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Galvanized Steel Coil/Sheet(GI)

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.

Thickness:
width:
Zinc Coating:
Surface Structure:
  • CQ,HSLA,DQ,DDQ,BH,DP,TRIP or Customer’s Requirement
  • AIYIA GROUP

Shanghai AIYIA Industrial Co., Ltd. produces high quality galvanized metal and exports a wide range of galvanized steel coils/sheets/plates/strips.The monthly output is large, which can meet the large demand of customers, the price is favorable, and the quality is guaranteed.

What Is Galvanized Steel ?

Galvanized Steel Coil/Sheet(GI)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. The standard electrode potential of zinc is -0.76V. For steel substrates, zinc coating is an anodic coating. It is mainly used to prevent corrosion of steel. Its protective performance has a great relationship with the thickness of the coating. After passivation, dyeing or coating of the photoresist, the zinc coating can significantly improve its protection and decorative properties.

Galvanized Steel Coil/Sheet(GI)

Specifications 

Technical Standard

EN10147/EN10142/DIN 17162/JIS G3302/ASTM A653

Grade

Dx51D/Dx52D/Dx53D/DX54D/S220GD/S250GD/S280GD/S350GD/S350GD/S550GD;
SGCC/SGHC,SGCH,SGH340,SGH400,SGH440,SGH490,SGH540,SGCD1,SGCD2,SGCD3,SGC340,SGC400,SGC440,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),SQ CR40(275),SQ CR50(340),SQ CR80(550);
or Customer’s Requirement

Type

Coil/Sheet/Plate/Strip

Thickness

0.12-6.00mm,or customer's requirement

Width

600mm-1500mm,according to customer's requirement

Type of Coating

Hot Dipped Galvanized Steel(HDG)/Zinc Coated Steel(Electro-Galvanised Steel)

Zinc Coating

20-275g/m2

Surface Treatment

Passivation(C),Oiling(O),Lacquer sealing(L),Phosphating(P),Untreated(U)

Surface Structure

Normal spangle coating(NS),minimized spangle coating(MS),spangle-free(FS)

Quality Approved by SGS
Authentication ISO9001:2008

ID

508mm/610mm

Coil Weight

3-20metric ton per coil

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

Galvanized Steel Surface Structure

normal spangle coating

normal spangle coating


minimized spangle coating

minimized spangle coating


spangle-free coating

spangle-free coating

Production Process 

Galvanized Steel Coil/Sheet(GI) Production Process

Galvanized Category  

1. Cold galvanizing:is also called electro-galvanizing: 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.
2. Mechanical galvanizing: In a rotating drum equipped with plated parts, glass balls, zinc powder, water and accelerator, the glass ball as the impact medium rotates with the drum, causing friction and hammering on the surface of the plated part. The mechanical physical energy, under the action of a chemical accelerator, "cold-welds" the plated zinc powder onto the surface of the plated part to form a smooth, uniform and fine coating having a certain thickness.
3. Hot-dip galvanizing: The main method used for galvanizing the surface of steel sheets is hot-dip galvanizing.

Performance difference between galvalume sheet and galvanized sheet     

1. Resistance to atmospheric corrosion: Galvalume steel sheet is excellent, while galvanized sheet is good.
2. High temperature oxidation resistance:Galvalume steel sheet is excellent, and galvanized sheet is good.
3. Processing performance: Galvalume steel sheet behaves well, and galvanized sheet behaves well.
4. Weldability: Galvalume steel sheet behaves poorly, while galvanized sheet behaves better.
5. Coating property: Galvalume steel sheet behaves better, and galvanized sheet behaves better.
6. Incision protection: Galvalume steel sheet behaves poorly, while galvanized sheet behaves better.
7. Cathodic protection: Galvalume steel sheet is poor, while galvanized sheet is strong.

Main Features 

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.

 Our Base Steel 

Galvanized Steel Coil/Sheet(GI) base steel supplier

 Product Details

Hot Dipped Galvanized Steel Galvanized Steel Coil/Sheet(GI)

 Production Line

     Galvanized Steel Coil/Sheet(GI)

Quality Inspection

GI COIL

Package 

STEEL pakge

STEEL pakge

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.

Product Transportation 

aiyia Product Transportation

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,Color,Production date,Weighing method,Net weight,Gross Weight,Consignee and Protection symbols,etc..

Certificate

AIYIA CertificateAIYIA Certificate

Customer Friends From All Over The World

AIYIA Customer Friends From All Over The World

Guide For Ordering Products

A user need provide the following information while placing order
   01.Product designation (steel plates or strips)
   02.Product standard number
   03.Steel grade
   04.Product specification and size accuracy (incl. thickness, width and length)
   05.Edge status
   06.Surface quality level
   07.Flatness accuracy
   08.Type, coating weight and surface treatment in case of coated products
   09.Surface structure in case of hot dip galvanized products
   10.Weight
   11.Packing method
   12.Application
   13.Other special requirements

Contact Us

contact usTel:0086 (21)63768818   Fax:0086 (21)63768288
Official Email:axie58957@gmail.com
Whatsapp:8618221862128
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LINKIN:https://www.linkedin.com/company/shanghai-aiyia-industrial-co-ltd-
Shanghai Branch office address : 606 Office of Liqin Building, 1885 Metropolitan Road, Minhang District, Shanghai(上海市闵行区都会路1885号丽琴大厦606办公室)aiyia map

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