Cold Rolled Steel (DC01) for Building Material

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25 m.t.
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10000 m.t./month

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Product Description:

Basic Info.

Model NO.:Dc01

Technique:Cold Rolled


Steel Grade:DC01

Export Markets:Global

Additional Info.


Packing:Standard Seaworthy Packing, Bundle or Pallet



HS Code:72099000

Product Description

1.Surface : General, Bright, Dull and Mirror finish, oiled or unoiled
2.Thickness: 0.1mm-3.5mm
3. Width:1000mm,1250mm, special width
4. Provide original mill test certificate and original production certificate of these standards
5. Coil ID: 508mm. 610mm
6. Coil weight: 4-15MT as per client's requirement
7.  Trade term: FOB/ CIF/ CFR

8.Application:Construction filed, shiping building industry, petroleum&cheical industry, war and electricity industries, food processing and medical industry, boiler heat exchanger, machinery and hardware fileds.

Cold Rolled Steel is steel that has been worked below its recrystallization temperature by passing it between a pair of rollers. Recrystallization temperature is the temperature at which grains in the lattice structure of the metal have been rearranged, leaving it free of strain and deformations. Cold Rolled Steel is pre-treated before being cold rolled with a process known as pickling, which uses strong acids to remove scale and other impurities. The Cold Rolled Steel is then passed through rollers to reduce its thickness. Most cold rolling takes place in multiple passes and as the size of the Cold Rolled Steel is further reduced, its strength and hardness both increase, but its ductility decreases. After cold rolling, heating the metal up in a process known as annealing can restore some of its ductility. The final Cold Rolled Steel coil may be manufactured in the form of sheets, strips, bars, or other forms

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Q:Buoyancy question. Why does a steel nail sinks but a steel ship floats.?
surface area of the ship against the water is much greater than the nail.
Q:Damascus steel sword question?
There are many makers that use blue on there Damascus. My question, what the heck are you wanting to mess with the finish for? If you had a true Damascus blade made that that thing cost a fortune, and I don't mean under a grand either. Then there is the question of what it is made from, some steel combinations react well to the gun blue, others not so much. If it is a stainless blade it won't work at all and you shouldn't be using it either. I can tell you, my Damascus blades start at $100 for a small cable knife and go up from there. If you wanted a sword it would push 10 g's easy. None of my customers would mess with the finish, most would cry if it got scratched. If it's has a pretty pattern don't mess with it.
Q:911 conspiacy theorists. Can fire melt steel?
They can't melt that fast At that temperature, the fire caused by the jet's fuel didn't hot enough to melt the concrete steel. As you see in the video the flame took only 20 minutes. The heat is not fast enough to penetrate all fragment of the concrete steel from top to the foundation, steel is not a good heat conductor like the iron. The explosion only took 5 stories, even all flame in all stories will take 4 hours to melt the core - in this case the core is the worst quality alloy which I don't think is used by WTC. The speed of the falling of WTC building was way too fast. It only took about 9.5 seconds. As an illustration, we throw an object - no matter the weight from the top of WTC, let's count how long it takes from the top to the ground as easy as senior high physics. We took the height of as h = 526.3 m, the gravity 9.8 m/s^2 then apply them to the Newton's equations, h = 1/2*g*t^2 then t = sqrt(2*h/g) = sqrt(526.3/9.8) = 7.32 seconds. The difference is just 2.2 seconds. The resistance of the concrete and solid materials should give at least 200% of the fall duration. WTC's 9.5 secs to fall is even faster a ball sliding on its wall from top the ground. I don't know what happened there. But my Basic Physics lecturer at first grade in my college -who concentrates in Materials- said that it is very odd that the flame burning 5 stories (at most 2% of 110 stories WTC) took only 20 minutes to melt the core of 30% after explosion top stories' core. A friend of mine, got summa cumlaude Bsc in civil engineering - concentrated in structure, said that the pan cake fall has never occured before due to fire causes. If the heat is hot enough to melt the core then the building should bend forward at a broad angle because the strain caused by the heat is not uniformly distributed along the building's core - remember steel is not a good heat conductor. I'm not speculatiing, but 9/11 is an odd tragedy
Q:how to make a steel helmet?
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:Which is more reactive? Zinc or Steel?
Zinc. Steel is an alloy consisting mostly out of iron, In the reactivity seris, zinc is more reactive than iron. Therefore, zinc is more reactive than steel
Q:Stainless Steel Used In Knifes?
If your talking about a folding pocket knife, I think that it's basically six one way and a half dozen the other. I actually do prefer stainless for my pocket knives. I don't want to oil a knife to the degree I feel carbon requires, only to then stick it my pocket to attract dirt to the knife and oil to my pants. I'm the exact opposite on sheath knives though. I like 1095 carbon steel, plain edge sheath knives. I'll thrash on them HARD, and I rarely have major edge problems. Of course, I require them to be coated with some kind of powder coat or the like, because they can rust, but I do try and keep them clean and dry when in the sheath, so they won't pit the uncoated edge. My reasons for this sheath knife preference is multi-fold. First, these knives are simply affordable. I don't spend $80 dollars on a outdoors sheath knife. I use the tool too hard to want to spend more. I don't like the more traditional stainless steels such as AUS-8, 420HC, and 440C (not to mention the HORRENDOUS 440A) because I feel that the all else being equal, a stainless blade will bend before a carbon blade will break. I also think that carbon holds an edge at least as well, if not better, than traditional stainless, and it's much easier to hone. I don't know much about these new laminates, other than the very hard, but not so tough. They seem to be POSSIBLY too brittle for my use. That, combined with the fact that they cost a FORTUNE, means that I just won't be considering them.
Q:how to tell if its really stainless steel?
Some types of stainless are magnetic and some are not. being magnetic isn't a reliable way to tell the difference. In fact, only the cheapest pots would be made out of grades of stainless that are magnetic. Stainless pots/pans are generally made of non-magnetic types, but then again, aluminum isn't magnetic either. Aluminum and stainless are superficially very similar.
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:Is diamond lighter than steel?
Diamond has half the density of steel but would make a terrible sword because it is not very tough. Toughness is a material's ability to resist breakage from forceful impact: Diamond has a toughness of 2.0 MPa·m1/2 and has a critical stress intensity factor of 3.4 MN·m−3/2. That makes it tough for a gem but are poor compared with steels. Plus diamond has a cleavage plane.

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