Prepainted Rolled steel Coil for Construction roofing use

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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 use

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 use

Prepainted Rolled steel Coil for Construction roofing use

Prepainted Rolled steel Coil for Construction roofing use


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 use

  Prepainted Rolled steel Coil for Construction roofing use

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:What is the difference between weldable steel and plate steel?
Weldable steel is a generic term for steel with low carbon content which makes it easy to weld, form, and machine. If you're looking for a knife blade material, you need either a stainless steel or a high carbon steel which is not at all weldable. The more carbon in steel, the better it responds to heat treatment like hardening, tempering, etc. Plus, the high carbon steel will hold an edge better. Hope this helped.
Q:What is better carbon steel or stainless steel for a knife?
Are you going to use it and take care of it? All butchers use the high carbon steel blades. If you want something to shine real pretty then go with the stainless.
Q:how to wash/clean stainless steel fridge?
Tips For Cleaning Your Stainless Steel No matter if you are in an industrial kitchen or just your household kitchen, maintaining the look and the cleanliness of your stainless is essential. There are plenty of products on the market that claim to be able to help you, but you can also do just as good with just knowing how to handle it. Stainless steel is difficult to clean because streaks and fingerprints show up easily. It is easier to see grime, grease and fingertips on stainless than on windows. To help you to keep your stainless steal countertops, utensils and appliances clean, follow these basic rules of thumb. Much more at web page!!
Q:can my 3 nylon guitar strings be replaced with steel ones?
DO NOT PUT ACOUSTIC (steel) STRINGS ON A CLASSICAL GUITAR. Classical guitars are not built to withstand the tension of steel strings. putting steel strings on a classical guitar can cause irreparable damage to the neck, where the neck joins the body and the heel. Classical guitars have nylon strings. Yes 3 of them look like steel strings, but these are actually metal wrapped around a nylon core. Acoustic guitars are metal strings. The wound strings on an acoustic have a metal string core. Classical guitars tend to have a wider neck and are more for classical music, flamenco, finger picking, etc. Acoustic guitars can have lower tension strings put on them (e.g. martin silk and steel) as the guitar can be adjusted to take the lighter string tension placed on the neck and heel. Martin Silk and Steel Strings can also be put on a classical guitar as they have a lot lower tension than steel and they give a louder more acoustic sound.
Q:What exactly is broken steel in fallout 3 and does the game end if you have broken steel?
you will see the conventional ending on the tip, yet once you have BS downloaded you will awaken to start up a sparkling quest extremely than having the activity in basic terms end. Vault one 0 one won't open back up, you in basic terms get to bypass back for the hassle on the homefront quest. and 3, as quickly as you have BS downloaded the activity will never end
Q:what is 440c stainless steel means?
It is the alloy number given by the American Iron and Steel Institute, or AISI. This is the trade organization of the U.S. steel industry, one of the oldest such organizations. 440C is also known under the UNS system as S44004 440C is a high carbon, plain chromium stainless steel. Or more specifically: 18% Cr, ~1.1% C, ~1.0% Mo, Si, and Mn 440c is mostly used in cutlery, bearings, and valve parts; because it has the best strength and hardness after basic heat treatment of any stainless steel. Relatively poor properties in other areas make it less suitable for other types of items. for example 440c becomes very brittle in sub zero temperatures. 410 is similar to 440, but it is a cheaper milder steel with less chromium and carbon, so it is less brittle, more easily worked and machined, but lacks final strength and hardness. it is often used in cheap stainless fasteners and bushings.
Q:manufacturing process of steel containers?
There are many types of steel containers and many different mnfg processes. There are also thousands of different steel alloys. Steel is used for canned food, compressed air cyclinders, hydraulic pressure vessels, electrical boxes, and many other containers. Steel containers are made out of sheet metal by soldering, brazing, spot welding, seam welding, riveting, bolting, screwing, etc. Heavier wall containers are fabricated of plate steel. Some steel containers are made by deforming the steel by extruding, forging, spin forming, drawing, ironing, etc. Some steel containers are made by machining. You should be able to find plenty of references if you search for these terms. good luck
Q:Is T-304 Stainless Steel dependable?
Surprisingly any stainless steel is considered soft or tough metal. A hardness tester will bare this out. It resists work hardening which means you can bend it many more times than cold rolled or hot rolled steel before it will break. Your choice is a good one for your intended purpose.
Q:Why can hot rolled coils be placed outside?
Because the stress of participation should be eliminated
Q:Prefabricated Steel Buildings.......!?
It really depends upon the environment and the construction techniques used. Steel that is painted or coated will without maintenance eventually rust. I would expect this tendency to be exacerbated in a humid or shore environment. Heat may tend to cook a steel house and the structure does not add much thermal mass. Construction techniques tend to be fairly quick a part of the construction is essentially prefabricated. Work done in a factory will almost always be cheaper than work done in the field, all things being equal. Concrete can be fairly hi tech with lots of equipment or as seen in many parts of the world fairly low tech with lots of laborers. It is easy to change the characteristics of concrete depending upon how it is mixed, reinforced, and treated during the curing process. Because it is applied in a relatively fluid state it can flow around obstructions like bedrock and be formed up into interesting shapes. A concrete structure can be cooler as it provides thermal mass, and a heat sink. It's resulting rigidity may make it more subject to earthquakes than steel. We do really need to be smarter in constructing our homes to make them fit the land and not only the general environment but our particular micro environment.

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