China Manufacture Galvanized Steel Coil High Quality Zn30 Zn40 Zn150 Z200 Z275g Gi Coils G60 G90

China Manufacture Galvanized Steel Coil High Quality Zn30 Zn40 Zn150 Z200 Z275g Gi Coils G60 G90

Galvanized strip is a long, narrow strip of cold or hot rolled steel coated in varying degrees with a material called (zinc,aluminum). Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between hot-dip galvanized strip steel matrix and molten bath to form a tight zn-fe alloy layer with corrosion resistance. The alloy layer is integrated with the pure zinc layer and the strip matrix. Therefore, its corrosion resistance is strong.

Description

Product Display

product china manufacture galvanized steel coil high quality zn30 zn40 zn150 z200 z275g gi coils g60 g90-6

Standard	AISI,ASTM,GB,JIS	Material	SGCC,S350GD+Z,S550GD+Z,DX51D,DX52D,DX53D
Thickness	0.16-5mm
Tolerance	+/-0.02mm
Coil ID	508-610MM
Technique	Hot rolled, cold rolled
Certification	ISO 9001-2008,SGS,CE,BV
Delivery	7-10 days
Surface treatment:	Oiled, passivation or chromium-free passivation, passivation+oiled, chromium-free passivation+oiled, resistant to fingerprints or chromium-free resistant to fingerprints
Spangle	regular spangle,minimal spangle, zero spangle,big spangle
Payment	30%T/T in advanced+70% balanced;irrevocable L/C at sight
Remarks	Insurance is all risks and accept the third party test
Mechanical properties of galvanized steel
Usage	Grade	Yield strength(MPa)	Tensile strength(MPa)
Punching galvanized steel	DC51D+Z	-	270-500
		DC52D+Z	140-300	270-420
		DC53D+Z	140-260	270-380
Structure galvanized steel	S280GD+Z	≥280	≥360
		S350GD+Z	≥350	≥420
		S550GD+Z	≥550	≥560

Technological production process
The production process of cold rolled strip is generally as follows: pickling → rolling → process lubrication → annealing →leveling → cutting → packaging. Cold rolling process: pickling -- rolling -- annealing -- synchronous lubrication of rolling size -- anti-rust oil -- leveling and sizing -- polishing -- packaging
Heating furnace of hot rolled strip steel: - phosphorus removal machine, roughing mill, phosphorus removal machine, finishing mill, surface quality inspection instrument - layer of cold - reel, baling machine, injection machine - volume base slab.

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Product Advantage

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Long Life-span

With galvanization, a piece of industrial steel is expected to last more than 50 years in average environments, and can last over
20 years with severe water exposure. There is no maintenance required. The increased durability of the steel’s finished product
also increases the product’s reliability.

product china manufacture galvanized steel coil high quality zn30 zn40 zn150 z200 z275g gi coils g60 g90-9

Rust Resistance

From the zinc coating. The iron elements in steel are incredibly prone to rusting, but the addition of zinc acts as a protective
buffer between the steel and any moisture or oxygen. Galvanized steel is very protective, including sharp corners and recesses
that couldn’t be protected with other coatings, making it resistant to damage.

product china manufacture galvanized steel coil high quality zn30 zn40 zn150 z200 z275g gi coils g60 g90-10

Title goes here.

The sacrificial anode ensures that any damaged steel is protected by the surrounding zinc coating. It doesn’t matter if the steel
section is completely exposed; the zinc will still corrode first. The coating will corrode preferentially to the steel, creating a
sacrificial protection to the areas that are damaged.

Chemical Composition

Galvanized Steel 0.18mm-20mm thick galvanized steel sheet 2mm thick Hot dip galvanized steel sizes galvanized sheet metal roll

Chemical Compose	Grade	C %	Si %	Mn %	P %	S %
		≤0.12Q195	Q195	≤0.30	≤0.50	≤0.035	≤0.035
		Q235	≤0.22	≤0.35	≤1.4	≤0.035	≤0.035
		DX51D	≤0.12	≤0.50	≤0.60	≤0.1	≤0.045
		SGCC	≤0.15	-	≤0.80	≤0.05	≤0.03
Mechanical Property	Grade	Yield Strength MPA			Tensile Strength MPA			Elongation
		Q195	≥195			315-430			22%
		Q235	≥235			370-500			19%
		DX51D	-			270-500			22%
		SGCC	≥205			≥270			22%

product china manufacture galvanized steel coil high quality zn30 zn40 zn150 z200 z275g gi coils g60 g90-11

Steel belt is a large output, wide use, variety of steel. According to the processing method, it can be divided into hot rolled strip and cold rolled strip. According to their thickness, they can be divided into thin steel strip (thickness no more than 4mm) and thick steel strip (thickness greater than 4mm); According to the width, it is divided into wide steel belt (width is greater than 600mm) and narrow steel belt (width is less than 600mm); Narrow steel strip is divided into direct rolling narrow steel strip and narrow steel strip by longitudinal shear of wide steel strip; According to the surface state, it can be divided into original rolling surface and plating (coating) surface steel strip. According to the use, it can be divided into general and special (such as hull, bridge, oil drum, welded pipe, packaging, self-generated car, etc.) steel belt.

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Galvanized narrow strip

Spangle is formed during the hot-dip galvanizing process. The size, brightness, and surface of spangles mainly depend on the composition of zinc layer and the cooling method. According to the size, it includes small spangles, regular spangles, big spangles, and free spangles. They look different, but the spangles almost will not influence the quality of galvanized steel. You can choose according to your preference and purpose.

Galvanized narrow strip

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Packing & Delivery

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Our Company

product china manufacture galvanized steel coil high quality zn30 zn40 zn150 z200 z275g gi coils g60 g90-15

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FAQ

Q: How about the MOQ? If my first order qty is small, will you accept?

A: We would like to do our best to support your trial order qty, so even 1 pc or 1 kg is ok to start cooperation; because we have confidence to move on second order with your esteemed company.

Q: What is your payment terms ?

A: Commonly two payment term for new customers: 1) 30% T/T as deposit , 70% balance against B/L copy; 2) 100% Irrevocable L/C at sight;If you need any other terms, pls feel free to contact us too, we will try our best.

Q: How long is your delivery time?

A: Our daily inventory is more than 8000 tons, so for common product size, just need 5 days from stocks; if the special size from new production, delivery 7 days.

Q: How about the samples ? is it free or extra fees?

A: Yes, we would like to supply the samples before order; if the samples from stock, it will be free; if the samples from new production, we will charge some reasonable cost, but this amount will be deducted from your first order invoice.

Q: How to control and guarantee your shipment quality?

A: 1) All our factories are ISO9001, CEcertified facility; 2) Ex factory inspection by our own laboratory.