Household Prepainted Galvanized Steel Coil Industrial Construction

Household Prepainted Galvanized Steel Coil Industrial Construction

Description:

Galvanized sheet or coil is defined as a carbon steel sheet coated with zinc on both sides. Continuous hot

dipping, or electro-galvanizing are the two processes used to produce galvanized sheet and coil. Generally speaking, the hot

dip process consists of passing the steel through a bath of molten zinc. The electro-galvanizing process consists of the application of zinc by electrolytic disposition. The result is a layer of

zinc tightly adhering to the base metal through an iron-zinc bonding layer.

A zinc coating is one of the most effective and economical methods of protecting bare steel from a

corroding environment. The zinc not only serves as a barrier between the steel and the environment, it will

sacrifice itself to protect the underlying steel sheet. Sacrificial, or galvanic protection occurs when two

dissimilar metals are in contact and coupled with water and oxygen. Zinc corrodes preferentially to the iron

in steel. This protection prevents corrosion of the steel at areas not covered with zinc. Thus, the spread of

corrosion from cut edges, drill holes, etc. is minimized.

Our Hot-dipped Galvanized products, as well as our Galvannealed (zinc-iron alloy coated) products are

manufactured to ASTM A-653 specifications. Our Electrogalvanized products conform to ASTM A-879.

Material Types for Galvanized Coil and Sheet Steel

Commercial Steel (CS Types A, B, and C)

Forming Steel (FS Types A and B)

Deep Drawing Steel (DDS Types A and C)

Extra Deep Drawing Steel (EDDS)

Structural Steel (SS) – further designated by Grades (33,37,40,50,80)

High Strength Low Alloy Steel (HSLAS)

In addition, the Hot Dipped Galvanized as well as the Galvannealed products are available in a variety of

coating weights including G-90, G-60, G-40, and G-30 for the Hot Dipped Galvanized products, and A-60

and A-40 for the Galvannealed products.

Typical Applications for Galvanized Coil and Sheet Steel

Typical applications for Galvanized Coil and Sheet products include exterior building products, ductwork,

HVAC products, flashing, electrical boxes and other electrical products, roofing, doors, sashes, automotive

parts, appliances, commercial and residential steel framing, truss plates, metal building purlins, and any

other products requiring a corrosion resistant material. As the primary supplier of galvanized sheet and coil

to over 1500 customers for over 20 years, just let us know the end use of your product and we can help

you find the material that is right for you!

Hongfa Steel Group, was founded in 1993, the headquarter is located in East Industrial Park of Dongguan City. As a large-scale leading Group, who has been Integrated by pre-fabricated steel structure materials manufacturing, design, installation, modular house fabricating, steel coil, processing center, steel business international trading, sectional steel, hot-rolled steel, long steel and flat steel trading. After more than 20 year development, Hongfa group have 6 big factories in mainland China, and 3 company in Hong Kong, and one office in Singapore.