ASTM Prepainted Rolled Steel Coil for Construction Roofing

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Shanghai
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TT OR LC
Min Order Qty:
50 m.t.
Supply Capability:
30000 m.t./month

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Structure of ASTM Prepainted Rolled Steel Coil for Construction Roofing

  ASTM Prepainted Rolled Steel Coil for Construction Roofing

Description of ASTM 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. 

ASTM Prepainted Rolled Steel Coil for Construction Roofing

Main Feature of ASTM 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 ASTM 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.  

 ASTM Prepainted Rolled Steel Coil for Construction Roofing

 

Specifications of Rolled steel Coil for Construction Roofing 

Product

Prepainted Rolled steel Coil for Construction Roofing

Material Grade

SGCC / SGCH  / DX51D+AZ, etc

Thickness

0.2-3.0mm

Width

600-1500mm

Tolerance

Thickness: +/-0.02mm , Width:+/-2mm

Zinc-coating

AZ40-150g/m2

Technique

Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume

Surface

Dried, Chromated, Unoiled

Spangle

Regular spangle , small spangle, zero spangle

ID

508MM

Coil weight

25MT 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 color. And we could give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your can  offer the better price we can provide.

2. How long can we receive the product after purchasing?

Usually within thirty working days after received 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 STELL AND MS STEEL MATERIAL WELDING POSSIBLE OR NOT?
Welding austenitic stainless steels to carbon and low alloy steels are established methods in the process and construction industries. Dissimilar metal welds involving stainless steels can be done using most full fusion weld methods, including TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas). Weld procedures using filler (consumable) enable better control of joint corrosion resistance and mechanical properties. In selecting the weld filler, the joint is considered as being stainless, rather than the carbon steel. Over-alloyed fillers are used to avoid dilution of the alloying elements in the fusion zone of the parent stainless steel.
Q:223 steel cased ammo?
Steel cased ammo doesn't obturate (expand against the chamber walls) when fired as well as brass cased ammo does. This allows carbon to build on the chamber walls. Leading to failure to extract. But if you can get steel cased ammo for cheap, shoot it up! Just have a cleaning rod with when you shoot. If tapping the butt on the ground doesn't dislodge the spent case, push it out with the rod. Be sure to use a chamber brush when you clean your rifle after shooting steel cased ammo. I would never use steel cased ammo for defensive purposes in an AR however. The occasional failures to extract make it a bad idea. It's plinking ammo only.
Q:How can a spider's web be stronger than steel?
Most importantly, spider silk is extremely lightweight: a strand of spider silk long enough to circle the Earth would weigh less than 500 grams (18 oz). Spider silk is also especially ductile, able to stretch up to 140% of its length without breaking. It can hold its strength below −40 °C. This gives it a very high toughness (or work to fracture), which equals that of commercial polyaramid (aromatic nylon) filaments, which themselves are benchmarks of modern polymer fiber technology. What this means in regard to what you have heard is that if you compared the tensile strength (type 'tensile strength' on wikipedia if you do not know what it means) of spider silk and a strand of steel at the same thickness, the silk would have a higher tensile strength than many grades of steel, upto that of high grade steel - of which they are about the same.
Q:Silver OR Steel Jewellery.?
STAINLESS steel is fine. It is the modern alternative. Whether it is seen as a `cheap` necklace depends on the quality of the necklace itself in this case, not what it is made of. At £110 it should be a well-made and a quite original piece. You should have put a link showing it . Stainless steel will not rust, it`s washable, and will keep it shine forever. My own guess (based on the limited info you have supplied) is that it sounds like a very acceptable gift.
Q:how to tell if its really stainless steel?
Mel: okorder.com/
Q:Why are most homes framed of wood rather than steel?
Because it's always been done that way. Never underestimate inertia when asking why new materials/techniques are not adopted. Besides, the cost does not give steel a clear advantage. You can drive a nail anywhere into a stud. With steel, you have to drill your holes precisely.
Q:question about swords steel?
the grade of the sword is one aspect but there's more to it. the quality of the sword itself is a much more important factor a good quality 1045 grade blade can often be much better than a medium quality 1060 or 1095 blade. the quality of the work is much more important than the grade of the steel
Q:Steel Tensile Strength?
I don't follow your calculations. It seems to me that the piece you show could be made from .01 steel and still be less than a pound. Also, it is hard to get steel thinner than .015 because anything thinner is not very useful. If you made it out of .015 steel and used a high strength steel, it might be useful. You wouldn't be bashing any skulls, but with some spikes on the end, it could do some damage, and protect against knives or other hand weapons. You also won't get any bullet resistance out of anything that thin. If you want to bash skulls and deflect bullets, you have to get up to at least .10 and several pounds. Any weight on your hands slows down the speed of your punch, but this is compensated for by the increased energy of impact carried by the extra mass. Also, having something hard to protect your hands allows for harder hits and more damage to the opponent. An interesting idea, but it would take some testing to figure out the optimum configuration. One problem I see is that it completely encloses the hand, making it impossible to use the hand for anything else. So you would have to put it on and take it off a lot, and there would be cases where you wouldn't be able to put it on when you needed it. For that reason, I would not wear two at one time. I would make it heavier and wear it on one hand for bashing skulls and deflecting weapons, and keep the other hand free for other things.
Q:Why should you heat thicker steel before welding?
For most mild steel, it is not necessary to preheat the steel, even in thick sections. Preheating, as well as maintaining interpass temperatures is sometime used when welding high-strength or high-performance steels. This reduces the likelihood of weld cracks. Mild steel is ductile enough that weld cracks aren't usually a problem. Preheating reduces the speed at which the weld cools and solidifies. in high-strength steels, this produces a more ductile microstructure in the weld and heat affected zone, thus reducing the possibility of hot and cold cracks. This also may improve some of the mechanical properties of the H.A.Z., such as impact toughness. The slower cooling rate allows more time for hydrogen to diffuse out of the weld, reducing the potential for hydrogen embrittlement. Hydrogen is produced when water vapor reacts with the steel at high temperatures, producing iron oxide and hydrogen gas. Some steels can be damaged by even relatively small amounts of hydrogen. Electrodes used in flux core arc welding and in shielded metal arc welding often contain fluxes which tend to absorb moisture from the air. Also, rust and mill scale contain water molecules which are chemically bound to the iron atoms. Note that hydrogen embrittlement is generally not an issue with mild steel, due to it's low carbon and alloy content. Preheating also reduces shrinkage stresses, due to the slower cooling rate. This is beneficial in parts which are heavily restrained, or where distortion is a particular concern.
Q:Steel Arch Buildings.....!!?
Typically, okorder.com/

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