Galvanize Galvanized Steel Sheet Steel Strip Metal In Coils Qb235 Galvanized Steel Sheet
Product Description of Galvanized Steel Sheet:
What Is Galvanized Steel?
The galvanized coil is a thin steel plate in which a thin steel plate is immersed in a molten zinc bath to adhere a layer of zinc to the surface.Galvanized steel is a surface treatment technique that coats a layer of zinc on the surface of a metal, alloy or other material for aesthetics, rust prevention, and the like. The main method used is hot-dip galvanizing. Zinc is easily soluble in acid and soluble in alkali, so it is called an amphoteric metal. Zinc hardly changes in dry air. In moist air, a dense zinc carbonate film is formed on the zinc surface. In the atmosphere containing sulfur dioxide, hydrogen sulfide and marine, the corrosion resistance of zinc is poor, especially in the atmosphere containing high temperature and high humidity containing organic acid, the zinc coating is easily corroded.
1) Corrosion resistance:When zinc is abraded, aluminum forms a dense layer of alumina that prevents further corrosion of the corrosive material inside.
2) Heat resistance:Aluminum zinc alloy steel has good heat resistance and can withstand high temperatures of more than 300 degrees Celsius.
3) Thermal reflexes:The heat reflectivity of Al Zn steel plate is very high, which is two times that of galvanized steel sheet.
4) economical efficiency:Since the density of 55% AL-Zn is smaller than the density of Zn, the aluminum-zinc-plated steel sheet is more than 3% larger than the area of the plated steel sheet when the weight is the same and the thickness of the gold-plated layer is the same.
Specification of Galvanized steel sheet:
||ASTM DIN GB JIS3302
||SGCC SGCD or Customer’s Requirement
|Type of Coating
||Hot Dipped Galvanized
||Zero Spangle / Mini Spangle / Regular Spangle / Big Spangle
||3-10metric ton per coil
||Standard export package or customized
||HRB50-71 ( CQ Grade )
|HRB45-55 ( DQ Grade )
||140-300 (DQ Grade)
||270-500 (CQ Grade)
|270-420 (DQ Grade)
||22 (CQ Grade thickness less 0.7mm)
|24 (DQ Grade thickness less 0.7mm)
Hot dip galvanizing (HDG):it is one of the common galvanizing methods. The process is to completely dip iron or steel into molten zinc.
Electro-galvanizing(EG):it is to remove the oil, pickle, and then put into the solution of zinc salt by electrolysis equipment, and connect the negative electrode of the electrolysis equipment, place the zinc plate on the opposite side of the pipe fitting, and connect When the positive electrode of the electrolysis device is turned on, a layer of zinc is deposited on the pipe by the directional movement of the current from the positive electrode to the negative electrode, and the cold-plated pipe member is processed and then galvanized.
Advantage & Application of Galvanized Steel Sheet:
Corrosion Resistance: the zinc coating surface protects the base steel not only by providing barrier to corrosion elements,
but also by the sacrificial nature of the coating. Galvanized steel often remains in working order with little maintenance for
40 years or more.
The production process of hot-dip galvanized sheet:preparation of original board → pre-plating treatment → hot dip plating → post-plating treatment → finished product inspection. According to the habits, the hot-dip galvanizing process is divided into two categories: off-line annealing and in-line annealing.
What are advantages of galvanized steel?
Because of permanently and successive zinc/iron alloy layers, galvanized steel offers many benefits than traditional steels.
1.Anticorrosive:13 years in heavy industrial areas,50 years in the ocean,104 years in the suburbs and 30 years in cities.
2.Cheap:The cost of hot-dip galvanizing is lower than that of other coatings.
3.Reliable:The zinc coating is metallurgically bonded to the steel and forms part of the steel surface,so the coating is more durable.
4.Strong toughness:The galvanized layer forms a special metallurgical structure that can withstand mechanical damage during transportation and use.
5.Comprehensive protection:Every part of the plated piece can be galvanized,and is fully protected even in depressions,sharp corners,and hidden places.
6.Save time and energy:Galvanizing process is faster than other coating methods.
The steel strips supplied according to the standard are usually applied with common rustproof oil film, which can be swept away with alkali solution. The supplier guarantees that the oiled products will be free from rust under normal packing, transportation, loading and storage conditions within 6 Months, the approved delivery date. However, product without oil coating can also be subject subject to statement in the contract reached after discussion between the user and the supplier.
We offer different modes of transport depending on the customer's destination: rail transport and ship transport.The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards, Specifications, Package No., Contract No., Heat No., Weight of zinc film, Color, Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
Galvanized Steel Coil Galvanized Steel Sheet SGCC,DX51D and Q195,Both Sides Coating Military Grade Steel Plate
Q: What is your advantage?
A:OEM customized fabrication service
Three steel manumacturers in both TangShan and TianJin city.
Complete sizes,grade and MOQ
Full of inventory with large warehose
24 hours online service, feedback within one hour.
Q:Do you supply Cold Rolled Steel Coils and Sheets in stock?
A:Yes we supply cold rolled steel coils and sheets, also as your according.
Q:What about the delivery time?
A: 15~35days after receiving T/T prepayment or LC date.
Q:Do you provide? Is it free?
A:When you confirmed the price, you can require for samples to check our quality counter display. If you need the samples, we will charge for the sample cost .But the sample cost can be refundable after order confirmation when your quantity of the order is more about the MOQ.