Galvanized Steel Coil

Galvanized Steel Coil is used cold rolled steel coil as substrates by a continuous hot-dip process. This method tightly adheres the coating to the steel with an iron-zinc alloy bonding layer formed by a diffusion process while the heated steel strip is in contact with the molten zinc. One of the drawbacks of Galvanized is that if the Zinc coating is scratched off the steel, the Steel is left unprotected, and is subject to failure. It has excellent corrosion resistance, paintability, and workability due to zinc's characteristics.

Terms of price: EXW, FOB, CFR, CIF

Product customization available

Order your Galvanized Steel Coil from Us

  • Available Standards— ASTM, AISI, JIS, ISO, EN, BS, GB,
  • Surface— Passivation(C), Oiling(O), Lacquer sealing(L), Phosphating(P), Untreated(U)
  • Spangle— Normal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS)
  • Surface structure— Zero or nomal spangle
  • Width— 20-2800mm
  • Tolerance — ±10%

Get Your Metal Cut-to-Size!

We’ll cut your order to your exact specifications. No need to buy full lengths! Contact us

Top 6 Services

Technical Service
Committed to solving your steel problems, calculating steel, and providing a free quote
Custom Metal Services
We can be customized according to customer technical requirements. and provide a variety of surface treatments
Purchase Process Service
Pre-sale, in-sale, and after-sale full-service, allowing you to have a pleasant purchase journey
Quality Control
We have a strict quality inspection system, all the steel products are with the original mill material report, and the third-party quality tests are also acceptable.
Packaging & Delivery Service
Various packaging options are available; professional loading teams, and shipping companies ensure that the goods arrive safely and quickly.
Factory Inspection Service
Welcome to visit the factory, we also provide 3D factory inspection service. Email us for your next China journey.

Steel Coil Production

A steel coil is a finished steel sheet or strip that has been coiled or wound after rolling with the width of the metal sheet being greater than its thickness. Steel coil with certain coatings can be weather-resistant, protect against moisture, and is eco-friendly. The steel coil is produced through different processes depending on the desired outcome.

  • Hot-rolled steel coil is the steel plate that is rolled at a high temperature, making the steel easier to manipulate. Due to the quick and easy process, hot-rolled steel saves time and is less expensive to manufacture.
  • Cold-rolled steel coil has a nicer finish and is more durable than hot-rolled steel. Cold-rolling is a process where the steel is rolled at room temperature, below its recrystallization temperature. While cold-rolled steel coil is superior to other coils, cold-rolled steel can be harder to manipulate due to the higher carbon content.
  • Galvanized steel coil is created through a hot-dipped process that dips the metal into zinc for a nice smooth coating. The coating creates a strong rust resistance and prolongs the life of the steel coils.
  • Galvannealed steel coil is created similar to galvanized steel through a hot-dipping process that soaks the metal into a liquid bath of zin alloy and then is passed through in-line heat treatment. Galvannealed steel is usually thinner and is more assessable to painting compared to other processes.
  • And More!

Galvanized Steel Coil Steel Coil

Surface Treatment Of Galvanized Steel Coil

Surface treatment type Code Feature
Chromic acid treatment C Good corrosion resistance, suitable for bare state
Chromic acid treatment + oiling S Good corrosion resistance
Phosphoric acid treatment (including sealing treatment) P A certain degree of corrosion resistance, good paint performance
Phosphoric acid treatment (including sealing treatment) + oiling Q It has certain corrosion resistance, good paint performance, and prevents rust during transportation and storage
Phosphoric acid treatment (excluding sealing treatment) T A certain degree of corrosion resistance, good paint performance
Phosphoric acid treatment (excluding sealing treatment) + oiling V Have certain corrosion resistance, good paint performance, and prevent rust
Oiled O Prevent rust during transportation and storage
No treatment M Suitable for immediate painting

Chromate treatment of galvanized steel coils is also called passivation treatment. Through passivation treatment, the surface structure and gloss of the galvanized layer can be improved, the corrosion resistance and service life of the galvanized layer can be improved, and the bonding force of the coating and the base metal can be improved.

Galvanized Steel Coil

The purpose of oiling galvanized steel coils is a protective layer is formed on the surface of the steel coil to prevent the surface from rusting.

Galvanized Steel Coil Applications

Galvanized steel coil has a wide range of applications, and its advantage is that it has a long anti-corrosion period. It is mainly used for home appliances, office panels, roof sheets, automotive panels, construction and substrate of prepainted steel coils.

Car board

The use of automotive plates must first be stamped and formed, and the steel plate is stamped into the required shape and size of the part.

Galvanized roof sheet

The performance requirements of galvanized roof panels mainly include the mechanical properties of the material (tensile strength, yield strength, elongation), coating performance (coating type, coating thickness and coating adhesion) .View more about PPGI and PPGL.

Home appliance office board

Including air conditioners, washing machines, refrigerators, photocopiers, etc., household galvanized sheets are mainly used for general forming applications and stamping.


Another use of galvanized steel coils is to be used as the substrate of prepainted steel coils. prepainted steel coils have polyethylene coatings than galvanized coils and are more durable.

Qinghe Steel stocks a wide range of galvanized coil sizes for your specific project needs. We offer quick delivery throughout the world. Contact us today to discuss galvanized steel coil for your project needs.

Read More:

5 Items You Need to Purchase galvanized Steel Coil

How Much Does Galvanized Steel Coil Cost?


Galvanized steel coil could be oiled?

Yes, it could be oiled. 8-20g per square meters. Oiling can prevent the oxidation of galvanized sheets in a short time.

Do you accept the test of zinc coating or not?

Yes, accept the test of zinc coating. We could send galvanized steel coil samples to the laboratory that the clients required. Or Chinese SGS.

Will galvanized steel coils rust?

Galvanized steel takes a long time to rust, but it will eventually rust. This type is carbon steel that has been galvanized or coated with a thin layer of zinc. The zinc acts as a barrier preventing oxygen and water from reaching the steel, providing advanced corrosion protection.

How do you control quality?

Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO,SGS. View more about our top 6 services>>

How to get samples?

FREE samples are available for your checking and testing. And to get free samples, please email us today, courier cost will be paid in your side.