevant parameters designed by A12.
	Common precise PW.A	High-level precision PW.B
≤1200	0~+5	0~+2
>1200~1500	0~+6	0~+2