Galvanized Steel Coils is also called hot-dip galvanized steel coils as it is produced by immersing steel in a zinc bath, which requires a pretreatment process when steel passing through different baths for preparing the surface zinc coating. First, use chemicals to clean surface of the steel then another chemical treatment for the steel coils passing through a bath of melted zinc at temperatures around 460 degree. When finished the products shows smooth and shiny appearance. To store for a longer period, the hot-dip galvanized coils can be delivered with a final oil coating, according to the customer demand. If processed by further cold forming and bending processes, it will has much better ability.

Where to use:

Galvanized steel coils are widely used in the construction industry, as raw material for the production of corrugated panels, fencing products, drywall panel profiles, ventilation systems etc. Recommend for both outside and inside usage, galvanized steel has a high resistance to corrosion in different environments, due to a protective layer of zinc of 100 180 grams per square metre.

Main specification of Galvanized Steel Coils:

Hot dipped galvanized coil Technical Data

Chemical Composition
SGCC/DX51D+Z 0.10 0.50 0.60 0.10 0.030 0.020
DX52D+Z 0.10 0.50 0.60 0.10 0.030 0.020
SGCD/DX53D+Z 0.10 0.30 0.50 0.05 0.030 0.020
SGCE/DX54D+Z 0.10 0.30 0.30 0.03 0.020 0.020
DX56D+Z 0.10 0.30 0.30 0.03 0.020 0.020
Structural 0.20 0.60 1.70 0.10 0.045


hot dipped galvanized steel coil Mechanical Properties
GRADE Yield Strength MPa Tensile Strength MPa Elongation %
SGCC(DX51D+Z) 205 270
SGCD(DX53D+Z) 270 38
SGCE(DX54D+Z) 270 40
DX56D+Z 270 42


Further detail information:

Commodity Galvanized Steel Coils
Techinical Standard: JIS 3302 / ASTM A653 / EN10143
Grade DX51D / DX52D/ DX53D/ S250,280,320GD
Width Adjustable according to customer need
Thickness 0.12-2.5mm (0.14-0.5mm is the most advantage thickness)
Type of coating: galvanized
Zinc coating Z60-275g/m2
ID coil 508mm or 610mm


Galvanized Steel Coils

How to protect Galvanized Steel Coils?

  • Oiling–Putting oil on machine can reduce the corrosion of steel plate under wet storage conditions and then it is much more easier to store.  But when oiling, please make sure not damage the degreasing agent zinc layer.
  • Sealing–Put transparent organic thin layer coating on the surface of product can provide add additional protection against corrosion, especially fingerprint resistant. And when forming, this method can improve lubricity and then use the layer as bottom adhesion.
  1. Phosphating– phosphating treatment is fit for various galvanized steel, in addition to the normal cleaning, no further treatment needed for phosphating. Resistance and anticorrosion coating adhesion can improve this process, reducing corrosion of the danger when storage and transportation. After phosphating you can add some suitable lubricant, this method can improve the forming performance of galvanized steel coils.

Note: we will not take any protection methods stated above without getting customer permission.

Packaging & Delivery

Packaging Detail:Standard seaworthy export package

Delivery Detail:According to the quantity or as per customer’s request .


ZHONGTUO is located in north of China, the biggest and strongest manufacturing base for cold rolling forming machine and materials. We have various kinds of machinery and production methods to meet customers increasing demand. Our factory has been built since 1996, so we have experience and ability to handle various needs even if it is hard to finish. Our products have been used and widely praised by our customers from more than 30 counties like Canada, South Korea, Russia, Holland, Surinam, Srilanka, Vietnam, Armenia, Bolivia and so on so forth.


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