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Customized High-quality Big Spangle Galvanized Steel Sheet For Building

Very large grains, termed “spangles,” are produced on galvanized sheet steel coatings when lead is added to the zinc bath.
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  • Big Spangle Galvanized Steel Sheet

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Big Spangle Galvanized Steel Sheet



Very large grains, termed “spangles,” are produced on galvanized sheet steel coatings when lead is added to the zinc bath.



The coating fraction by weight is Sn 0.42% ~ 2.16%. Al 0.09%-0.4%; Fe 0.02% ~ 0.08%


Galvanizing method:

The fraction of zinc liquid by weight is Sn 0.42% ~ 2.16%. Al 0.16%-0.2%; Fe 0.02%-0.08%; The allowance is Zn and unavoidable impurities;

Zinc liquid temperature is controlled at 420℃ ~ 480℃, air knife pressure is 260mbar ~ 380mbar, air knife distance is 10mm ~ 20mm;

Strip steel into the zinc pot temperature of 450℃ ~ 500℃; The thickness of the belt plate is 0.3mm ~ 3.0mm, and the speed is controlled from 60 to 160m/min.

On the basis of ensuring that the surface of the coated steel plate has good corrosion resistance, the metal Sn element promotes the growth of zinc flowers on the surface of the zinc layer, making the surface of the coating produce large size zinc flowers, which not only ensures the requirements of environmental protection but also makes the surface have beautiful and bright characteristics, excellent texture, and the tin-coated steel plate fully meets the requirements of environmental protection.

Big Spangle Galvanized Steel Sheet

Product Details

Product Name

Galvanized Steel Sheet

Thickness

0.12-5mm, Customize

Standard

ASTM A 53 / BS 1387/ISO65/EN10219/GB/T 3091-2001

Common Material

201, 304、304L、TP304、TP316L、316、316L316Ti、321、347H、310S, 409,410, 420, 430, 904L, 2205, 2507

Coatings

Top Coats :5 micron primer + 20 micron colour Back Coat: 5 micron primer - 7 micron primer

Spangle

Big Spangle

Zinc coating

40~300g/m2

Material

DX51D,DX52D,DX53D,DC51D,DC52D,DC53D,SGCC,SGCD,SGCE, Q195/Q235/Q345/Q390/Q420/Q460/Q500/S235jr/S235jo

Technique

Hot rolled / Cold rolled

Application

Construction, Ship building, Machinery manufacturing, Steel structure etc

Tolerance

Thickness: ±0.01 mm Width: ±2 mm

Capacity

300000 tons/ year

MOQ

1 ton , We can accept sample order.

Shipment Time

Within 3-5 workdays after receiving deposit or L/C

Payment

1: 30% by T/T as deposit, 70% by T/T before shipping

2: 30% by T/T as deposit, 100% by L/C AT SIGHT ON B/L

3: 100% by  L/C AT SIGHT ON B/L


Galvanized steel surface


Quality Inspection

Why does the surface of hot plated pure zinc coil provided by some suppliers have shining defects?

By means of chemical composition analysis, microstructure observation, glow spectrum measurement, surface roughness measurement and SEM analysis, the defective and normal hot plated pure zinc coils were compared, and the causes of such defects were analyzed. The results show that the main reason for the bright surface of hot plated pure zinc coil is the formation of specular zinc flowers on its surface. This kind of zinc flowers have high reflectance and are brighter than corrugated zinc flowers in vision.

steel products quality inspection firstHot galvanized plate is a kind of steel plate with good corrosion resistance by dipping thin steel plate into the melted zinc groove and making its surface adhere to a layer of zinc. It is widely used in refrigerator, washing machine, air conditioning outer plate and other household appliances with high surface quality requirements. Huien Metal galvanized products are divided into 6 categories: hot plated pure zinc, hot galvanized alloying, hot rolled galvanized, hot plated aluminum zinc, electric galvanized and electroplated zinc nickel, among which hot plated pure zinc has the most rapid development. Zinc flower is an important feature of hot - plated pure zinc plate appearance.

steel sheet plate packaging

quality inspection certificate and bill of ladingAbout Huien Metal

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