Prepainted Rolled Coil for Construction Roof

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Structure of Prepainted Rolled steel Coil for Construction Roofing

 Prepainted Rolled Coil for Construction Roof

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.  


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 Coil for Construction Roof

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:Stainless steel water bottle, no spout?
Q:What are the uses of Mild Steel?
Mild steel doesn't really mean anything, technically. In today's world all steel is mild steel unless it's high carbon or alloy, which are mostly tool steels. You'll need to study steel much deeper than that to accomplish any real physics work relating to steel.
Q:Heat transfer through steel?
I cant see how you could solve that when you don’t know the type of steel ( specifically). There are many in the range you have stated. Also volume, respecting the length of the tube and coverage of the exterior heat. Logic tells us however 3 seconds is not very long so next you would need to know are the post factor. if the flame was from say a cutting torch and the tube was 20' in length in an ambient exterior temp of 32deg. We could us known a test and determine the rate at which the heat was spread out through the steel. You can also measure pressure in the tube You can find easily resource material on the amount of energy it takes to raise temp by a factor of one. By testing the pressure of a sealed tube of a given length you can apply the solution in scale to your problem. You can also try sticking your finger in it.
Q:List out the Industrial application of Eutectoid Steel.?
Eutectic steel is used to produce pearlite, bainite, spheroidite and martensite steels. Those steels vary in strength, hardness and ductility. One uses martensite steel for example in razor blade manufacturing. Of course there is no end to the various uses of these steels.
Q:Is a ring made of steel good?
Steel rust is brown not green! Very much expected to be of one type of stainless steel, and you should have no problem.
Q:Steel or nylon strings?
Musical type speaks volumes on the subject of this problem. Folks that want high quantity shall be unhappy with unamplified nylon string guitars. From my point of view, the elemental difference between steel and nylon is that this: steel strings ring and nylon strings resonate. The volume produced via steel is quite often a lot bigger than nylon however, to my mind-set, the sound resonance produced with the aid of the wooden of your guitar is essentially masked by steel strings. In case you have a decently made guitar (generally, around a thousand dollars and up), the sound interaction between the wooden and the strings in a nylon guitar is magical across the whole frequency range. With a steel string guitar, the sound produced via the vibrating string overpowers the timber resonance at all but low frequencies. In my view, i'll take a nylon string guitar any day for the sensitivity won from the interplay between timber and vibrating string.
Q:How much is obselete steel worth when sold as scrap?
Q:BB gun lead vs steel.?
steel is made of iron mainly (and carbon) its density is 7.86 g/cm³ approximately. and lead has density=11.4 g/cm³. so, if have same volume and shape steel will have less mass and thus will have greater velocity for same muzzle energy. I agree the manual. for more information on ricochet
ss has to be either welded or brazed you can [solder ] it but it has to be a silver solder, and will not have any strength
Q:Does folding modern steel do anything to enhance a sword?
That's true of Cheness modern metallurgical materials and forge construction. Modern monostone is several times stronger than the steel used in Medieval Europe or Feudal Japan. In Japan it was said that good steel doesn't break when you hit something hard, but folds/bends. That meant good steel as rated back then would take a permanent bend at no more than 15 or 30 degrees of bending. Modern monosteels can be bent 45 degrees without a permanent bend.

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