Galvanized Steel Sheet & Plates, are intended for use where greater corrosion protection is required without painting. A lower cost alternative to stainless steel, galvanized sheet and plates have a rust free protection for up to 30 years, while maintaining strength with a durable surface coating. Our company stocks many sizes in precut sizes, full mill sizes or we can hot dip virtually any size and quantity required for your welding or construction project.
Galvanized steel Sheet coil has a light weight, beautiful and good anti-corrosion performance, can be directly processed. Is mainly used in construction, shipbuilding, automobile manufacturing, machinery manufacturing, furniture home appliance industry, electrical and automation industry. Efficient construction, save energy and protectenvironment, prevent pollution etc.
| SPECIFICATION PARAMETER |
| Commodity |
Galvanized Steel Sheet |
| Grade |
Q195, Q235 |
| SGCC, SGCH, SGC340, SGC400, SGC440, SGC490, SGC570 |
| SGHC, SGH340, SGH400, SGH440, SGH490, SGH540 |
| DX51D, DX52D, DX53D, DX54D |
| S220GD, S250GD, S280GD, S320GD, S350GD, S400GD, S500GD, S550GD |
| Standard: |
AISI, ASTM, BS, DIN, GB, JIS |
| Zinc coated: |
30 g/m²-275 g/m² |
| Spangle |
Zero spangles (0.12-2.0 mm), 0.7-4 mm with small spangles, regular (big) spangles |
| Surface treatment |
Chromated, oiled and anti-fingerprint |
| Thickness |
0.12-4.0mm |
| Width |
600-2000mm |
| Supply Ability |
10000 Tons per Month |
| MOQ |
1 Ton |
| Packaging |
Export standard, seaworthy |
| Substrate |
Cold rolled, Hot rolled |
| ID |
508mm or 610mm |
| Certificates |
SGS, BV, ISO 9001 |
| Trade Term |
FOB, CFR, CIF |
| Payment terms |
T/T, L/C at sight, West Union, D/P, D/A, Paypal |
| Delivery time |
14days after confirmed order |
| Loading port |
Tianjin port |
| Container size |
20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High) |
| 40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High) |
| 40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High) |
| Galvanized Steel Sheet Gauge Chart |
| Gauge |
mm |
Inches |
| 8 |
4.27 |
0.1681 |
| 9 |
3.89 |
0.1532 |
| 10 |
3.51 |
0.1382 |
| 11 |
3.13 |
0.1233 |
| 12 |
2.75 |
0.1084 |
| 14 |
1.99 |
0.0785 |
| 16 |
1.61 |
0.0635 |
| 18 |
1.31 |
0.0516 |
| 20 |
1.01 |
0.0396 |
| 21 |
0.93 |
0.0366 |
| 22 |
0.85 |
0.0336 |
| 23 |
0.78 |
0.0306 |
| 24 |
0.7 |
0.0276 |
| 25 |
0.63 |
0.0247 |
| 26 |
0.55 |
0.0217 |
| 27 |
0.51 |
0.0202 |
| 28 |
0.47 |
0.0187 |
| 30 |
0.4 |
0.0157 |
| Standard |
GB/T 2518 |
EN10346 |
JIS G 3141 |
ASTM A663 |
| Grade |
DX51D+Z |
DX51D+Z |
SGCC |
CS Type C |
| DX52D+Z |
DX52D+Z |
SGCD1 |
CSTypeA.B |
| DX53D+Z |
DX53D+Z |
SGCD2 |
FS Type A, B |
| DX54D+Z |
DX54D+Z |
SGCD3 |
DDS Type C |
| S250GD+Z |
S250GD+Z |
SGC340 |
SS255 |
| S280GD+Z |
S280GD+Z |
SGC400 |
SS275 |
| S320GD+Z |
S320GD+Z |
- |
- |
| S350GD+Z |
S350GD+Z |
SGC440 |
SS340 Class4 |
| S550GD+Z |
S550GD+Z |
SGC590 |
SS550 Class2 |
Chemical composition
| STEEL GRADE |
CHEMICAL COMPOSITION % |
MECHANIC PROPERTY |
C.B OF |
COATING |
| C |
Si |
Mn |
S |
P |
T.S |
Y.S |
E.L |
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 |
- |
We can produce different sizes, thicknesses, widths and materials according to your requirements
Quality Inspection
(1) During and after production, 4 QC personnel with more than 5 years of experience randomly inspect the products.
(2) National accredited laboratory with CNAS certificate.
(3) Accept inspection from a third party designated/paid by the buyer, such as SGS, BV.
(4) Recognized by customers in Malaysia, Indonesia, Singapore, the Philippines, Australia, Peru and the United Kingdom. We have ISO9001/18001, CE certificates.
Diagram of Steel Surface Coating And Layers
Hot-dip Galvanized Steel Sheet
Hot-dip galvanized sheet is made by immersing the steel sheet in a molten zinc bath at about 500 °C to attach a zinc layer to the surface. This is the continuous galvanizing process. It will form a protective zinc layer on the surface so that it has good paint adhesion and weldability. It is the most widely used and cost-effective method to prolong the service life of steel sheets. .
Electro-galvanized Steel Sheet
Electro-galvanizing, also known as cold galvanizing, uses electrolysis to form a uniform and dense layer on the surface of the metal. The anti-corrosion zinc layer can protect steel parts from oxidation corrosion. Also, it can meet decorative purposes. But the zinc layer of the electro-galvanizing steel sheet is only 5-30 g/m2. So its corrosion resistance is not as good as hot-dip galvanized sheets.
Difference Between Hot-Dip and Electro-galvanized Steel Sheets
Anti-corrosion
The zinc coating thickness is one of the most important factors matters corrosion resistance. The greater the zinc layer thickness, the better the corrosion resistance. Generally, the thickness of hot-dip zinc coating is more than 30 g/m2, or even as high as 600 g/m2. While the electro-galvanized zinc layer is only 5~30 g/m2 thick. So the former steel sheet is much more corrosion resistant than the latter one. At Wanzhi Steel, the maximum zinc layer is 275 g/m2 (z275 galvanized steel sheet).
Method of Operation
The hot-dip galvanized steel sheet is galvanized in a molten zinc bath at about 500 degrees, while the electro-galvanized steel sheet is processed at room temperature by electroplating or other methods. That's why electro-galvanizing also refers to the cold galvanizing process.
Surface Smoothness & Adhesion
The surface of the electro-galvanized steel sheet looks smoother than hot-dip galvanized sheets. But its adhesion is not as good as that of the hot-dip galvanized sheet. If you want only one side galvanized, you can choose the electroplating method. However, if adopting hot-dip galvanizing, both sides are coated with a zinc layer fully.
Types of GI Sheets
In terms of the manufacturing process, we divide it into hot-dip galvanized steel sheets and electro-galvanized steel sheets. Hot-dip galvanized sheet is mainly used in construction, home appliances, automobiles, light industry, and other industries. Below are more details for your reference.
Packaging and Transportation
We offer different modes of transport depending on the customer's destination: rail transport and ship transport,etc.The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards,Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, When you first contacted us, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day. Business in progress, we will be online 24 hours for you.
If you are interested in our products, you can contact me at any time and look forward to our cooperation!
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