Shandong Churan Metal Materials Co., Ltd.

Electro-Galvanized, EG

Electro-galvanized (EG) steel is produced by electrolytically depositing a layer of zinc onto the surface of cold-rolled steel. This process forms a uniform, smooth, and dense zinc coating while preserving the base metal's mechanical properties. EG steel is typically supplied in coil or sheet form and is suitable for cutting, slitting, and profiling for various applications.
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Product Details

Electro-Galvanized, EG

Electro-galvanized (EG) steel is produced by electrolytically depositing a layer of zinc onto the surface of cold-rolled steel. This process forms a uniform, smooth, and dense zinc coating while preserving the base metal's mechanical properties. EG steel is typically supplied in coil or sheet form and is suitable for cutting, slitting, and profiling for various applications.

Chemical degreasing → hot water washing → water washing → electrolytic degreasing → water washing → acid washing → rust removal → water washing → electrogalvanizing process → water washing → passivation → hot water washing → drying → quality inspection → packaging and sales


Scope of Application

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.
 

Product Parameters

Product NameHot Dip Galvanized Sheet
Thickness0.12mm-6.00mm
Width20mm-1500mm
Length1m-12m, Support Customization
StandardAISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.
Zinc LayerHot Galvanizing: 15-275g/m²
Pre-galvanized: 15-275g/m²

 

Chemical Composition

StandardGradeCSiMnPSTi

Forcold Forming

Chinese Standard

DX51D+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 Standard

SGCC0.150.500.800.0500.0300.025
SGCD1
SGCD2
0.12
0.10
0.50
0.50
0.60
0.45
0.040
0.030
0.030
0.030
0.025
0.025
SGCD30.080.500.450.0300.0300.025
SGCD40.060.500.450.0300.0300.025

For Structure

Japanese Standard

SGC3400.250.501.700.2000.0350.025
SGC400
SGC440
0.25
0.25
0.50
0.50
1.70
2.00
0.200
0.200
0.035
0.035
0.150
0.150
SGC4900.300.502.000.2000.0350.025
SGC5100.300.502.500.2000.0350.025

For Structure

AISI Standard

S220GD+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 Selectio

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

Packing and shipping

Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO/BIS etc certificate.All the customers give good appreciation to our products.We are glad to be your good partner.

 

 

Application Areas

Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments. ‌

 

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Company Mission Focused on the supply and custom processing of metal materials, we leverage reliable sourcing, consistent quality, and efficient service to help clients reduce costs and enhance efficiency, create opportunities for our employees, and empower the development of the industry as a whole.

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Rooted in the Qilu region, reaching across the nation, and expanding globally, we aspire to become a comprehensive supply chain service provider within the metal materials industry—distinguished by high quality and an impeccable reputation—and to build a respected, sustainable industrial brand destined to endure for a century.

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With a commitment to excellence, innovation, and sustainability, the company has established itself as a trusted partner in the international steel industry.After nearly two decades of relentless endeavour, our client base now spans over 110 countries and regions across Europe, the Middle East, South America, and Southeast Asia.

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Focused on the supply and custom processing of metal materials, we leverage reliable sourcing, consistent quality, and efficient service to help clients reduce costs and enhance efficiency, create opportunities for our employees, and empower the development of the industry as a whole.

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