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Galvanized Steel Coil

Galvanized Steel Coil

 

 

Galvanized steel coil is defined as a carbon steel coil that is coated with zinc on both sides. The galvanized steel coils supplier produces galvanized steel through two main processes: continuous hot-dip galvanizing and electro-galvanizing.


The hot dip process involves passing the steel through a molten zinc bath, while the electro-galvanizing process involves applying zinc through electrolytic treatment. As a result, the zinc layer adheres firmly to the base metal through an iron-zinc bonding layer. Our hot-dip galvanized steel coils are manufactured to specification, and our electro-galvanized products also meet specifications.

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Company Advantages
1

Professional team

A 200-person professional service team, with strong company strength.

2

Many years of experience

With many years of industry export experience, with complete product specifications and types.

3

Satisfaction first

24-hour rapid response, transparent and reasonable prices.

4

Perfect after-sales service

Comprehensive and considerate service, with thoughtful after-sales support.

 

Galvanized Steel Coil

 

 

Hot dipped galvanized steel coil is a type of steel product that has been coated with a layer of zinc to protect it from corrosion. The process involves immersing the steel coil into a bath of molten zinc, which forms a metallurgical bond between the zinc and the steel. This coating provides a durable and long-lasting barrier against rust and other forms of corrosion, making it ideal for use in various applications such as construction, and manufacturing industries.

 

Galvanized

 

 

Technical Standard

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

Steel Grade

Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC340 , 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), SQCR40 (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(HDGI)

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)

Quality

Approved by SGS,ISO

ID

508mm/610mm

Coil Weight

3-20 metric 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

Export market

Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc
 

 

Standard

 

 

Content

    

Material:

SG550/SG280/SG350DX51D+Z

SGCC/ CS TYPE

Finish

NBMinimized Spangle (M)

  

Surface Treatment

Chemically Passivated (C)

  

Oil

Not Oiled

  

Zinc

Z30--275

  

Thickness tolerances

Normal thickness tolerances

0.40 < thickness ≤ 0.60

± 0.060

0.60 < thickness ≤ 0.80

± 0.070

0.80 < thickness ≤ 1.00

± 0.080

1.00 < thickness ≤ 1.20

  
   

Width tolerances

  

1200 < width ≤ 1500

6 ~ 0

 

Chemical composition

 

 

Designation

  

Chemical composition % by mass max.

Steel grade

  

C

Si

  

Mn

P

S

TI

Steel name

  

Symbols for the types of available coatings

DX51D

+Z

0.18

0.5

  

1.2

0.12

0.045

0.3

 

Packing Details

 
  • 4 eye steel bands and 4 circumferential steel bands.
  • Galvanized steel fluted rings on inner and outer edges.
  • Galvanized steel sheet and waterproof paper wall protection.
  • Galvanized steel and waterproof paper around circumference and bore protection.

 

Surface treatment of Galvanized Steel Coil

 

Material DX51D,SGCC,G300,G550,SGCH570 Surface Treatment Passivation Or Chromated, Skin Pass,Oil Or Unoiled,or Antifinger Print Spangle Types Free Spangle(No Spangle),Minimal Spangle,Regular Spangle Zinc Coating Z40~Z275 Coil Weight 3~10Tons Inner Diameter 508mm / 610mm Tensile Strength 200-550 N/mm2 Elongation 16~30%

 

01

Passivation

The galvanized layer is passivated to reduce folding corrosion (white rust) under tidal temperature storage and transportation conditions. However, the anti-corrosion performance of this chemical treatment is limited and, moreover, hinders the adhesion of most paints. This kind of treatment is generally not used in the zinc-iron alloy coating. Except for the smooth surface, as a routine, the manufacturer conducts passivation treatment on other types of zinc coating.

Coil Painted Oiled Structural ASTM SPCC SPCD S PCE DC01 DC03 Cold Rolling Carbon Steel Mild Hard/soft Black Custom Mid Hard /

 

02

Oiled

Oiling can reduce steel plate corrosion under wet storage and transportation conditions, and re-oiling steel plates and steel strips after passivation treatment will further reduce corrosion under wet storage conditions. The oil layer should be able to be removed with a degreasing agent that does not damage the zinc layer.

Corten Steel Pickled And Oiled Cold Rolled Steel Coil

 

03

Paint seal

An additional corrosion protection, especially anti-fingerprint properties, can be provided by applying a very thin film of transparent organic coating. Improves lubricity when forming and acts as an adhesion primer for subsequent coats.

Soft Black Painted Oiled Structural ASTM Coil

 

04

Phosphating

Through phosphating treatment, galvanized steel sheets of various coating types can be coated without further treatment except for normal cleaning. This treatment can improve the adhesion and anti-corrosion performance of the coating, and reduce the risk of corrosion during storage and transportation. After phosphating, it can be used with a suitable lubricant to improve the forming performance.

 

Certificates

 

productcate-1-1

 

FAQ

 

Q: What is the production capacity of your factory?

A: The factory has an annual production capacity of 500000 tons, fully meeting the production demand.

Q: When will the shipment be made?

A: All of our products are in stock and will be shipped within 15-21 days.

Q: What transportation method do you usually use?

A: For the export of steel, we usually use sea freight because sea freight has lower costs and is suitable for the transportation of large quantities of goods.
For some urgent orders or small batch goods, we can also consider other transportation methods such as air or land transportation.

Q: What are the packaging methods for steel?

A: Our steel is usually packaged in bundles. For some steel with special requirements, such as stainless steel plates, we also use moisture-proof and
rust proof packaging materials, such as plastic film, rust proof paper, etc., to prevent the steel from being damaged and corroded during transportation and storage.

Q: What payment methods do you accept?

A: We usually accept payment methods such as wire transfer (T/T), letter of credit (L/C), and collection (D/P, D/A).Of course, we can also negotiate more flexible payment methods based on specific circumstances.

Q: Can you provide technical support for the use and processing of steel?

A: We have a professional technical team that can provide you with technical support for the use and processing of steel, including technical guidance on cutting, welding, bending, and other aspects of steel to help you better use our products.

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional galvanized steel coil manufacturers and suppliers in China, specialized in providing high quality products with low price. We warmly welcome you to wholesale cheap galvanized steel coil in stock here and get free sample from our factory. Also, customized service is available.

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