Galvanized Steel Coil

2 year ago

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2 year

Product details

Product Description

Galvanized steel coil is a material produced by continuous hot-dip galvanizing process with hot-rolled steel strip or cold-rolled steel strip as the substrate. Hot dip galvanized coil supplied in coil form after coiling. Therefore, galvanized steel sheet (coil) can be divided into hot-rolled galvanized sheet coil and cold-rolled hot-dip galvanized sheet coil. They are mainly used in the fields of construction, household appliances, automobiles, containers, transportation and household industry. Especially in steel structure construction, automobile manufacturing, steel warehouse manufacturing and other industries. Their main characteristics are: strong corrosion resistance, good surface quality, benefit from deep processing, economy and practicality, etc.

Galvanized Steel Coil gets coated in layers of zinc because rust won't attack this protective metal. The most external layer is all zinc, but successive layers are a mixture of zinc and iron, with an interior of pure steel. These multiple layers are responsible for the amazing property of the metal to withstand corrosion-inducing circumstances. Zinc also protects the steel by acting as a "sacrificial layer." If rust does take hold on the surface of Galvanized steel coil, the zinc will get corroded first. This allows the zinc that is spread over the breach or scratch to prevent rust from reaching the steel. For countless outdoor, marine, or industrial applications, Galvanized steel coil is an essential fabrication component.

The requirements of chemical composition of galvanized coil are different in different countries. The national standard is to detect the content of carbon, manganese, phosphorus, sulfur and silicon.

Product Specification

Product	Galvanized Steel Coil
Standard	ASTM, BS, EN, DIN, GB, JIS, ASME, etc.
Grade	Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S450GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC490, SGC570; SQ CR22 (230), SQ CR22 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80(550), CQ, FS, DDS, EDDS, SQ CR33 (230), SQ CR37 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer’s Requirement
Thickness	0.12~3.00 mm (cold rolled), 1.20~4.60 mm (hot-rolled)
Width	600mm-1500mm or 914mm/1000mm/1200mm/1219mm/1220mm
Tolerance	Thickness: ±0.01 mm
Tolerance	Width: ±2 mm
Coil ID	508 mm - 610 mm
Coil weight	3 Tons - 8 Tons or as client requirement
Zinc coating	30g/m² - 600g/m²
Spangle	Regular Spangle, Minimum Spangle, Large Spangle, Zero Spangle
Surface treatment	Oil, Passivation, Chromated, Skin-passed, Anti-finger Print
HS code	72104900.00
Loading Port	Tianjin Port, Qingdao Port, Shanghai Port
Payment Term	L/C or T/T(30% deposit)
Delivery time	Within 15 workdays after deposit received
Package	plastic film + water proof paper + steel plate + packing steel strip
Application	Widely used in road, railway, civil construction, water conservancy construction; all kinds of machinery, electrical appliances, window protection and aquaculture, etc.

Chemical composition

STEEL GRADE	CHEMICAL COMPOSITION %					MECHANIC PROPERTY			C.B OF	COATING
	C	Si	Mn	S	P	T.S	Y.S	E.L	COATING	COATING
	x103	x103	x102	x103	x103	Mpa	Mpa	%	d=0 180°	G/M²
JIS G3302 SGCC	12	30	41	31	21	480	300	13	OK	Z60-150
JIS G3302 SGCH	12	10	21	18	8	680	650	20	OK	Z60-150
ASTM A653 CS.B	29	30	60	35	30	386	250-380	20	OK	Z60-275
DX51D+Z	20	21	18	1.8	11	355	245	38	OK	Z60-275
G550	12	6	73	5	17	715	654	8	OK	Z60-275

Mechanical properties of galvanized steel

Usage	Grade	Yield strength(Mpa)	Tensile strength(Mpa)	Elongation rate %
Punching galvanized steel	DC51D+Z	-	270-500	≥20
	DC52D+Z	140-300	270-420	≥22
	DC53D+Z	140-260	270-380	≥26
	DC54D+Z	140-220	270-350	≥30
Structure galvanized steel	S220GD+Z	≥220	≥300	≥18
	S250GD+Z	≥250	≥330	≥17
	S280GD+Z	≥280	≥360	≥16
	S320GD+Z	≥320	≥390	≥15
	S350GD+Z	≥350	≥420	≥14
	S400GD+Z	≥400	≥470	-
	S500GD+Z	≥500	≥530	-
	S550GD+Z	≥550	≥560	-

Product Display

We can produce different sizes, thicknesses, widths and materials according to your requirements

Advantages

1.Available for customized specification on customers’ request.

2.Perfect Corrosion Resistance. The service life of galvalume is 3-6times as long as that of galvanized surface.

3.Perfect Processing Performance. Fully meet the requirement of roll processing, stamping, bending, ect.

4.Perfect Light Refelectivity. The ability of reflecting light and heat is twice that of galvanizing.

5.Perfect Heat Resistance. Galvalume products can be used at 315 degree Celsius for a long time without discoloration.

6.Excellent adhesion between the paint. Easy to paint and can be painted without pretreatment and weathering.

Galvanized Steel Coil Types

According to the processing method, we divide galvanized steel into the following categories:

1. Hot-dip Galvanized Steel Coil

As the name implies, hot-dip galvanizing is immersing the cleaned iron sheet into the molten zinc bath at about 500 degrees to form a zinc layer. It is the most commonly used method. It has some advantageous features:

1) The entire steel surface is uniformly covered with a zinc layer, even the corners, hollows, etc. so that the steel sheet is fully protected.

2) The cost of hot-dip galvanizing is cheap.

2. Electro-galvanized Steel Coil

Electro-galvanizing is a process of applying a layer of zinc to steel through electroplating, with a saline anode and steel conductor. It is able to enhance the corrosion and heat resistance of steel. Also, it makes steel sheets more good-looking.

Our company

Packaging And Transportation

Pre-sale Service:
1.Good quality + Factory price + Quick response + Reliable service
2.100% responsible for the quality:all the products are produced by our professional workman and we have a high-work-effect foreigh trade team.
3.We have enough stock and can deliver in short time.
4.Customized designs,colors,sizes and logos are welcome,responsiveness to customers' requirements.
After-sale Service:
1.We will count cheapest shipping cost and make invoice to you at once.
2.On time delivery.
3.Provide real pictures of loading container,email you the tracking NO. and help to chase the products until the goods arrive you.
4.24 hours online service,if any question,please contact us at anytime in your convenience.

More questions, please send the email to us!