↵
Qingdao Heyan Steel Structure Co., Ltd., ("HEYAN STEEL" for short )specializes in supplying coated and plated products, as well as a wide range of steel and non-ferrous metal materials.
Heyan Steel is a company specializing in the production and sales of galvanized steel. Committed to the research and development and production of metal sheets, and leveraging the advantages of local industrialization and large-scale production of metal sheets, it has formed four major industrial sectors: hot-dip aluminum-zinc-silicon steel sheets, color-coated steel sheets, prefabricated building materials, and cleanroom enclosure systems.
Processing services: processing, such as slitting, cutting, stamping, special-shaped processing, forming, painting, etc.
Galvanized Steel Coil Specification
| Name |
Z275 Galvanized Coil |
Hot-dip galvanized coils |
Electro-galvanized coil |
DX51d Galvanized Coil |
| Picture |
 |
 |
|
 |
| Thickness | 0.12mm-6mm | 0.12mm-6mm | 0.12mm-6mm | 0.12mm-6mm |
| Width | For thicknesses below 0.5mm, the standard widths are 1000mm and 1200mm; for thicknesses above 1000mm, the standard width is 1250mm. | For thicknesses below 0.5mm, the standard widths are 1000mm and 1200mm; for thicknesses above 1000mm, the standard width is 1250mm. | For thicknesses below 0.5mm, the standard widths are 1000mm and 1200mm; for thicknesses above 1000mm, the standard width is 1250mm. | For thicknesses below 0.5mm, the standard widths are 1000mm and 1200mm; for thicknesses above 1000mm, the standard width is 1250mm. |
| Zinc Coating | 30g/㎡-275g/㎡ | 30g/㎡-275g/㎡ | 30g/㎡-275g/㎡ | 30g/㎡-275g/㎡ |
| Standard | AISI、ASTM、BS、GB、JIS | AISI、ASTM、BS、GB、JIS | AISI、ASTM、BS、GB、JIS | AISI、ASTM、BS、GB、JIS |
| difference | Z275 indicates that the zinc coating is 275g/m². | Hot-dip galvanized coils represent the hot-dip process. | The production process represented by electroplated zinc coils is electroplating. | DX51d galvanized coil means that the galvanized substrate is DX51d. |
| Main application scenarios | Z275 hot-dip galvanized coils are mainly used in industries with high corrosion resistance requirements, such as construction, transportation, power, automobile manufacturing, and petrochemical industries. | Hot-dip galvanized coils are suitable for large structures, outdoor equipment, and other applications requiring high corrosion resistance. | Electro-galvanized coils are more suitable for small parts, interior decoration, and other applications where corrosion resistance is not a major concern and aesthetics and cost are important. | DX51D galvanized coils are widely used in various fields such as construction, home appliances, transportation, industry, and light industry due to their excellent formability, corrosion resistance, and cost-effectiveness. Specific applications include building roof panels, drainage pipes, and light steel framing; appliance casings and linings; automotive interior and exterior panels; highway guardrails; and industrial pipelines and outdoor cabinet frames. |
| Price difference | Z275 and hot-dip galvanized coils (usually SGCC) are more expensive | Z275 and hot-dip galvanized coils (usually SGCC) are more expensive | Electro-galvanized coils (usually SECC) are cheaper | Dx51d refers to the steel grade of galvanized coils. The price difference depends on the thickness of its zinc coating (such as Z275, Z100, etc.) and the production process. |
| Quality differences | Good Corrosion Resistance | Good Corrosion Resistance | Poor Corrosion Resistance | With a fixed strength, corrosion resistance is determined by the thickness of the zinc layer. |
| Tolerance | +/-0.02 mm | +/-0.02 mm | +/-0.02 mm | +/-0.02 mm |
| Surface | It is a material grade designation and is not related to the specific zinc flower, but it usually refers to the sheet material that has undergone hot-dip galvanizing. Its appearance depends on the process control of hot-dip galvanizing. | Zinc flowers are typically large and irregular, and are natural zinc flowers. | Electroplated zinc coils have no zinc flowers and a smooth surface. | It is a material grade designation and is not related to the specific zinc flower, but it usually refers to the sheet material that has undergone hot-dip galvanizing. Its appearance depends on the process control of hot-dip galvanizing. |
Galvanized Steel Coil Surface
GALVANIZED STEEL--HEYAN COMPANY
Heyan currently has 3 galvanizing production lines and 3 color coating production lines, producing coils and sheets of various grades. We are committed to providing customers across all industries with the most cost-effective products and the highest quality service.
Our Partners
Our raw materials come from well-known Chinese manufacturers. Today, we collaborate with over 110 countries across Southeast Asia, South America, the Middle East, North America, and Europe. With growing international demand, Heyan Steel has earned global customer trust through its extensive production experience, robust expertise, and dependable after-sales support.
