Brief Introduction:

1. Prepainted Steel Coil is coated with organic layer, which provides higher anti-corrosion property and a longer lifespan than that of galvanized steel sheets.

2. The base metals for Prepainted Steel Coil consist of cold rolled, HDG electro-galvanized and hot-dip alu-zinc coated steel. The finish coats of Prepainted Steel Coil can be classified into groups as follows: polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc.

3. The production process has evolved from one-coating-and-one-baking to double-coating-and-double-baking, and even three-coating-and-three-baking.

Specification of galvanized sheet metal duct:

1. Thickness: 0.25-1.2mm

2. Width: 914*1250mm

3. Inner Diameter: 508mm 

4. Weight of Steel Coil: 4-10MT

5. Zinc coating: 50-275g/m2  AZ Coating : 50-150g/m²

6. Surface Texture: Normal Coated

7. Type of coating structure: 2/1 Coat the top surface of the steel sheet twice, 

    coat the bottom surface once, and bake the sheet twice.

8. Front side paint thickness: 15-25μm (bottome paint + top paint)

9. Back side paint thickness: 5-7μm

Mechanical Properties:

1. Mechanical properties of base metals

2. Common performance of front coating

 (1). Thickness: ≥20μm

(2). Pencil Hardness: 2H

(3). 60° specular glossiness of coating: >60

(4). 180°bend: ≤3T

(5). Impact: ≥9J

(6). Salt Fog Resistant: ≥500h

(7). Color difference: <0.8ΔE

More informations, pls feel free to contact me!

 Our Steel Coils Products and Production Equipment Photos.

Our Certifications of steel coil products.

Our Factory View.

  China Steel United Group well-known in domestic and abroad.Our production capacity is  5000 tons/month The steel coils are sold all over the world,including most parts of Asia,Europe,South Africa,North and south America.We have ability to produce:   

1. hot dip galvanised steel coil/sheet/strip (Zinc steel or GI)

2. hot dip Galvalume steel coil/plate/strip (Alu-zinc steel or GL)

3. Prepainted galvanising steel coil/sheet/strip(colour coated galvanising steel or PPGI)

4. pre paint galvalume steel coil/plate/strip(colour coated galvalume steel or PPGL)

What is Our Advantages?

1.Rapid response on any inquiry.

2.Competitive price with best service .

3.Professional inspection department to guarantee quality.

4.ISO System  API 5L certifa

5.SGS and BV Audited company .

6. Industry experience over 15 years.

7.Management Systems-Internal Software

8.Finished Product Inventory-More Than 5000 Tons.

9.Raw Material inventory -Over 6000 Mertic Tons.

10.Shipment of goods -More than 70 countries worldwide.

11.The most convenient transport and prompt delivery.

How to Contact Us?

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We will give you best price and service!