Cold Rolled Steel/Black Steel Rolled different size

Cold Rolled Steel/Black Steel Rolled different size System 1

Cold Rolled Steel/Black Steel Rolled different size

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 9000 m.t./month

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Product Description

Brief Introduction
The 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. The 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 may be manufactured in the form of sheets, strips, bars, or other forms.

Specification
1. Thickness: 0.4-2.0mm
2. Width: 900-1250mm
3. Inner Diameter: 508mm
4. Weight of Steel Coil: 3-15MT
5. Heat Treatment: Annealed
6. Margin Status: EC & EM
7. Surface Quality: FB&FC
8. Surface Status: SB & SD
9. Surface Treatment: Oiling

Mechanical Properties
1. Yield Strength: ≤ 320MPa
2. Tensile Strength: ≤ 370MPa
3. Elongation (L=50mm, b=25mm) When:
(1) Nominal Thickness <0.25mm: 30%
(2) Nominal Thickness 0.25mm-<0.40: 32%
(3) Nominal Thickness 0.40-<0.60mm: 34%
(4) Nominal Thickness 0.60-<1.0mm: 36%
(5) Nominal Thickness 1.0-<1.6mm: 37%
(6) Nominal Thickness >1.6mm: 38%

Packing
We use Seaworthy Package to make sure Cold Rolled Steel is well-protected during the long ocean voyage.

Application
1. Base metal for coated and dipped products.
2. Home appliance
3. Precise welding tube
4. Flux cored welding wire
5. Bicycle, battery shell,
6. Automobile fitting, hardware
7. Enameling industry etc.

Superiority
1. High precision of dimensional tolerance
2. Excellent mechanical property such as the yield strength and tensile strength, etc.
3. Being highly resistant to denting
4. Exhibits useful magnetic properties
5. High quality surface finish and get well prepared for the surface coating
6. Available in a variety of sizes and shapes with characteristics useful in a wide range of applications

Chemical Components

Grade	Chemical Components
Grade	C	Mn	P	S	Alt
DC01	≤0.12	≤0.50	≤0.035	≤0.025	≥0.020
DC03	≤0.10	≤0.45	≤0.030	≤0.025	≥0.020
DC04	≤0.08	≤0.40	≤0.025	≤0.020	≥0.020

Cold Rolled Steel/Black Steel Rolled different size

FAQ

1. Do you have QC team?
Yeah, sure, our QC team is very important, they will keep the quality control for our products.for quality inspection every day.

Q:Hello people.Me and the life mate have been working on a fantasy book together and we are currently in the process of outlining the cultures. The culture of our antagonists' is a sort of woodland tribal/celtic[ish] deal and they are very nature oriented. Being a detail freak and wanting to have some real world credibility in the story, I am trying to decide how they produce steel. I want steel to be an important part of the culture, but a thing that is in limited supply. I also do not want there to be a large amount of resources committeded to mining or processing iron ore for steel. So does anyone have any real world ideas explaining how the people can produce steel without using underground mining operations, large processing facilities, and without raping the land?All help and ideas are appreciated: 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:I have to explain some functions of stainless steel but after days of searching I cant find an answer. Thankyou in advance for your help :): IT doesn't rust.

Q:Personally, I like Steel Cage matches to end in pinfalls. One of the biggest selling points of a Cage match is that it is to keep the competitors in and keep others out; essentially ensuring that it's a 1 on 1 match. As a result, I believe that pinfalls or submissions are important - but I know there's a lot of people that believe cage matches should only end in escape. What do you think??: I don't really care either way. The only way I don't like it to end is when the door is opened and the person just walks out. That really isn't hard to win it like that. For last night I was hoping before the match that Bryan would win by escaping the cage. It fit his character, being a coward champ.

