Galvanized Steel Coil
Hot Dip Galvanized Coil
Hot Dip Galvanized Coil DescriptionHot dip galvanizing is to make the molten metal react with the iron substrate to produce an alloy layer, so that the substrate and the coating are combined. Hot galvanizing is to pickle the steel and iron parts first. In order to remove the iron oxide on the surfac
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Hot Dip Galvanized Coil Description
Hot dip galvanizing is to make the molten metal react with the iron substrate to produce an alloy layer, so that the substrate and the coating are combined. Hot galvanizing is to pickle the steel and iron parts first. In order to remove the iron oxide on the surface of the steel and iron parts, after pickling, it is cleaned by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent into the hot dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.
Hot-dip galvanizing is one of the effective means to delay the environmental corrosion of iron and steel materials, it is the surface of the cleaned, activated iron and steel products immersed in molten zinc, through the reaction and diffusion between iron and zinc, in the iron and steel products surface plating good adhesion of zinc alloy coating. Compared with other metal protection methods, the hot-dip galvanizing process has advantages in the protection characteristics of the combination of physical barrier and electrochemical protection of the coating, the bonding strength of the coating and the substrate, the compactness, durability, maintenance-free and economy of the coating, and its adaptability to the shape and size of the product. At present, hot-dip galvanized products mainly include steel plates, steel strips, steel wires, steel pipes, etc., of which hot-dip galvanized steel plates account for a large proportion.
The production process of hot galvanizing is as follows:
Mother material → degreasing → water washing → pickling → water washing → rinsing → flux solution → drying → hot galvanizing → cooling → inspection → packaging
Scope of Application
For a long time, hot-dip galvanizing process has been favored by people because of its low plating cost, excellent protection characteristics and beautiful appearance. It is widely used in automobile, construction, household appliances, chemical industry, machinery, petroleum, metallurgy, light industry, transportation, electric power, aviation and marine engineering and other fields.
Product Parameters
Product Name Hot Dip Galvanized Coil Thickness 0.12mm-3.5mm Width 600mm-1500mm Length 508mm/610mm, Support Customization Standard AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc. Zinc Layer Hot Galvanizing: 60-275g/m² Pre-galvanized: 80-275g/m²
Chemical Composition
Standard Grade C Si Mn P S Ti Forcold Forming Chinese Standard DX51D+Z 0.12 0.50 0.60 0.100 0.045 0.30 DX52D+Z 0.12 0.50 0.60 0.100 0.045 0.30 DX53D+Z 0.12 0.50 0.60 0.100 0.045 0.30 DX54D+Z 0.12 0.50 0.60 0.100 0.045 0.30 DX56D+Z 0.12 0.50 0.60 0.100 0.045 0.30 DX57D+Z 0.12 0.50 0.60 0.100 0.045 0.30 Forcold Forming Japanese Standard SGCC 0.15 0.50 0.80 0.050 0.030 0.025 SGCD1 0.12 0.50 0.60 0.040 0.030 0.025 SGCD3 0.08 0.50 0.45 0.030 0.030 0.025 SGCD4 0.06 0.50 0.45 0.030 0.030 0.025 For Structure Japanese Standard SGC340 0.25 0.50 1.70 0.200 0.035 0.025 SGC400 0.25 0.50 1.70 0.200 0.035 0.150 SGC490 0.30 0.50 2.00 0.200 0.035 0.025 SGC510 0.30 0.50 2.50 0.200 0.035 0.025 For Structure AISI Standard S220GD+Z 0.20 0.60 0.70 0.100 0.045 0.025 S250GD+Z 0.20 0.60 0.70 0.100 0.045 0.025 S280GD+Z 0.20 0.60 0.70 0.100 0.045 0.025 S320GD+Z 0.20 0.60 0.70 0.100 0.045 0.025 S350GD+Z 0.20 0.60 0.70 0.100 0.045 0.150 S550GD+Z 0.20 0.60 0.70 0.100 0.045 0.150
SGCD2
0.10
0.50
0.45
0.030
0.030
0.025
SGC440
0.25
0.50
2.00
0.200
0.035
0.150
Mechanical Properties
Grade Yield Strength MPa≥ Tensile Strength MPa≥ Elongation A%≥ DX51D Z/ZM/AZ/AM 240-380 270-500 22 DX52D Z/ZM/AZ/AM 140-300 270-420 26 DX53D Z/ZM/AZ/AM 140-260 270-380 30 DX54D Z/ZM/AZ/AM 120-220 260-350 36 S220GD Z/ZM/AM 220 300 20 S250GD Z/ZM/AZ/AM 250 330 19 S280GD Z/ZM/AM 280 360 18 S300GD A/AM 300 380 18 S320GD Z/ZM/AM 320 390 17 S350GD Z/ZM/AZ/AM 350 420 16 S450GD A/AM 450 480 15 S550GD Z/ZM/AZ/AM 550 550 -
Galvanized Surface Selection
Zero Spangle Minimized Spangle Normal Spangle Large Spangle
Use of The Environment Recommended Zinc Thickness Indoor Use Z10 or Z12 (100g/㎡or 120g/㎡) Suburbs Z20 and Painting (200g/㎡) Urban or Industrial Area Z27 (270g/㎡) or G90 (US Standard) and painted Coastal Area Thicker than Z27 (270g/㎡) or G90 (US Standard) and painted Punch or Deep Drawing Application Thicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping
Surface Treatment Type Code Features 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 Have a certain corrosion resistance, good paint performance Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling Q Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage Phosphoric Acid Treatment (Excluding Sealing Treatment) T Have a certain corrosion resistance, good paint performance Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling V Has a certain corrosion resistance, good paint performance, and prevent rust Oiling O Prevent rust during transportation and storage No Treatment M Suitable for immediate painting
Material Comparison
Chinese Standard Japan Standard European Standard DX51D Z/DC51D Z (CR) SGCC DX51D Z DX52D Z/DC52D Z SGCD1 DX52D With DX53D Z/DC53D Z/DX54D Z/DC54D Z SGCD2/SGCD3 DX53D Z/DX54D Z S220/250/280/320/350/550GD Z SGC340/400/440/490/570 S220/250/280/320/350GD Z DX51D Z/DD51D Z (HR) SGHC DX51D Z
Greatest product everGalvanized coils are our top choice for durability and consistency. The zinc layer uniformity saves us time in post-processing, and your team’s technical support is always helpful. |
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Mahan Selon |
Greatest product everWe have been purchasing yulun galvanized steel coils for the quality has consistently exceeded our expectations. The coating uniformity, corrosion resistance, and surface finish meet our strict standards, making them ideal for construction. |
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