HEYAN Production Lines
Based in Binzhou, we operate three production lines dedicated to coated and plated products. Additionally, we have invested in facilities for seamless steel pipes, stainless steel, aluminum profiles, and other items.
Galvanized Line
The image shows our first scissor line.
In June 2011, our first slitting line began operation. In the following years, we successively established and successfully put into operation three more galvanizing and color coating production lines. Currently, our annual output can reach 600,000 tons.
Prepainted Line
This is our second color coating production line.
In September 2012, our second color coating production line was officially established and put into production on December 12. It mainly produces color-coated galvanized coils, color-coated aluminum-zinc coated coils, color-coated aluminum coils, and color-coated stainless steel.
Our Inventory Warehouses
We have invested in various types of steel and participated in the construction of warehouses. We maintain inventory warehouses in various regions throughout China, ensuring we can promptly provide suitable products to meet customer requirements.
10,000-ton stainless steel warehouse
Automobile manufacturing
20,000-ton steel pipe warehouse
6000-ton galvanized coil warehouse
2000-ton rebar warehouse
600-ton aluminum coil and sheet warehouse
Galvanized Coil Packaging
Heyan Steel has three types of steel coil packaging
Simple kraft paper packaging
The first is simple kraft paper packaging, which is suitable for short-distance transportation and has a low cost;
Vertical steel coil packaging
The third is the vertical coil mode (coil core facing up), which prevents deformation caused by heavy goods squeezing, but has a higher cost.
Export-grade packaging
The second is standard kraft paper plus iron sheet packaging, which has a moderate cost;
Other Galvanzied Products made by Galvanzied Coil
Galvanized coils come in many varieties.
-
![High Quality Z275 Galvanized Steel Coil Manufacturer - Custom Sizes & Fast Shipping]()
High Quality Z275 Galvanized Steel Coil Manufacturer - Cu...Thickness: 0.12mm - 4.0mm Width: 600mm - 1500mm Zinc Coating: 275g/m² Material: DX51D / DX52D / SGCCview more -
![Hot Dip Galvanized Coil]()
Hot Dip Galvanized CoilProduct Name:Hot Dip Galvanized Coil Standard:AISI,ASTM,GB,JIS Thickness:0.12mm-6mm Width:For thicknesses below 0.5mm, the standard widths are 1000mm and 1200mm; for thicknesses above 1000mm,...view more -
![Electro-galvanized Coil]()
Electro-galvanized CoilElectro-galvanized Coil refers to a metal material that is treated on the surface of the steel coil by electroplating. It improves the corrosion resistance and oxidation resistance of steel by...view more -
![DX53D Galvanized Coil]()
DX53D Galvanized CoilDX53D refers to a steel plate with good cold forming performance and hot-dip galvanized corrosion protection, which complies with EN 10346 standard.view more -
![DX51D Galvanized Coil]()
DX51D Galvanized CoilDX51D refers to a steel plate with good cold forming performance and hot-dip galvanized corrosion protection, which complies with EN 10346 standard.view more -
![G40 G60 G90 Galvanized Coil]()
G40 G60 G90 Galvanized CoilG40 G60 G90 galvanized coil refers to galvanized coils with zinc content of 120g, 180g, and 275g per square meter respectively. G90 is an imperial unit used to indicate the thickness of the...view more
|
Product Name |
DX53D galvanized coil |
|
Thickness |
0.12-3.5mm |
|
Width |
600-1500mm |
|
Length |
508mm,610mm,Support customization |
|
Standard |
AISI,ASTM,DIN,JIS,GB,SUS,EN. |
|
Zinc Coating |
Hot dip galvanizing60-275g/m2 |
|
Pre-galvanizing:80-275g/m2 |
Galvainzed Coil Composition
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
Ti |
|
For cold 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 |
|
|
For cold 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 structures Japanese standards |
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 structures AISI standards |
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 |
Galvainzed Coil 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+AZ/AM |
300 |
380 |
18 |
|
S320GD+Z/ZM/AM |
320 |
390 |
17 |
|
S350GD+Z/ZM/AZ/AM |
350 |
420 |
16 |
|
S450GD+AZ/AM |
450 |
480 |
15 |
|
S550GD+Z/ZM/AZ/AM |
550 |
550 |
－ |
|
Usage Environment |
Recommended zinc layer thickness |
|
Indoor use |
Z10 or Z12 (100g/㎡or 120g/㎡) |
|
Suburbs |
Z20 and paint (200g/㎡) |
|
Urban or industrial area |
Z27 (270 g/㎡) or G90 (US standard) and painted |
|
Coastal Areas |
Thicker than Z27 (270g/㎡) or G90 (US standard) and painted |
|
Stamping or deep drawing applications |
Thinner than Z27 (270g/㎡) or G90 (US standard) to avoid coating peeling after stamping |
Benefits of Galvanized Coil
Protection
Galvanised coating is considered as one of the toughest coatings available in the market. It offers protection offers resistance from mechanical damage that may happen during transit or erection of the structure. Additionally, it protects steel from rust and corrosion. Adding into it, it is suitable for all weather conditions, so weather change does not affect the steel.
