Dx51d Z275 Galvanized/Galvanised Steel Sheet/Plate Zinc Iron Roofing Sheet Dx53D Z150 24 Gauge 4X8 Metal Roof Sheet

Basic Info.

Model NO.	Galvanized steel sheet/plate
Technique	Hot Rolled /Cold Rolled
Application	Mold & Dies, Ship Plate, Boiler Plate, Container Plate, Flange Plate
Special Use	Cutting Tools, Measuring Tools, Cutters in Common Steel, High-strength Steel Plate, Wear Resistant Steel
Stock	Stock
Grade	SGCC Dx51d+Z, SGCC/Sgch/SPCC/Spcd/Spce
Surface	Cheomated/Non-Chromated,Non Oiled/Oiled,Anti Finge
Width	30mm-2050mm,as Required
Temper	Full Hard, Half Hard, Sort
Length	1000-8000mm.as Required
Tolerance	1%
Spangle	Regular Spangle, Minimal Spangle, Zero Spangle
Zinc Coating Weight	30G/M2-600G/M2,Double Side
Delivery Time	7-14 Days
Transport Package	in Bulk, in Bunddle, in Water Proof Plastic Wrrapp
Specification	As required
Trademark	DELONG
Origin	Shandong
HS Code	7208519000
Production Capacity	7000 Tons/Month

Product Description

GI Sheet Material Types
The commonly used galvanized steel grades are:
Commercial Sheet (CQ);
Forming Steel;
GI Sheet for Structural Use (HSLA);
Deep Drawing Steel Sheet (DDQ);
Extra Deep Drawing Steel (EDDS), etc.
How to Calculate GI Sheet Weight?
The GI sheet weight follows the calculation formula: W= Thickness (mm) * Width (m) * Length (m) * 7.85 (Density of steel = 7.85 kg/m3) + zinc layer weight
Taking gauge 18 GI sheets (G90) for example, the thickness is about 1.31 mm. The zinc layer is about 275 g/m2. So the galvanized sheet weight per square meter is about 10.58 kg. You can roughly get the weight. If your galvanized sheet is 0.7 mm in thickness, 1.2 m in width, and 2.5 m in length, the weight is about 16.5 kg/piece (0.7*1.2*2.5). If you order 50 tons, there will be about 3,000 pieces. You can estimate how many GI sheets are needed for your project easily.

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	40000MT/month
MOQ	5MT
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

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.