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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 SteelThe 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

Product Composition Surface Structure 

Galvanized Steel spangle-free coating

Galvanized Steel minimized spangle coating

Galvanized Steel normal spangle coating

spangle-free coating

minimized spangle coating
normal spangle coating

Specifications 

Technical Standard ASTM DIN GB JIS3302
Grade CQ,HSLA,DQ,DDQ,BH,DP,TRIP or Customer’s Requirement
Type coil,sheet,plate,strip
Thickness 0.13mm-4.0mm
Width 600mm-1500mm
Type of Coating Hot Dipped Galvanized
Zinc Coating 30-275g/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)

ID 508mm/610mm
Coil Weight 3-20metric ton per coil
Package Standard export package or customized
Hardness  HRB50-71 ( CQ Grade )
HRB45-55 ( DQ Grade )
Yield Strength 140-300 (DQ Grade)
Tensile Strength  270-500 (CQ Grade)
270-420 (DQ Grade)
Elongation Percentage  22 (CQ Grade thickness less 0.7mm)
24 (DQ Grade thickness less 0.7mm)

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.

Production Process 

Hot-dip galvanizing Production Process

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.

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.

Product Display 

galvanized steel coil 

Production Line 

galvanized steel coil
        

Package 

Galvanized Steel COIL PACKAGE

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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