Prepainted Galvanized Steel Sheet

SKU: HC-1144306732883591168

When steel components are used to make more complex finished products, they can be galvanized before the product is assembled. This is called pre-galvanizing, or "pre-galvanizing". It may also be referred to as "in-line", "continuous" or "rolled" galvanizing.

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Key Features

  • Third-Party Inspection Support
  • Sufficient Inventory Supply
  • International Standard Certification
  • Custom Processing Service

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Product Description

When steel components are used to make more complex finished products, they can be galvanized before the product is assembled. This is called pre-galvanizing, or "pre-galvanizing". It may also be referred to as "in-line", "continuous" or "rolled" galvanizing. S teel components (such as sheets or wires) are galvanized using an automated process before they are cut to size. This automated process will vary depending on the type of galvanized part. In general, steel components are immersed in a "galvanizing bath" of molten zinc for a short period of time. After the steel is removed from the bath, excess zinc is removed using a mechanical wiper, air knife, or steam. This leaves a relatively thin layer of galvanizing. Building Materials Field Electrogalvanizing has a wide range of applications in the field of building materials. First of all, electro-galvanizing can be used to manufacture construction steel, which not only prevents metal oxidation and prolongs its service life, but also enhances the toughness, strength and corrosion resistance of steel, and improves the performance of steel. Secondly, in the decoration of building exterior walls, electro-galvanized aluminum alloy, electro-galvanized iron alloy and other materials are also widely used, which can protect the steel structure and prevent oxidation, but also has the characteristics of beauty and fire prevention. Automobile Manufacturing Field Electrogalvanizing is also a commonly used material in the field of automobile manufacturing. Electro-galvanized coating can be used for surface protection and repair of automobile parts to avoid oxidation corrosion and damage, and to improve the service life of automobiles. The electro-galvanized coating can also be used in the manufacture of parts such as car frames and casings to avoid oxidation and corrosion, and improve the overall quality and durability of the car. Home Appliance Manufacturing Field In the field of home appliance manufacturing, galvanizing also has its important applications. For example, the manufacture of refrigerators, washing machines and other household appliances shell, lining, refrigerator and other parts, usually need to use electro-galvanized material for surface coating, to prevent metal oxidation, improve appearance and performance.

Specifications

Product Parameters

Product NamePrepainted Galvanized Steel Sheet
Thickness0.12mm-6.00mm
Width600mm-1500mm
Length1m-12m,Support Customization
StandardAISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc.
Zinc LayerHot Galvanizing: 60-275g/m²
Pre-galvanized: 80-275g/m²

Chemical Composition

StandardGradeCSiMnPSTi
Forcold Forming Chinese StandardDX51D+Z0.120.500.600.1000.0450.30
DX52D+Z0.120.500.600.1000.0450.30
DX53D+Z0.120.500.600.1000.0450.30
DX54D+Z0.120.500.600.1000.0450.30
DX56D+Z0.120.500.600.1000.0450.30
DX57D+Z0.120.500.600.1000.0450.30
Forcold Forming Japanese StandardSGCC0.150.500.800.0500.0300.025
SGCD1 SGCD20.12 0.100.50 0.500.60 0.450.040 0.0300.030 0.0300.025 0.025
SGCD30.080.500.450.0300.0300.025
SGCD40.060.500.450.0300.0300.025
For Structure Japanese StandardSGC3400.250.501.700.2000.0350.025
SGC400 SGC4400.25 0.250.50 0.501.70 2.000.200 0.2000.035 0.0350.150 0.150
SGC4900.300.502.000.2000.0350.025
SGC5100.300.502.500.2000.0350.025
For Structure AISI StandardS220GD+Z0.200.600.700.1000.0450.025
S250GD+Z0.200.600.700.1000.0450.025
S280GD+Z0.200.600.700.1000.0450.025
S320GD+Z0.200.600.700.1000.0450.025
S350GD+Z0.200.600.700.1000.0450.150
S550GD+Z0.200.600.700.1000.0450.150

Mechanical Properties

GradeYield Strength MPa≥Tensile Strength MPa≥Elongation A%≥
DX51D Z/ZM/AZ/AM240-380270-50022
DX52D Z/ZM/AZ/AM140-300270-42026
DX53D Z/ZM/AZ/AM140-260270-38030
DX54D Z/ZM/AZ/AM120-220260-35036
S220GD Z/ZM/AM22030020
S250GD Z/ZM/AZ/AM25033019
S280GD Z/ZM/AM28036018
S300GD A/AM30038018
S320GD Z/ZM/AM32039017
S350GD Z/ZM/AZ/AM35042016
S450GD A/AM45048015
S550GD Z/ZM/AZ/AM550550-

Galvanized Surface Selection

Zero SpangleMinimized SpangleNormal SpangleLarge Spangle
Use of The EnvironmentRecommended Zinc Thickness
Indoor UseZ10 or Z12 (100g/㎡or 120g/㎡)
SuburbsZ20 and Painting (200g/㎡)
Urban or Industrial AreaZ27 (270g/㎡) or G90 (US Standard) and painted
Coastal AreaThicker than Z27 (270g/㎡) or G90 (US Standard) and painted
Punch or Deep Drawing ApplicationThicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping
Surface Treatment TypeCodeFeatures
Chromic Acid TreatmentCGood corrosion resistance,suitable for bare state
Chromic Acid Treatment+OilingSGood corrosion resistance
Phosphoric Acid Treatment (Including Sealing Treatment)PHave a certain corrosion resistance,good paint performance
Phosphoric Acid Treatment (Including Sealing Treatment)+OilingQHas a certain corrosion resistance,good paint performance,prevent rust during transportation and storage
Phosphoric Acid Treatment (Excluding Sealing Treatment)THave a certain corrosion resistance,good paint performance
Phosphoric Acid Treatment (Excluding Sealing Treatment)+OilingVHas a certain corrosion resistance,good paint performance,and prevent rust
OilingOPrevent rust during transportation and storage
No TreatmentMSuitable for immediate painting

Material Comparison

Chinese StandardJapan StandardEuropean Standard
DX51D Z/DC51D Z (CR)SGCCDX51D Z
DX52D Z/DC52D ZSGCD1DX52D With
DX53D Z/DC53D Z/DX54D Z/DC54D ZSGCD2/SGCD3DX53D Z/DX54D Z
S220/250/280/320/350/550GD ZSGC340/400/440/490/570S220/250/280/320/350GD Z
DX51D Z/DD51D Z (HR)SGHCDX51D Z
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