Prepainted Rolled Steel Coil for construction Roofing constrution

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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:what coating can be used on steel so it wouldn't rust when exposed to sea water?
Galvinized means steel with a zinc coating. It is the best. For boats at port, and other fixed objects this can be supplimented with cathodic protection, an electrical method that substitutes corrosion of a sacrificial anode for the rusting of the steel. Epoxy and other coatings tend to be very temporary as they wear and scratch with use and lose all effectiveness if they cannot exclude seawater from contacting the bare metal. Zinc responds to abuse and can 'heal' over minor dings. The zinc is refreshed by periodic painting with a high zinc content paint or by electroplating.
Q:Help! About Steel!?
go and search for steel.......
Q:What Products Have Carbon Steel In Them?
there are too many products that have carbon steel in them. just ask yourself whether it rusts, if it does then it has carbon steel. If not then it probably isn't.
Q:Steel Making Process?
From what I understand of it, US steel is better as the steel is more recycled than Canadian, so a lot of that oxygen / CO2 has already taken place compared to working from ore. The second reason US steel is environmentally ahead of Canadian is that US tends to use Electric Arc, while Canadian uses Basic Oxygen, Basic Oxygen uses more energy than electric arc, and I think it also uses more oxygen, but I would suspect that oxygen that it uses is 'waste oxygen' and not converted into Co2 because the Co2 process is limited by the carbon, and steel only has so much carbon.
Q:Anyone else love the TNA Steel Cage? +BQ?
yes it is better now
Q:Bendable steel for crossbow bow.?
So i do know way more about compound bows than I do about crossbows, but i'm going to enterprise an opinion. For my part, i would probably lean toward the compound bow. A part of it's only that i like them higher. However, moreover to that, more often than not when you find yourself hunting you will carry the crossbow loaded, on the grounds that the are typically awkward to load when you have the shot. If you're hunting from a blind or from a tree stand (and might figure out easy methods to load the item whilst you're up there) that's almost always ok. But when you need to tote a crossbow round whilst it's loaded, that may be a bit dicier proposition. Most crossbow safeties are lovely crude making the likelihood of by chance firing one alot bigger than with a rifle. Now, to the plus facet, a crossbow has essentially the entire upside of firing a rifle - best accuracy, same ergonomics, can run a scope on them. Without the downside - no real recoil, no longer too loud and you simply have a lovely excellent trigger on about any of them. Compounds are way more work. Plus it is much tougher to be accurate under stress with a compound than a crossbow. Regarding the protection? Don't particularly find out about that. After I was once doing shooting alot of archery, my 3 - D bow for outdoor stuff was once at ninety two pounds with a fifty five% letoff. My goal bow was once round 60. I had to pretty on the whole take care of string stretch, and tuning with the three - D bow. So i'd expect a crossbow to be in that regional. 5 hours to your nearest Bass pro? Good for a crossbow perhaps it's valued at it because no longer too many places raise them. Nonetheless, should you do back to a compound bow it appears rough to feel that would be your nearest archery professional shop. Thinkingblade
Q:Where can I find an atomic structure of carbon steel?
Carbon steel is a polycrystalline substance containing several compounds. Most of it is iron, but there are crystals of austenite and martensite present, plus other iron carbides. Each of these has a different atomic structure. The properties of the steel depend not so much on the atomic structures of the compounds, but more on the size and abundance of the crystals. The function of these crystals is to impede the movements of dislocations through the iron.
Q:Why was there molten steel at Ground Zero?
that's just it: there wasn't very much molten steel for the very reason you point out. Jet fuel burns at 800° to 1500°F. This is not hot enough to melt structural steel. However, engineers say that for the World Trade Center towers to collapse, their steel frames didn't need to melt, they just had to lose some of their structural strength. Steel will lose about half its strength at 1,200 degrees F. The steel will also become distorted when heat is not a uniform temperature. after the collapse, a LOT of folks took a look at the remains. the result was the conclusion that the fire caused the central core of the building to weaken. When the floors collapsed one on top of the other, the weight was too much for the weaked core to bear, causing the result we are all familiar with. hope this helps
Q:how is structural steel cut?
Yes, you can use a Sawzall. A ban saw or a cutting torch work too. But a cutting torch woudl leave a pretty rough edge.
Q:Galvanized Steel Poisoning?
Galvanized Poisoning

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