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Coated steel sheet

Wanzhi Steel has 3 coating production lines, which can provide various coated steel coils and steel plates to meet customers’ different applications.

Table of Contents

Wanzhi Coated steel sheet
Wanzhi Coated steel sheet
Product NameCoated Steel
Thickness(mm)0.12 – 4mm
Width(mm)600 – 2000mm
Length(mm)1000 – 6000mm or as your request
GradeSGCC,SGCH,G550,DX51D,DX52D,DX53D,DC01,DC02
Zinc Coating(g/㎡)30 – 275 g/㎡
Spangle TypeLarge zinc flower, ordinary zinc flower, small zinc flower, zero zinc flower
Coating TypeZ, ZE, AZ, ZA, ZF
Processing ServicesProfile processing, shearing, cutting, etc.
StandardAISI、ASTM、BS、GB、JIS
MOQ10 tons
PackingStandard export package or as per your requirements
Payment TermsEXW, FOB, CIF, CFR etc.
Delivery Time15-25 working days after payment

The coated steel sheet products provided by our factory include galvanized steel sheet, galvalume steel sheet, electro-galvanized steel sheet, hot-dip galvanized steel sheet, galvanized roof sheet, color-coated roof sheet, hot-dip galvalume steel, DX51D steel, ZAM Steel, etc.

Galvalume Steel Coil

Thicknesses:0.3mm-2mm
Width:600mm-1,500mm
Zinc Coating: 10-30 g/m²

Hot dip galvanized steel sheet
Galvanized corrugated roof sheet
Color coated steel sheets

Wanzhi coated steel plate substrate types include: hot-dip galvanized substrate (Z), electro-galvanized substrate (ZE), hot-dip aluminum-zinc alloy substrate (AZ), hot-dip galvanized aluminum alloy substrate (ZA), hot-dip galvanized iron alloy substrate (ZF). The following table shows the recommended coating weights in different corrosion environments and different substrates.

Substrate typeNominal coating weight (g/m2)
Corrosive environment
LowMediumHigh
Hot dip galvanized substrate (Z)90/90125/125140/140
Electrogalvanized substrate (ZE)40/4060/60~
Hot-dip aluminum-zinc alloy substrate (AZ)50/5060/6075/75
Hot-dip galvanized aluminum alloy substrate (ZA)65/6590/90110/110
Hot-dip galvanized iron alloy substrate (ZF)60/6075/7590/90
Recommended coating quality table
  • Application of hot-dip galvanized steel sheet: used in construction, packaging, vehicles, agricultural machinery, chemicals, textiles and daily necessities.
  • Application of hot-dip aluminum-zinc alloy coated steel: mainly used in construction, home appliances, electronic appliances and automobiles.
  • Application of color coated steel: generally used in construction, light industry, automobiles, electrical appliances, and other industries; also used in agricultural machinery, furniture and daily necessities.
  • Application of electrogalvanized coated steel: generally used in automobiles, electronics, home appliances and other industries.
Coated steel plate application
Coated steel plate application
Coated roofing applications
Coated roofing applications
Color coated steel plate application
Color coated steel plate application
Application of galvanized corrugated roof sheet
Application of galvanized corrugated roof sheet

Characteristics and uses of different zinc flowers

Surface morphology typeQuality characteristicsApplication
Small zinc flowerBecause the crystal growth of zinc spangles is controlled, the surface grain structure is fine; because the surface is uniform, the surface quality after painting is excellent; the paintability is better than conventional zinc spangles.Various containers, home appliances, electrical equipment housings, etc. that need to be further painted; and as the base material for coated steel sheets.
Zero spangleBecause the growth of zinc particles is completely controlled during the solidification process of molten zinc, it is difficult to see zinc flowers with the naked eye; because the surface is uniform, the surface quality after painting is excellent.The main use is in the automotive industry; and as a base material for coated steel sheets.
Finishing zinc flowerAfter the molten zinc solidifies, it is leveled to obtain an extremely smooth surface; because the surface is smooth, the surface quality after painting is excellent.In addition to being the base material for coated steel sheets, it has more advanced uses than small zinc flowers.

Wanzhi coated steel packaging

Wanzhi packaging adopts vertical packaging plus wooden pallet for coated steel coils, and wooden pallet for coated steel sheets. If you have special requirements for packaging, we can also meet your requirements.

Coated Steel Coil Packaging
Coated Steel Coil Packaging
Color coated steel plate packaging
Color coated steel plate packaging

Coated steel storage recommendations

  • It is recommended to store it indoors and avoid outdoor storage; the indoor environment should be dry and ventilated without corrosive gases.
  • If it is necessary to store it outdoors, it is necessary to place square sleepers under the steel as pads, choose a flat ground, and the top of the pads should be level so that the steel is on the same horizontal line. Finally, it is necessary to cover it with a rainproof cloth to prevent the steel from being directly exposed to the sun and rain.
  • The steel coil should be stored as much as possible in the state it left the factory, and do not pile it up to avoid damaging the coating.
  • The steel should be stored in a clean and tidy environment to avoid erosion by various corrosive media.
  • Color coated steel plates should not be placed in places with a lot of sand and dust. Because if there is sand and dust on the steel plate, it may damage the coating.

The surface of coated steel is coated with a layer of zinc (hot-dip galvanizing, electro-galvanizing), aluminum zinc, zinc aluminum, etc. The coating will form a protective film on the surface of the steel to prevent the steel from being corroded or oxidized, so coated steel can prevent rust.

The service life of steel that cannot be coated is different, and the service life is also affected by the application environment. The service life of Wanzhi Steel hot-dip galvanized steel is about 15-30 years, the service life of aluminum zinc steel is 25-50 years, and the service life of color coated steel plate is about 15-30 years.

  • First of all, both are corrosion-resistant, but the corrosion resistance mechanism is different. Coated steel is corrosion-resistant because of the surface coating, and stainless steel is corrosion-resistant because the steel contains elements such as chromium and nickel.
  • The appearance of the two is also different. Stainless steel is smoother and brighter than coated steel.
  • In addition, the price of stainless steel is much higher than that of coated steel.

Generally, we will use instruments to detect the coating thickness. We can use a thickness gauge to detect the coating thickness, and test the coating thickness by detecting several points on the surface of the steel plate.

The main purpose of coating steel plates is to protect steel, prevent steel from corrosion, and extend the service life of steel.