Pre-painted Rolled Steel Coil for Construction Roofing

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Structure of Prepainted Rolled steel Coil for Construction Roofing

 Pre-painted Rolled Steel Coil for Construction Roofing

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.  



  Pre-painted Rolled Steel Coil for Construction Roofing

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 do you rate steel?
Its strong steel is rated by the precence of carbon in it. Higher carbon _ higher the price
Q:what is the diiferent in composition between mild steel and cast iron?
I know that mild steel is more brittle than cast iron You know wrong - cast iron is very brittle and mild steel is easy to bend and work. Cast iron is a high carbon product while mild steel is much lower carbon
Q:cleaning a steel pan?
Use a Mr. Clean Magic Erasure. I swear, you will be amazed at how easily it gets your pots and pans clean! It shines them right up! That oil will come right off. Make sure you do wash it with dish soap and warm water after using the Magic Erasure.
Q:Ideas for Fantasy Culture: Steel Making?
Well, steel is just modified iron, so you're going to have to start with acquiring the iron first. For that, you're most likely going to be using some sort of underground mining somewhere - either they do that themselves, or they purchase the iron elsewhere. Assuming you're not dealing with meteoric iron (which is possible, but pretty uncommon), or iron sands (not likely in a woodland area), then unless you're dealing with a rocky outcropping with iron veins out in the open, I'm pretty sure there needs to be somebody doing some digging. That said, it doesn't need to be a full raping of the land scenario. A couple of minor mines, some small-scale smelting operations, and somebody knowing the secret of making steel, and it could give you small amounts of steel without making an ecological disaster.
Q:AR-15 rounds - steel vs. brass?
steel bore - brass copper chrome-lined steel bore - steel is fine. steel jacketed bullets are harder than copper jacketed bullets and would result in higher pressure, more wear in a steel barrel than a chrome-steel barrel. chrome-lined steel is roughly 2X as hard as 4140 steel. even better, nitrated chrome steel is roughly 3-4X harder than 4140 steel. but it s fairly new is a bit pricey. most AR barrels are chrome-lined. you can tell easily if the chamber and bore has a silvery look. regular steel is just black. steel cased rounds are reliable, however plain, uncoated steel cases may feed with some difficulty due to a rougher case finish that results in more friction than the polished, smooth brass cases. cheap ammo (doesn't matter if steel or brass) always shoots more dirty. aside from that I would recommend you try a bit of each of go with whatever shoots most accurate and feeds without problem.
Q:Steel Strings or Nylons?
Kind of a silly question. I use steel strings on my steel string guitars and nylon strings on my classical guitar. It's not something you have any choice in; steel string guitars must use steel strings and classical guitar must use nylon strings.
Q:Are Black Steel and Black Iron the same?
black steel and black tron are not same.
Q:Does Stainless Steel rust?
Theoretically stainless steel is supposed to be what it's name says it is - stainless. However there are different grades of stainless so yours might dis-colour if it's low grade. Think of all the stainless steel cutlery you use to eat with - if you keep it clean it doesn't go rusty ; it can if you don't look after it.
Q:A question about steel?
I think it might be a bit brittle and could break from metal fatigue.
Q:Steel Arch Buildings.....!!?

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