Prepainted Rolled Steel coil for Construction Roofing constrution

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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 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 

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

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:Engineering Materials - tool steel question?
It all depends what the application actually is. For hammers I would select a hammer grade B1 steel. For impact loading where an edge is needed I would be going for O1 or similar (oil quenching steels tend to be a little tougher than air hardening). For mining tools a very high manganese steel (Hadfields steel) - this is not a true tool steel. The best place to start is by looking at the ranking of the properties which you want - hardness v toughness v strength - and then use this to put the steels in rank order. Price and availablity then sort the problem out for you (in the real world).
Q:Why is brass ammo considered superior to steel cased ammo?
Ok folks, BOTH Brass and Steel work harden. That's what happens when you get into the plastic deformation part of the stress - strain curve. In the case of brass it can take significantly more deformation before it hardens than steel, steel can take significantly more stress before it goes into plastic deformation. Steel is unattractive in plastic strain environments because it has an unstable plastic deformation region before it stress hardens. Brass has much smoother performance. I don't know a heck of alot about making casings, but certainly for necked casings steel will wear out tooling much faster than brass. In a straight wall case it probably doesn't matter as much since it is just tubing. Typical Brass has a brinnell hardness of around 60, mild steel around 130. Steel is a LOT harder than Brass. Thinkingblade
Q:Can steel oxidize?????????
Yes - Steel can oxidize, its most commonly called rust Steel is a metal. Depending on the level of oxidation, you might be able to polish it with very fine steel wool. If is is really bad, then you might need a chemical cleaner such as Naval Jelly, which can be found at the hardware store. But the Naval Jelly might discolor the metal, so then you might need to polish it afterward to return its finish.
Q:Magnet will not stick to stainless steel?
That's interesting that it caused deflection in the compass. A lot of stainless steels may be SLIGHTLY magnetic, because they have small amounts of ferrite or alpha-iron in them. Ferrite is one of the crystal phases of steel. It has a body-centered cubic (BCC) structure and it's responsible for the magnetism of ordinary steels. Adding certain elements like nickel, manganese, or molybdenum, changes the crystal structure of the steel to a face-centered cubic (FCC) structure, which is NOT magnetic. This crystal phase is known as Austenite or gamma-iron. However most iron alloys contain some impurities that may cause the steel to be not completely transformed into the FCC austenite phase, small areas remain as ferrite.
Q:Is Grade A Surgical Steel...?
Well a lot of people get microdermals done with surgical steel,yes titanium if better but it can be done with surgical steel.If you want the titanium you can always ask the piercer where they get their jewelery and if they could order them for you.You could also go to a different shop and ask if they have titanium dermals you should be able to buy them off of them.If hes an expensive piercer and your paying a lot for them you should be able to get the ones YOU want.Its YOUR body not theirs. =] hope this helped.
Q:why do you heat steel when hardening?
Gary is right, but maybe I can simplify it. It's very complex..... When you heat (hardenable) steel the carbon and iron form crystalline structures. Martensite and Austenite are most prominent, but there are others. Those are the hard crystals. When you quench it, those structures don't have time to dissolve as they would with slow cooling, so you freeze the crystalline structure in that state. Since that is too hard for most things, you temper it. Heating to a certain temp lets ~some~ of the crystals dissolve away. Annealing is heating and letting it cool slowly, so those structures will break up back into carbon and iron, leaving the steel soft. It's like a little atomic machine - crystals form, dissolve away, form again, with heat. It's waaaaay deeper than just that in detail, but that's the gist of it.
Q:How does water cooling affect the hardness of steel?
When steel is slowly cooled, lots of carbon diffusion takes place because it is not very soluble in steel at room temperature. The carbon is in solution at high temperatures, and is rejected out of the lattice as it cools. And when this happens, the microstructure will consist of ferrite and pearlite, and the lattice structure will be base centered cubic (bcc). If it is cooled fast enough, then the carbon gets trapped in the interstitial sites of the lattice and distorts it to a body centered tetragonal (same as bcc, but elongated in one direction) This elongation strains the lattice and makes it harder. Also, when cooled fast enough the atoms do not have time to diffuse like they normally would and they shear into place. This forms the hard phase of martensite that is desired of heat treated steel. But then it must be tempered back some because it is too brittle.
Q:how do you get broken steel?
P.G.A/A. (Professional Gamer Advice/Answer) First off, what you need to know is Broken Steel is an expansion pack (to a certain extent). What you need to do is first download the content to the device that holds your Fallout 3 save files, be it PC or 360, and then you must simply complete Project Purity by choking to death... Or, if you have already done this and saved, then simply load up your game. You will know it's beginning when the old coot that leads the Brotherhood of Steel tells you that they have brought you Back from the dead. From there, you go on all sorts of wacky and explosion-filled adventures. There is even another segment with everyone's favorite patriotic technological warfare robot, Liberty Prime! And oh MAN is that part fun. As well, there are tons of new weapons, armors, and even the ability to (for a limited time) tame death-claws! But DO be careful, because they explode quite easily...there is also the Outcast Armor, which in my opinion is the most bad-*** because it is black armor with a red trim rather than a silver armor with a bluish-silver trim.
Q:How to solve steel plate storage
According to the principle of "first in first out" to carry out the turnover, organize the logistics, reduce the large amount of moving plate, reasonable arrangement, easy to steel coil into the use of state.
Q:If you combine stainless steel with gold, does that make stainless gold?
Stainless steel, I believe, was an actual trade name of a british cutlery company's knives, once the ability to create iron-chromium alloys was mastered. Stainless steel's main alloying agent that prevents it from rusting, is Chromium. The Chromium in the steel creates an protective layer (not unlike rust), which acts as a protectant for the rust-prone iron...keeping real rust away. I am no metallurgist, but I have not heard of gold being used as an alloying agent in common steels. I'm not even sure they would mix. Not all metals can be stirred together successfully. Even if gold could be used as an alloying agent for steel, it would need to be in such a small percentage, you would not end up with a metal that was gold in appearance...so it would still look like steel of some sort. The funny part is, gold is already stainless, and does not tarnish or rust as it is.

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