Durability
Since it protects steel from rust, corrosion, and weather conditions, chances of steel getting damaged are lesser. This results in longer life span.
Low-maintenance
Galvanised steel parts and structures need low maintenance. As a result, your efforts on maintenance are saved.
Cost-efficient
The initial cost of galvanised steel may be high. However, you save on maintenance and repair cost as it is a low-maintenance product. Additionally, coating offers durability. Therefore, it turns out to be cost effective in longer run.
Galvanized steel coil types
There are essentially two types of galvanized steel coils based on the zinc coating process:
Hot-Dip Galvanized Steel Coils
The most popular and commonly utilized form of galvanized steel coils. Steel coils are immersed in a bath of molten zinc during the hot-dip galvanizing process, which establishes a metallurgical bond with the steel surface. This results in a thick and long-lasting zinc coating with exceptional corrosion resistance. Hot-dip galvanized steel coils are well-known for their rust-resistant properties and are widely employed in a variety of sectors.
Electro-Galvanized Steel Coils
Electrolysis is used to apply a thin layer of zinc to steel coils during the electro-galvanizing process. Electro-galvanizing, unlike hot-dip galvanizing, does not require immersion in molten zinc. When opposed to hot-dip galvanized coils, electro-galvanized steel coils have a thinner zinc covering. They have modest corrosion resistance and are frequently employed in applications where a lighter coating is enough or a smooth and consistent look is needed.
Building and Construction: Widely used in roofing, siding, gutters, and decking, galvanized steel offers protection against rust even in harsh outdoor conditions.
Automotive Industry: Essential for manufacturing vehicle panels, chassis parts, and other components due to its impact resistance and rust prevention qualities.
Appliances: Provides sturdy support and rust protection for appliances like refrigerators and washing machines.
Storage Systems: Ideal for shelving, containers, and cabinets, offering durability for both indoor and outdoor use.
Infrastructure: Used in lamp posts, railings, and bollards due to its resistance to corrosion in moist or polluted environments.
Manufacturing Process
Surface Preparation
The journey begins with the preparation of the steel substrate. Raw steel coils are subjected to a thorough cleaning process to remove any contaminants, such as rust, oil, or dirt, from the surface. This preparation ensures optimal adhesion of the zinc coating that will be applied in subsequent steps.
Galvanizing Bath
Once cleaned, the steel coils are immersed in a bath of molten zinc. This step, known as hot-dip galvanizing, is pivotal to the process. The zinc bath is maintained at a high temperature to ensure proper metallurgical bonding between the zinc and the steel. This metallurgical bond enhances the durability and longevity of the resulting galvanized steel.
Alloying and Solidification
As the steel coils are withdrawn from the galvanizing bath, excess molten zinc drips off, leaving behind a layer of zinc that adheres to the steel surface. During this phase, alloying may occur between the zinc and the steel, further enhancing the bond between the two materials. The zinc layer solidifies on the steel substrate, forming the protective coating.
Cooling and Inspection
The galvanized steel coils are then cooled, allowing the zinc coating to fully solidify and bond to the steel. After cooling, the coils undergo thorough inspection to ensure uniformity of the coating thickness and its adherence to the steel. This inspection is crucial to ensuring that the final product meets the required quality standards.
Post-Treatment (Optional)
Depending on the intended application and desired characteristics, galvanized steel coils may undergo additional treatments. One common post-treatment is passivation, which involves applying a chemical solution to the zinc coating to enhance its corrosion resistance. Additionally, a topcoat may be applied for aesthetic purposes or to provide additional protection against specific environmental factors.
Surface Treatment
Surface treatment of galvanized steel coils is an important aspect of the production process, as it enhances the corrosion resistance and appearance of the final product, as well as its suitability for painting or further processing. Here are some common surface treatments applied to galvanized steel coils:
Passivation (Chromate Coating): A passivation layer, often a chromate-based solution, is applied to the surface to enhance corrosion resistance. This layer helps to prevent the formation of white rust during storage and handling. Non-chromate passivation solutions are also used for environmental reasons.
Oiling: A thin layer of oil is applied to the surface to prevent rusting during storage and transport. The oil provides a barrier against moisture and contaminants.
Phosphate Treatment: This involves applying a phosphate chemical to create a layer that improves paint adhesion and increases corrosion resistance.
Anti-fingerprint Treatment: A nano-coating is applied to the surface to resist fingerprints and smudges, which is particularly useful for products that will be handled during installation or used in appliances.
Our Certificate
FAQ
We're professional galvanized coil manufacturers in China, specialized in providing high quality products with low price. We warmly welcome you to wholesale discount galvanized coil from our factory. For pricelist, contact us now.
DX53D Galvanized Coil, G40 G60 G90 Galvanized Coil, Hot Dip Galvanized Coil
