prepainted Rolled Steel Coil for construction Roofing Constrution

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50 m.t.
Supply Capability:
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 much does stainless steel cost? Per lb?
Sheet stainless steel is about $2.00 to $2.75 per lb. in the US right now for a 2B stainless steel without any special finish. The cost of a sink or counter is going to vary widely. The labor to fabricate it is going to be a lot higher than the material cost so the price per pound is not going to tell you much. In California a custom 6' counter would be somewhere between $1,200 and $3,000. A standard size single compartment sink would be about half of that.
Q:why does steel have a density range when other metals do not?
Steel is not a pure element it is an alloy. Steel is primarily iron but it has many elements blended in that change it's density including carbon,silicon, nickel, chrome, etc. Aluminum and copper , magnesium and so forth can be the pure element or they can be alloys too. If they are alloys, then their densities vary also
Coat it in molten plastic, or use stainlessteel
Q:EDC Knife (Cold Steel 4 inch Zytel Ti-Lite)?
Q:What sort of Steel should I use?
Sprinkler pipe or black pipe. Designed for fire suppression systems, it is often used for coping on skateboard and BMX fixtures. Not sure of the price, you could probably pick up some scrap from a plumbing supply house or a sprinkler installer. Can't imagine the cost to be more than $10
Q:Starting a steel mill?
Typically, steel mills are worth $20 million to $200 million and are owned by large corporations. Your best bet to own one would be to take over a corporation that already has one. That way you have all the supply lines, customers, experts and other workers already there, too. Stick with investing in going concerns, so you don't need to be an expert in each business to build it up. Get them ready made, learn the details from the people already doing it, then work out ways to improve it. Do not get tempted to borrow even 10c from the scammers who have answered your question. Start saving your real money, reading the financial news, and making small real investments in real stocks.
Q:Coating on Steel Wool?
It will be very effective if you remove the oil by appling protective polymer spin coating to the edge, top and underside of the wafer, which makes those surfaces impervious to most chemical etchants. To learn more about the spin coating theory you may check out the following source.
Q:Does folding modern steel do anything to enhance a sword?
Folding Sword
Q:Which bunkbed is more sturdy: Wood or Metal/Steel?
Metal, the screws can loosen, but most of the joints in a metal bed are welded, and screws that work loose are easy to tighten, once a screw or glued joint comes loose in a wood bed it will never be the same. The metal bunkbed my daughter had only needed screws to keep the upper safety rail from wobbling, but without any screws it would still stay together.
Q:What is the Rockwell (HRC) Indentation Hardness of Steel?
There is no average, it depends on the type of steel (hundreds) and the (heat/surface) treatment (infinite possibilities). The Rockwell hardness range covers a large scale so for any given range there is a suffix (C is used for most steel) to denote the selected range. The number is a dimensionless constant that correlates to the strength of the material. Materials can also be surface (case) hardened and then the bulk material will be soft and the surface will be hard, this is typical for items like gears and cams that have rolling wear but are not very heavily stressed to require bulk hardness. Most steel that is hardened is first machined to size and then hardened. If more accuracy is required, they are machined to just over net size, hardened and then ground to the final size as the heat treatment can change the size and shape a little as stresses are released. Some examples: Very hard steel (e.g. a higher quality knife blade): HRC 55–66 Axes, chisels, etc.: HRC 40–45 4140 Cr Mb Steel HRC 28 - 36 , bulk hardened to HRC 54, Nitride case hardened to HRC 60 P20 tool steel can be bulk hardened to over HRC 55 and then tempered down from HRC 51 to 28

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