Sky Steel Structure Co., Ltd. is a large modern steel joint venture integrating sintering, ironmaking, steelmaking, continuous casting, steel rolling, metal product production, and other processes.
Our company mainly deals in high-quality and competitively priced steel wire, carbon steel pipes, carbon steel plates, profiles, galvanized products, iron wire, steel mesh, and more. We can also customize products in various sizes, materials, standards, and coatings according to customer requirements.
Production Market
Our company is a comprehensive enterprise integrating production, processing, cutting, sales and transportation. Our steel products have been exported to more than 30 countries and regions such as Europe, North America, South America, Australia and Japan.
Our Service
While the company continues to develop and grow, it has established a retail and wholesale warehouse of 10,000 square meters, with more than 20,000 tons of steel coils, steel plates, PPGI, various types of steel, special steel, stainless steel products, etc., to meet the urgent needs of various customers for different products in quality, quantity, variety and other aspects. Provide solid support for after-sales service, to achieve timely delivery.
Our Certificate
The company has successively passed ISO9001 quality management system certification, CE certification, and GOST certification, Received "Enterprise Credit Rating Certificate", "Credit Rating Certificate", "Quality Service Integrity Unit Certificate", "Integrity Supplier Level Certificate", "Service Integrity Level Certificate", "Credit Unit Certificate", "Contract Integrity Enterprise Certificate", "Integrity Complaint Free Unit Certificate", "Industry Integrity Unit Level Certificate", "Integrity Entrepreneur Certificate", "Integrity Business Demonstration Unit Certificate", "Integrity Professional Manager Certificate And many honors.
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Prepainted PPGI Cold Rolled Steel CoilPrepainted PPGI Cold Rolled Steel Coil takes cold - rolled steel sheets as the base material. Firstly, the surface of the steel sheet undergoes chemical pretreatment, including degreasing, phosphating, passivation, etc., to remove...view more
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DX51d Metal Sheets Galvanized Steel Gi CoilsGalvanized steel coil is a rolled steel product coated with a protective zinc layer, produced through continuous galvanization processes. The coil form allows efficient storage, transportation, and further processing for various...view more
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DX54D Corrugated Galvanized Roofing SheetDX54D corrugated galvanized roofing sheet is a popular choice for construction. Made from high - quality low - carbon steel, it features a durable hot - dip galvanized coating that offers excellent corrosion resistance, significantly...view more
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CGCC Color Coated CoilCGCC Color Coated Coil, crafted from cold - rolled or (aluminum) galvanized steel coils, is a pre - finished product. After undergoing surface chemical treatment, it has one or more layers of organic coatings applied via roll coating....view more
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SGCC Corrugated Galvanized Roofing Sheet For BuildingSGCC Corrugated Galvanized Roofing Sheet is a popular building material. Made through hot - dip galvanizing and roll - forming, it combines a zinc - coated steel sheet with a corrugated shape. This design offers excellent corrosion...view more
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RAL Color Coated Coil For Construction IndustryRAL Color Coated Coil is a versatile material widely used in construction, home appliances, and furniture. It features a metal substrate, typically steel or aluminum, coated with layers of organic paint. These coatings offer vibrant...view more
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DC51D Galvanized Carbon Steel Coil For ConstructionDC51D is a galvanized carbon steel coil conforming to the European Standard EN 10346. It is a structural-grade steel with excellent formability and corrosion resistance due to its zinc coating. It is widely used in construction,...view more
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S235JR Galvanized Carbon Steel CoilThe S235JR Galvanized Carbon Steel Coil is a type of steel product. It conforms to the EN 10025 standard. The "S235JR" grade indicates its mechanical properties, with a relatively low - to - medium yield strength, making it suitable for...view more
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Q355 Galvanized Carbon Steel Coil For BuildingQ355 Galvanized Carbon Steel Coil is a high-strength, corrosion-resistant steel product widely used in construction and structural engineering. It combines the durability of Q355 low-alloy steel (equivalent to ASTM A572 Grade 50) with...view more
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DC03 Cold Rolled Carbon Steel CoilDC03 Carbon Steel Coil is a high - quality cold - rolled steel product. With low carbon content, it offers excellent formability, allowing for easy shaping into complex parts without cracking. It features a smooth, defect - free...view more
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Ppgi Coil Prepainted Gi Steel CoilColor-coated coils are products made with substrates such as hot-dip galvanized sheets, hot-dip galvalume sheets, and electro-galvanized sheets. After surface pretreatment, one or several layers of organic coatings are applied to the...view more
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TC105 High Carbon Steel Coil For SaleTC105 is a high carbon steel coil grade that offers excellent strength and wear resistance properties. This material is commonly used in applications requiring durability and high mechanical performance.view more
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Thickness: |
0.25--1.2 mm |
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Width: |
600--1250 mm |
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Coil weight: |
3--12 MT or as requirements |
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Coating: |
AZ30-AZ150g/m2 |
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Surface types: |
2/1 Coat the top surface of the steel sheet twice, coat the bottom surface once, and bake the sheet twice.Front side paint |
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Thickness: 15-25μm (bottome paint + top paint) Front side paint thickness: 15-25μm (bottome paint + top paint) Back side paint |
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Thickness: 5-10μm |
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Surface Treatment: |
Normal Coated, RAL system, as customers' requirement |
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Standard: |
ASTM,BS,EN,JIS |
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Grade: |
CQ, G550, Grade33, Grade37, Grade40 |
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Paint type: |
PE |
Good adhesion, durability, chemical resistance. Service life is 7-10 years |
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SMP |
Excellent hardness, heat resistance. It has the good durability and powder resistance, giossy resistance. Service life is 10-12 years |
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HDP |
Better UV resistance, high durability , the mainly performance between PE and PVDF coating. Service life is 10-1S years |
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PVDF |
Best formatlity and color retention, excellent outdoor durbty, dust resistance, solvent resistance Service life is 20-25 years |
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Payment: |
T/T ,L/C at sight |
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Color: |
As RAL NO. |
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Commodity |
Corrugated roofing sheets |
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Type of coating: |
Hot dipped galvanized/Prepainted |
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Zinc coating: |
Z40-275g/m2 |
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Standard |
JIS G3302,ASTM A653,EN10327/DIN 17162 |
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Grade |
SGCC/CS-B/DX51D or equivalent. |
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Types |
Commercial / Drawing / Deep Drawing / Structural Quality |
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Surface treament |
Chromated / skinpass/ oiled/slightly oiled/ dry |
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Surface finished |
Minimized spangle / regular spangle/ big spangle |
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Width |
688/750/820/850/900/915 |
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Thickness |
0.12-2.5mm (0.14-0.5mm is the most advantage thickness) |
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Color |
RAL or customization |
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Bundle Weight |
2-3Ton Per Pallets |
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Package |
Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by seven steel belt.or according to customer's requirement |
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Application |
Industrial panels, roofing and siding for painting |
Product Production Process
Raw Material Preparation:
The first step in the production of corrugated panels is preparing the raw materials. Typically, these include metal plates (such as steel or aluminum), plastic, or cardboard.
