Machinery ,Steel Material ,Engineer spare parts
English
by Transposh - translation plugin for wordpress

Hot dip galvanization steel coil

20170302101155

Hot dip galvanization steel coil

 1) Introduction of hot dip galvanization steel

Hot-dip galvanization is a form of galvanization. It is the process of coating iron, steel or aluminium with a layer ofzinc by immersing the metal in a bath of molten zinc at a temperature of around 840 °F (449 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements. Galvanized / galvalume  steel is widely used in applications wherecorrosion resistance is needed without the cost of stainless steel, and can be identified by the crystallization patterning on the surface (often called a “spangle”).

Galvanized steel can be welded; however, one must exercise caution around the resulting toxic zinc fumes. Galvanized steel is suitable for high-temperature applications of up to 392 °F (200 °C). The use of galvanized steel at temperatures above this will result in peeling of the zinc at the inter metallic layer. Electrogalvanized sheet steel is often used in automotive manufacturing to enhance the corrosion performance of exterior body panels; this is, however, a completely different process which tends to achieve lower coating thicknesses of zinc.

Like all other corrosion protection systems, galvanizing protects steel by acting as a barrier between steel and the atmosphere. However zinc is a more electronegative metal in comparison to steel, this is a unique characteristic for galvanizing which means that when a galvanized coating is damaged and steel is exposed to the atmosphere, zinc can continue to protect steel through galvanic corrosion(often within an annulus of 5 mm above which electron transfer rate decreases).

2) Specifications

20170301160614

 

 

 

 

 

 

 

 

3) Technical Data

-GI Coil/ Price Hot Dipped Galvanized Steel Coil/ zinc corrugated roofing sheet / Iron Sheet price

-GL coil/ASTM A792M Galvalume Steel Coil / Aluzinc iron coil / competitive price galvalume steel sheet in coil

20170301161219

 

 

 

 

 

 

 

 

 

20170228144842 20170228142618 20170228142520

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20170228144940

 

 

 

 

 

 

 

 

 

20170302101054

 

 

 

 

 

 

 

 

 

4)Package

20170228142603 20170302101155

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20170228144738

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Have any question, Please enter the form below and click the submit button.

*
*
0 + 4 = ?
Please enter the answer to the sum & Click Submit to verify your registration.
CATEGORY AND TAGS:

Industrial Steel, Steel Coil

Related Items

  • Product Categories

  • Contact Us


    Questions?
    Deyang Sunrise International Co.,Ltd
    +86.13228613228

    manager@dysunrise.com
    Skype:yunchuan.xiao

    24 hours every day
    7 days every week