prepainted Rolled Steel Coil for Construction Roofing constrution

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50 m.t.
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30000 m.t./month

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Structure of Prepainted Rolled steel Coil for Construction Roofing

 prepainted Rolled Steel Coil for Construction Roofing constrution

Description of Prepainted Rolled steel Coil for Construction Roofing
Prepainted Rolled steel Coil is a kind of coated steel coil/sheet. With the cold rolled steel of different strength and thickness as substrate, it is produced through applying Al-Zn coat on both faces by hot dip process. In its coating, Al accounts for about 55%, Si 1.6%, while the remaining is Zn. Aluminum zinc coils enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn. And its surface has bright silver color and regular embossed-like figure, which are highly decorative. 

prepainted Rolled Steel Coil for Construction Roofing constrution

prepainted Rolled Steel Coil for Construction Roofing constrution

prepainted Rolled Steel Coil for Construction Roofing constrution


Main Feature of Prepainted Rolled steel Coil for Construction Roofing

1.Corrosion resistance: It mainly depends on the aluminum protection. When the zinc being worn, the aluminum will  form a dense layer of aluminum oxide, resist corrosion material to prevent further corrosion inside. 
2. Heat resistance: Aluminum zinc alloy steel sheet has excellent heat resistance, can withstand high temperatures over 300 centigrade, and is similar with aluminized steel high temperature oxidation resistance. It often used in chimney pipes, ovens, fluorescent lighting device and the device cover. 
3. Heat reflective: Galvanized steel plate heat-reflective high rate is twice as galvanized steel, often used to make insulation materials. 
4. Economy: Because density of 55% AL-Zn is smaller than the density of Zn, so in the same weight and thickness of Galvanized zinc layer, aluminum-zinc steel plate is larger area more than 3% of galvanized steel sheet. 


Applications of Prepainted Rolled steel Coil for Construction Roofing
1. Construction and building: roofing; ventilating duct; handrail; partition panel;etc.

2. Electric appliance: refrigerator; washing machine; refrigerator; DVD;etc.

3.Transportation: oil tank; road sign; etc.
4.Agriculture:barn; etc.

5.Others:vending machine; game machine; etc.  

prepainted Rolled Steel Coil for Construction Roofing constrution


  prepainted Rolled Steel Coil for Construction Roofing constrution

Specifications of Rolled steel Coil for Construction Roofing 


Prepainted Rolled steel Coil for Construction Roofing

Material Grade

SGCC / SGCH  / DX51D+AZ, etc






Thickness: +/-0.02mm , Width:+/-2mm




Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume


Dried, Chromated, Unoiled


Regular spangle , small spangle, zero spangle



Coil weight

10MT max

Export package

Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed


FAQ of Prepainted Rolled steel Coil for Construction Roofing

We have organized several common questions for our clients,may help you sincerely: 

1. What is the minimum order quantity ?  

Our MOQ is 50mt for each size. And we will consider to give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your offer the better price we can provide. 

2. How long can we receive the product after purchase?

Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-25 days, but the shipment will depend on the vessel situation.

3. How to guarantee the quality of the products?

We have established the international advanced quality management system,every link from raw material to final product we have strict quality test;We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.


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Q:How are steel tape measures installed?
That's the tape measure. There's a small card with no card in the middle of the screw! So it can't be retracted automatically! The solution is to wrap the open tape to the end!
Q:Is stainless steel magnetic?
Is Stainless Steel Magnetic
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Sterling Silver Belly Rings
Q:what is the difference between white steel and blue steel in reference to sushi knives?
Steel Sushi
Q:Is steel industry good for investing currently ?
To be blunt, with the Environmental-Terrorists like Green Peace and The Sierra Club making it basically impossible for Steel Production in the US to be a profitable industry, you are better off investing in Chinese Steel Companies than American. Same goes for Electricity Production and Petroleum Refining... These Environmental Terrorist Organizations and their misguided leftist followers have made it impossible to build new refineries in the US, which is why the price of Diesel Fuel is so much higher than unleaded, which is not only insane since Diesel Fuel actually requires LESS processing to be a viable product but also because our Transportation Industry as a whole relies upon Diesel Fuel to get everything in your home and office from manufacturer to store. By keeping the Energy Industry held hostage to these irresponsible and, to be blunt, insane laws, they have caused a rise in the price of EVERYTHING sold in the United States... From a deck of cards to homes. If we were not basically banned from building new Nuclear Reactors, we could cut our dependance on Coal by at least half... Anything having to do with any industry that could even potentially do with Pollution, regardless of how far advanced the technology has advanced away from that, it is restricted by Eco-Terrorists and mindless sheep that spend too much time listening to propaganda rather than fact checking what their Masters spoon feed them.
Q:how carbon is being alloyed during steel making?
Steel is usually made in a two-step process. As you may know, carbon, in the form of coke, is added to the iron ore during the initial smelting process. This is the first step. The conversion of iron ore into raw iron is accomplished with a blast furnace. Carbon dissolves with the iron during the smelting process. The amount of carbon in the iron is generally not controlled at this point as this would be too difficult, the excess carbon is removed in the next step. The result is pig iron which is crude iron that has a very high carbon content, and a large amount of impurities. Pig iron is almost as brittle as glass, and it is useless in this form. In most modern steelmaking operations, molten pig iron is tapped from the blast furnace three or four times per day- it is not allowed to cool. The liquid pig iron is carried in ladles directly to a Basic Oxygen Furnace which converts the pig iron into steel. The basic oxygen converter uses a stream of pure oxygen to burn off the excess carbon. Impurities are also burned off, particularly phosphorus, silicon, and sulfur (which damage the steel's properties.) These elements all have a much higher affinity for oxygen than iron does, so the iron itself remains unchanged. Once the carbon content and the impurities are reduced to the desired level. The oxygen is shut off, and the iron has now become steel. At this point other alloying elements may be added, such as chromium, manganese, or molybdenum. These elements improve the steel's properties, but also add to it's price. If necessary, more carbon can be added as well if the carbon content has accidentally dropped too low. Finally, molten steel from the basic oxygen furnace is poured off. It can be cast into ingots, billets, or thin slabs.
Q:What is mild steel and what items are made from it?
Mild steel is what your friends get when they see your mom's cleavage.
Q:How much can the metal steel lift?
I think that you failed to put up a meaningful question. I suggest that you try again and seek help.
Q:Are oil and steel monopolistic competition?
While oil and steel may seem to be all the same, they are really not. There are many different grades of crude oil and many different types of steel.
Q:types of stainless steel?
Types of stainless steel There are over 150 grades of stainless steel, of which fifteen are most common. The AISI (American Iron and Steel Institute) defines the following grades among others: - 200 Series—austenitic iron-chromium-nickel-manganese alloys - 300 Series—austenitic iron-chromium-nickel alloys Type 301—highly ductile, for formed products. Also hardens rapidly during mechanical working. Type 303—free machining version of 304 via addition of sulfur Type 304—the most common; the classic 18/8 stainless steel Type 316—Alloy addition of molybdenum to prevent specific forms of corrosion - 400 Series—ferritic and martensitic alloys.

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