Q:why does steel have a density range when other metals do not?: Steel is not a pure element it is an alloy. Steel is primarily iron but it has many elements blended in that change it's density including carbon,silicon, nickel, chrome, etc. Aluminum and copper , magnesium and so forth can be the pure element or they can be alloys too. If they are alloys, then their densities vary also

Q:When I took guitar lessons, I found that the Nylon strings are easier for me, but I love the sound of steel strings. Now, I have my own acoustic guitar, and 2 strings broke off, so I'm getting strings today. I'm not sure if Nylon strings would 'fit' on my guitar, and it's to soft of a noise. But the steel are much better sounding, but it's a little bit harder to push the string down on the fret. Which do you prefer, why?(:: classical guitar = nylon strings Acoustic/electric = steel strings Firstly i must explain you that fingerstyle playing on guitar is using your nails to play and not the soft spot on the acre of your fingers... Why? Because nails produce a cleaner, better and louder sound while the soft spot Is sloppy and dusty... (very simplistic)The difference with using a pick is that you can use your fingers as 4 different picks instead the one you are using when playing with a pick... Well the reason is that nylon strings aren't supposed to be played with a pick but with fingers (nails in reality as mentioned already) if you want το keep them in good condition for long(the sound they provide is another thing and it's a matter of taste) Steel strings are better for using with a pick... Probably a classical guitarist would easily break or harm his nails while playing on steel strings.... Personaly i like both... Depends on what playing

Q:I have a Nike SQ Sumo 21 degree and it is a steel shaft. I hit the ball very high with this club and I lose distance. I don't hit any of my other clubs high it's just this one. Is it because of the steel shaft or is it the club? Help please.: Actually it isnt so much whether its steel or graphite, although in the past steel was stiffer as a rule. Today many graphite shafts (depending on the shaft manufacturer) are in fact stiffer then some steel shafts. IE proforce XS vs true temper R You also have to look at the kick point in the shaft. The kick point is where the shaft bends at moment of impact. My shafts are tipped lower because I custom made them that way because I typically hit the ball low to begin with. High kick point means lower ball flight and lower means a higher flight. Also different brands have different stiffness' some regular shafts you'll find feel stiffer then other stiff shafts. the only way to tell if its the shaft is to have all the same shafts installed with the same kickpoint hope this helps

Q:How do steel coils contribute to energy efficiency in transportation?: Steel coils contribute to energy efficiency in transportation in several ways. Firstly, steel coils are lightweight and have a high strength-to-weight ratio. This means that less steel material is required to carry the same load compared to other materials, such as wood or concrete. As a result, the overall weight of the transport vehicle is reduced, which leads to lower fuel consumption and emissions. Secondly, steel coils are highly durable and can withstand harsh conditions during transportation. They have excellent resistance to corrosion, impact, and fatigue, ensuring a longer lifespan for the transport vehicle. This durability reduces the need for frequent repairs or replacements, resulting in reduced energy consumption and material waste. Furthermore, steel coils are easy to handle and transport. They can be easily loaded and unloaded from trucks, trains, or ships due to their compact and standardized size. This efficiency in handling reduces the time and energy required for loading and unloading operations, thereby increasing overall transportation efficiency. Additionally, steel coils can be efficiently stacked and stored, maximizing the use of available space in transport vehicles. This reduces the number of trips required to transport the same amount of goods, resulting in less energy consumption and lower transportation costs. Lastly, steel is a highly recyclable material. At the end of their life cycle, steel coils can be easily recycled and used to produce new steel products. This reduces the demand for raw materials and the energy required for manufacturing new products, contributing to overall energy efficiency in transportation. In conclusion, steel coils contribute to energy efficiency in transportation through their lightweight, durable, easy-to-handle, and recyclable nature. These characteristics result in reduced fuel consumption, lower emissions, decreased maintenance needs, efficient use of space, and reduced material waste, all leading to a more sustainable and energy-efficient transportation system.

Q:A roll of 1 meters wide color steel roll about how many tons?: In general, between 3.5 and 5 tons. Our company uses 0.17*1000 white color steel roll. The weight is usually around 4.5 tons. Different manufacturers will have different sealing rolls.

Q:How does adding carbon to Iron make it stronger? How does steel look the molecular structure in comparison to Iron? looking for a very scientific answer =]: Cast Iron' is typically brittle, while 'Maleable Iron' has a small percentage of carbon which allows it to be hammered and formed. Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron. Steel is a crystalline structure of iron molecules interspersed with carbon molecules. This is properly known as cementite. The hardness and malleability of steel depends not only on the carbon content, but on how the carbon and iron molecules are arranged to one another. Internal stresses in the steel's crystalline structure will increase or decrease depending on the temperature it is subjected to and the rate at which molten steel is cooled. This 'tempering' can increase the strength of the steel at the expense of brittleness.

Q:Why is it usually scorned by the shooting community to use steel cased ammo (like Wolf)? Always hear corrosive and steel is bad for the extractor/firing pin. Hulp a simpleton out!: I okorder /

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