prepainted rolled Steel Coil for Construction Roofing Constrution

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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:does this density are same for all type of steel? re : 7850kg/cu.m?
90% of the steels used today are plain mild carbon steels consisting of iron with less than 1% carbon content and as such have a density of about 7750 kg/cubic meter. Some special steels which have a significant percentage of alloying elements such as chrome or manganese or other elements will have greater density bringing the steel up to about 8000 kg / cubic meter. There are a greater many factors influencing the exact density of a steel. Even for steels of exactly the same content of iron , carbon and other alloying elements, there may be a difference ( very small mind you ) in density due to work hardening. The difference in this case is due to movement of dislocations which become locked in the grain boundaries and this forms a more dense crystal structure. For this same reason, the theoretical density of steel (which does not take into account dislocations) is greater than the measured density of steel.
Q:Engineering Materials - tool steel question?
It all depends what the application actually is. For hammers I would select a hammer grade B1 steel. For impact loading where an edge is needed I would be going for O1 or similar (oil quenching steels tend to be a little tougher than air hardening). For mining tools a very high manganese steel (Hadfields steel) - this is not a true tool steel. The best place to start is by looking at the ranking of the properties which you want - hardness v toughness v strength - and then use this to put the steels in rank order. Price and availablity then sort the problem out for you (in the real world).
Q:carbon steel?
McMAster-Carr is a good catalog supplier of everything. Shipping for this stuff will be expensive. Talk to steel places near where you live. Carbon steel is not very descriptive. Structural steel is perhaps the most common, it has carbon in it, but people know it as ASTM A36 (36,000 yeild). You might talk to the steel people about your application to see what would be the cheapest for your application.
Q:Pre-engineered Steel Building ........!!?
You just have to do small efforts for owing a steel building: Firstly you have to finalize a steel building company for construction work. After finalizing the steel building company, the next step is the paperwork - the agreements and contracts. Some steel building companies may also ask for a verbal approval for the factories to get the work started.
Q:what is brass and steel used for and why?
By instruments do you mean musical instruments? Brass is used for musical instruments because it's strong but very malleable. It's easy to hammer and roll into sheets, or form into tubes and complex shapes. It's easy to work with using hand tools. It's also very corrosion resistant and polishes very well. It has an attractive gold-like color. It also has some effect on sound, though the shape and design of an instrument is much more important to the sound than the material that's used. Apart from musical instruments, brass is used for items that need to be both durable, easy to manufacture, and resistant to the elements. For example plumbing items like valves and screw couplings.brass is a lot easier to cut with machine tools than steel. It's also traditionally used for hardware on doors and cabinets because of it's color, low friction properties, and corrosion resistance. Brass also is toxic to bacteria, and so brass doorknobs disinfect themselves after about 9 hours. Steel is very strong and very cheap. Steel is basically iron with a small amount of carbon added which makes it much stronger. Iron is the fourth most common element in the earth's crust, after oxygen, silicon, and aluminum. Brass being a mixture (an alloy) of copper and zinc, with other metals sometimes added. Copper and zinc are the 27'th and 26'th most common elements. Therefore, it make sense that brass is much more expensive than steel. Steel is used for too many things to be listed. The use of steel technology has impacts on almost every aspect of modern life. Nearly all of the man-made objects you touch on a regular basis were made using steel tools and steel machinery.
Q:can jb weld fix steel applications?
the stuff is pretty strong... i have a friend who blew a hole in his crankcase of his 07 cr450f and used jb weld on it... added oil and rode on it.. the stuff is crazy strong just give it a day to dry
Q:Galvanised Steel Questions?
Dear HC, You have a great military box and a cool conversation piece. Take a vacuum and clean the dust. Take some 0000 steel wool and use on the steel parts. This will take some elbow grease! If this doesn't work try some 320 grit sand paper. lightly sand the wood and brush polyurethane on everything . The box doesn't pose any health problems. Also you might find that the box will bring a pretty good price if you decide to sell. Good luck. Sniper
Q:will a stainless steel gun rust?
Q: will a stainless steel gun rust? A: Under certain conditions, it can rust. But stainless steel will last longer than blued steel will under such conditions. Also, some parts of a stainless steel revolver might not be stainless steel. The internal parts may be normal steel. Q: I just bought a used Taurus 85 stainless 38 spl revolver, it's about 25 years old but looks like new. This is my first stainless steel gun. I'm wondering if there's any special things I need to be aware of or cleaning methods? A: There are no special methods required. Stainless steel is fairly convenient easy to clean and maintain. Carbon-fouling can still build-up and metal discolorations may occur. These can be cleaned up with cleaning solvents and the use of a Scotch-brite cleaning pad or something similar. If it gets a scratch, the scratch can be polished away or left alone and the scratch can become a badge of honor or something. Q: I have a chrome bore AK, cleaning is always super easy, wondering of cleaning a SS revolver would be the same. A: Stainless steel is pretty tough on its own. Chrome-lining a stainless steel barrel wouldn't be considered cost effective in most circumstances. Cleaning the inside of a stainless steel barrel will be similar to cleaning a blued steel barrel that is not chrome-lined.
Q:how do I convert my house to be built to a steel stud home?
Steel is going to be a whole different world. You will need to go back to square one and get house plans that are drawn for structural steel. First thing you need to do is find a builder that knows how to build with steel and get an idea of the price.
Q:questions about steel barns?

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