Coiling:
The raw material is processed by coiling, which rolls the sheet metal or other materials into the desired thickness and width.
Stamping and Forming:
The coiled metal plate is stamped using a punching press to create the wavy pattern of the corrugated panel, according to design requirements.
Cutting:
The stamped metal plate is then cut to the required length for further processing and use.
Coating Treatment:
Some corrugated panels undergo surface coating treatments to enhance corrosion resistance or improve aesthetics. Common methods include spraying and baking.
Packaging and Shipping:
Once the corrugated panels are fully processed, they are packaged and prepared for shipment to customers or warehouses.

PPGI (Pre-Painted Galvanized Iron) Applications
Construction Field
Color coated steel coils are widely used in building applications such as roofs, wall panels, doors and windows, roof trusses, partitions, and ceilings. These coils not only offer aesthetic appeal but also provide excellent waterproofing, fire resistance, and thermal insulation, making them an ideal building material.
Home Appliance Field
Color coated steel coils are commonly used in the manufacturing of home appliance casings, including refrigerators, air conditioners, washing machines, microwaves, and electric ovens. They are characterized by wear resistance, corrosion resistance, easy cleaning, and visual appeal, meeting both the appearance and performance needs of the home appliance industry.
Transportation Field
Color coated steel coils are used in components such as body panels, roofs, chassis, and frames. They are lightweight, strong, corrosion-resistant, wear-resistant, and visually appealing, enhancing both the safety and appearance of vehicles.
Furniture Field
These coils are used in the production of furniture such as office furniture, kitchen units, bookshelves, and wardrobes. Their advantages include aesthetic value, wear resistance, ease of cleaning, and corrosion resistance — all of which meet the visual and performance requirements of the furniture industry.
Electronic Equipment Field
Color coated steel coils are used in casings for electronic devices such as televisions, audio systems, and computers. Their properties include good appearance, wear and corrosion resistance, and resistance to electromagnetic interference, which enhance both the safety and aesthetic quality of electronic equipment.
PPGI sheet specification
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Item |
Product Parameter |
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Product name |
PPGI steel sheet, color-coated galvanized steel, color-coated steel sheet |
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Standard |
AISI,ASTM,JIS,BS,DIN,GB |
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Zinc coating |
30-275g/m² |
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Thickness |
0.12-2.00mm (±0.001mm) |
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Width |
600-1250mm (±0.06mm) |
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Coating structure |
PE, SMP, HDP, PVDF, PU |
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Paint coating |
Top layer is 15 to 25 um, bottom layer is 7 ±2 um |
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Surface Colors |
RAL series, wood grain, stone grain, frosted grain, camouflage grain, marble grain, pattern, nano, etc. |
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Substrate type |
Hot-dip galvanized steel, electro-galvanized steel |
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Steel grade |
CS-A、B、C/FS-A/B、DQ/SS-33、37、40、50 and 80,etc. |
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Inspection |
Hardness, T-bend, film thickness, cross-hatch adhesion ,etc. |
PPGI sheet weight chart
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Size in mm |
Size in Gauge |
Weight in Kgs. Per Feet. |
Weight in Kgs. Per Mtr. |
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3.15 |
10 |
2.300 |
24.750 |
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2.80 |
11 |
2.045 |
21.980 |
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2.50 |
12 |
1.826 |
19.625 |
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2.24 |
13 |
1.636 |
17.584 |
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2.00 |
14 |
1.461 |
15.700 |
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1.80 |
15 |
1.314 |
14.130 |
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1.60 |
16 |
1.168 |
12.560 |
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1.40 |
17 |
1.022 |
10.990 |
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1.25 |
18 |
0.913 |
9.850 |
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1.12 |
19 |
0.818 |
8.792 |
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1.00 |
20 |
0.730 |
7.850 |
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0.90 |
21 |
0.657 |
7.065 |
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0.80 |
22 |
0.585 |
6.280 |
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0.63 |
24 |
0.461 |
4.950 |
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0.50 |
26 |
0.365 |
3.925 |
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0.40 |
28 |
0.293 |
3.140 |
Certificate




As one of the leading PPGI suppliers in China, we warmly welcome you to buy cheap PPGI for sale here from our factory. All our products are with high quality and low price. Contact us for free sample.
Color Coated Steel Coil, medium plate, Wear Resistant Steel Plate

