ASTM Dx51d, Dx52D, Dx53D, Dx54D Galvanized/Galvanised Steel Sheet/Plate Zinc Iron Roofing Sheet Gauge 4X8 Metal Roof Sheet

• Customization: Available
• Type: Steel Plate
• Standard: ASTM, AISI, GB, JIS, DIN
• Model NO.: DX51D, DX52D, DX53D, DX54D
• Surface Treatment: Galvanized
• Technique: Cold Rolled, Hot Rolled
• Application: Mold & Dies, Ship Plate, Boiler Plate, Container Plate, Flange Plate
• Stock: Stock
• Material: SGCC,Sgch,G550,Dx51d,Dx52D,Dx53D,S280gd,S350gd
• Length: 1-12m,or as Required
• Width: 1000-5000mm,Such as 1220mm 1250mm 1500mm
• Thickness: 0.13-6.0mm
• Spangle: Regular Spangle,Zero Spangle, Big Spangle
• Zinc Coating: 20g-275G/M2
• Surface: Chromated, Oiled and Anti-Fingerprint
• Trade Term: EXW Fob CFR CIF
• MOQ: 1ton
• Payment Term: Tt/LC
• Hot Sale Country: Middle East, Southeast Asia, Europe,South America
• Sample: Free Provide
• Key Word: Galvanized Steel Sheet
• Transport Package: Standard Export Package
• Origin: China
• HS Code: 7220900000
• Production Capacity: 200000tons Per Year

Product Description

Galvanized sheet is a steel plate coated with zinc. Galvanizing is an economical and effective method to prevent rust, and about half of the world's zinc production is used in this process. Galvanized steel plate is to prevent corrosion on the surface of the steel plate to prolong its service life, coated with a layer of metal zinc on the surface of the steel plate, the zinc coated steel plate is called galvanized plate. 

Galvanized steel plate can be divided into general use, roof use, building outer plate use, structure use, wall board use, tensile and deep punching galvanized steel plate.

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.

GI Sheet Specification:

Material 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	GB,JIS,ASTM,BS,DIN,ISO...
Thickness	0.13-4.0mm
Zinc Coating	20g-275g/m2
Width	500-1500mm (usual size:914mm,1000mm,1200mm,1219mm,1250mm,1220mm)
Length	1-12m,or as Required ,As customers' request
Surface	Chromated, oiled and anti-fingerprint
Spangle	Regular spangle,minimal spangle ,zero spangle, big spangle
Application	widely used from the general engineering structure to cars, bridges, ships, boilers, pressure vessels and other manufacturing
Trade Terms	EXW,FOB,CIF CFR
Loading Port	Shanghai port, Tianjin port, Qindao port
Payment terms	1) 30% deposit by T/T, the balance against copy of B/L by T/T.
	2) 30% deposit by T/T, the balance by L/C at sight.
	3) 100% L/C at sight.
MOQ	1Ton
Packing Detail	Standard export package:Wooden pallet +paperboard +steel strip Customized requirements are accepted
Delivery time	1.Usually,within10-20days after receiving deposit or LC. 2.According to the order quantity
Samples	Free samples are provided but the fright is borne by the buyer

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

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. 
 

Method of Operation Between Hot-Dip and Electro-galvanized Steel Sheets
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 Between Hot-Dip and Electro-galvanized Steel Sheets
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.

Galvanized steel sheet products are mainly used in construction, light industry, automobile, agriculture, animal husbandry,
fishery and other industries. Such as building roofs, highway guardrails, sheet metal processing, roof grilles, household
appliance enclosures, ventilation ducts, chimneys, kitchen utensils, grain storage and transportation, frozen processing of meat and aquatic products



Wuxi Jianbanghaoda Steel Co., Ltd. is a sophisticated manufacturer of steel products. It's located in Wuxi, which is the biggest production base and distribution center of steel products in China , it's also near to Shanghai. We have many faithful clients in Europe, South America, Mid-East, Asia and etc. We have a wide range of steel products, such as stainless steel, carbon steel, alloy steel and etc. The annual export volume is about 1000,000 tons. We promised almost all inquiry will be dealed with within 3 hours.  "Punctuality, Integrity, Humanization service" has always been the development principle that strictly adhered by our company and all stuff all the time.
At present, we have five finishing rolling production lines and two hot rolling production lines .  Further more advanced automatic width control system (AWC), automatic thickness control system (AGC), bending roll system, work roll channeling roll system and other effective measures are adopted to guarantee product quality. Well-equipped production lines and advanced control systems work together to make sure all the stainless steel products we made are in line with the national standards.


OUR SERVICE:
1.Provide free sample. 
2.We have full stock and can deliver within short time.
3.OEM and ODM order are accepted, Any kind of logo printing or design are available.
4.We offer you the different types of product.
5.Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you.
6.All of our products are produced by our professional workman and we have our high-work-effect foreign trade team, you can
totally believe our service. 
After you choose:
1. We will count cheapest shipping cost and send it to your email.
2. Start production immediately after receiving the advance payment.
3.About 10-15 working days to complete the production, and then the customer side to pay the balance.