Gi Sheets Hot Dip Zn Coated G90 Z30 Galvanized Steel Sheet
Galvanized sheet refers to a steel sheet coated with a layer of zinc on the surface. Galvanizing is an economical and effective rust prevention method that is often used, and about half of the world's zinc production is used in this process.
According to the production and processing methods, it can be divided into the following categories:
Hot-dip Galvanized Sheet. Dip the thin steel plate into the molten zinc tank to make the thin steel plate with a layer of zinc adhered to its surface. At present, the continuous galvanizing process is mainly used for production, that is, the coiled steel plate is continuously immersed in a galvanizing tank with molten zinc to make a galvanized steel plate;
Alloyed galvanized steel plate. This kind of steel panel is also made by hot dip method, but it is heated to about 500℃ immediately after coming out of the tank, so that it can form an alloy film of zinc and iron. This galvanized sheet has good paint adhesion and weldability;
Electro-galvanized steel plate. The galvanized steel panel manufactured by electroplating has good processability. However, the coating is thinner and its corrosion resistance is not as good as that of hot-dip galvanized sheets
Characteristics: Galvanized steel is very well resistant to rust with a reasonable degree of paintability, formability and spot weldability.
Uses and Problems: They are commonly employed in household appliance components like thermostats, where the part must be attractive. But galvanized steel sheets are overpriced comparing with SECC, so there is a trend that some manufacturers change over to SECC to reduce cost.
Selection of Quality: Zinc coating can be assessed by the diameter of spangle and thickness of zinc layer - the smaller spangle size and the thicker zinc coating, the better the quality. Anti-fingerprint treatments may also be applied by manufacturers. Coating thickness grades, e.g. Z12 are related to the zinc mass/density coating on both sides, with a Z12 coating meaning a total coating of 120 g/m2.
Galvanized Steel Sheet which have good corrosion resistance and long service life, can be used in many applications. In building products including roofing, wall panels and structural components. In the automotive industry, they are used as body panels, chassis components, and brackets. They also are widely used in household appliances like refrigerators, washing machines, and air conditioners, where look and strength are both required. In addition, galvanized steel plates have been applied extensively in machinery manufacturing, pipelines, storage tanks, electrical cases and HVAC, and more industries, bringing you with economical and long-lasting anti-corrosion solutions for different applications.
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Technical Standard
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EN10147, EN10142, DIN 17162, JIS G3302, ASTM A653
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Steel Grade |
Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440,
SGH490,SGH540, SGCD1, SGCD2, SGCD3, SGC340, 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), SQCR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer’s Requirement |
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Thickness
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customer's requirement
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Width
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according to customer's requirement
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Type of Coating
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Hot Dipped Galvanized Steel(HDGI)
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Zinc Coating
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30-275g/m2
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Surface Treatment
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Passivation(C), Oiling(O), Lacquer sealing(L), Phosphating(P), Untreated(U)
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Surface Structure
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Normal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS)
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Quality
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Approved by SGS,ISO
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ID
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508mm/610mm
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Coil Weight
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3-20 metric ton per coil
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Package |
Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by
seven steel belt.or according to customer's requirement |
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Export market
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Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc
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| Gauge Thickness Comparison Table | ||||
| Gauge | Mild | Aluminum | Galvanized | Stainless |
| Gauge 3 | 6.08mm | 5.83mm | 6.35mm | |
| Gauge 4 | 5.7mm | 5.19mm | 5.95mm | |
| Gauge 5 | 5.32mm | 4.62mm | 5.55mm | |
| Gauge 6 | 4.94mm | 4.11mm | 5.16mm | |
| Gauge 7 | 4.56mm | 3.67mm | 4.76mm | |
| Gauge 8 | 4.18mm | 3.26mm | 4.27mm | 4.19mm |
| Gauge 9 | 3.8mm | 2.91mm | 3.89mm | 3.97mm |
| Gauge 10 | 3.42mm | 2.59mm | 3.51mm | 3.57mm |
| Gauge 11 | 3.04mm | 2.3mm | 3.13mm | 3.18mm |
| Gauge 12 | 2.66mm | 2.05mm | 2.75mm | 2.78mm |
| Gauge 13 | 2.28mm | 1.83mm | 2.37mm | 2.38mm |
| Gauge 14 | 1.9mm | 1.63mm | 1.99mm | 1.98mm |
| Gauge 15 | 1.71mm | 1.45mm | 1.8mm | 1.78mm |
| Gauge 16 | 1.52mm | 1.29mm | 1.61mm | 1.59mm |
| Gauge 17 | 1.36mm | 1.15mm | 1.46mm | 1.43mm |
| Gauge 18 | 1.21mm | 1.02mm | 1.31mm | 1.27mm |
| Gauge 19 | 1.06mm | 0.91mm | 1.16mm | 1.11mm |
| Gauge 20 | 0.91mm | 0.81mm | 1.00mm | 0.95mm |
| Gauge 21 | 0.83mm | 0.72mm | 0.93mm | 0.87mm |
| Gauge 22 | 0.76mm | 0.64mm | 085mm | 0.79mm |
| Gauge 23 | 0.68mm | 0.57mm | 0.78mm | 1.48mm |
| Gauge 24 | 0.6mm | 0.51mm | 0.70mm | 0.64mm |
| Gauge 25 | 0.53mm | 0.45mm | 0.63mm | 0.56mm |
| Gauge 26 | 0.46mm | 0.4mm | 0.69mm | 0.47mm |
| Gauge 27 | 0.41mm | 0.36mm | 0.51mm | 0.44mm |
| Gauge 28 | 0.38mm | 0.32mm | 0.47mm | 0.40mm |
| Gauge 29 | 0.34mm | 0.29mm | 0.44mm | 0.36mm |
| Gauge 30 | 0.30mm | 0.25mm | 0.40mm | 0.32mm |
| Gauge 31 | 0.26mm | 0.23mm | 0.36mm | 0.28mm |
| Gauge 32 | 0.24mm | 0.20mm | 0.34mm | 0.26mm |
| Gauge 33 | 0.22mm | 0.18mm | 0.24mm | |
| Gauge 34 | 0.20mm | 0.16mm | 0.22mm | |
1. What are your prices?
Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact
us for further information.
2. Do you have a minimum order quantity?
Yes, we require all international orders to have an ongoing minimum order quantity. If you are looking to resell but in much smaller quantities, we recommend you check out our website
3. Can you supply the relevant documentation?
Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required.
4. What is the average lead time?
For samples, the lead time is about 7 days. For mass production, the lead time is 5-20 days after receiving the deposit payment. The lead times become effective when
(1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate your needs. In most cases we are able to do so.
5. What kinds of payment methods do you accept?
30% in advance by T/T, 70% will be before shippment basic on FOB; 30% in advance by T/T, 70% against the copy of BL basic on CIF.
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