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:How are steel coils labeled for identification?: Steel coils are typically labeled for identification using a combination of unique alphanumeric codes, barcodes, or labels that include important information such as the coil's dimensions, weight, grade, production date, and supplier details.

Q:Myself, iam Working In a Steel Fabrication Company. I completed my Engineering in 2006 and immediately recruited in this company in Oman. My company is Steel Fabrication company .So as i am new to this field, i just need some basic knowledge regarding this Steel Fabrication.Waiting for ur early reply.: Steel fabrication involves the joining together of different types and sizes of steel members e.g when you are constructing a truss. This will include welding or bolting together those members as specificified on engineering drawings though sometimes you have to design/provide a suitable connection yourself. You have to ensure that all connections are adequate/ will not fail in service. You will also have to produce steel fabrication drawings showing various details and these you will send to the design engineer for his approval before you commence the actual fabrication.

Q:Hi all.I'm working on a project which requires about 3 steel pipes at 25mm in diametre and about a foot each in length.The qualities I need with the steel is that:1. I need it to be easy enough to weld together2. I need to be able to drill holes through them with a basic drill (I could buy different bits, that's fine)3. I need the steel to be able to take short intense repeated bursts of strain through said holes4. The lighter the steel the better5. Could I please have a ballpark figure for price. I can't imagine such a small amount of steel would cost too muchThank you in advance for your replyRegardsSean: Call the steel pipe company or check their website

Q:I'm going to buy a guitar for beginners and i wondered what strings are better steel or nylon?: It okorder /

Q:What are common uses for steel coils?: Steel coils are commonly used in various industries such as automotive, construction, and manufacturing for applications like sheet metal fabrication, structural components, pipes, and electrical appliances.

Q:How do steel coils contribute to fire resistance in buildings?: Steel coils contribute to fire resistance in buildings by providing structural integrity and stability. The use of steel coils in construction helps in preventing the collapse of buildings during a fire. Steel, being a non-combustible material, does not contribute to the spread of fire, allowing occupants more time to evacuate safely. Moreover, steel coils have high melting points, which means they can withstand intense heat for a longer duration before losing their strength. This property helps in slowing down the fire's progression and gives firefighters more time to control the blaze.

Q:i have purchased a high dollar Martin guitar and i was wondering if there are many people out there that have used steel string acoustics for classical and flamenco guitar playing.otherwise i will need a nylon stringeror.. uld i put nylon strings on an old yamaha steel string guitar that i have?: Guitars built for either nylon or steel strings are constructed differently. You will have problems putting nylon strings on a steel stringed guitar and visa verse. I say NEITHER is a good idea. If I were in your shoes, I would walk on line or to a guitar store and purchase a nylon stringed guitar. That's what I did years ago and now I am hooked. I got a second hand Takamine A/E that work just fine for a couple hundred and then just a yr or so ago I got a brand new one, an EC132C and I just LOVE it. As my skills improve I plan on upgrading to a custom built acoustic only with a cutaway. I like cutaways but not the electronics. I never plug into my amp hardly at all. Yamaha makes nylon guitars too VERY cheap and real good tonal quality, I was VERY impressed with one that I played. I upgraded my tuners on my new Takamine to Schaller 16:1 and put the old Takamine tuners on that Yamaha and it's a really nice little guitar to kick around on when I am at that person's place.

Q:What are the common coil defects and their causes?: Some common coil defects include edge wave, center buckle, oil canning, and coil breaks. These defects can occur due to various causes such as improper tension during the coiling process, uneven cooling, material defects, or inadequate lubrication.

Q:What are the different methods of coil slitting for steel coils?: There exists a variety of techniques for coil slitting steel coils, each serving a specific purpose and employed in various industries. Here are several commonly used methods: 1. The most widely employed technique for coil slitting is rotary shear slitting. It entails the utilization of rotating knives to divide the steel coil into smaller strips. Renowned for its speed and precision, rotary shear slitting is ideal for large-scale production. 2. Loop slitting involves feeding the steel coil through a loop control system that maintains constant tension. Subsequently, a rotating knife is used to cut the coil into strips. Loop slitting is often utilized for thinner gauge materials due to its ability to produce clean, burr-free edges. 3. Oscillating shear slitting employs oscillating knives to cut the steel coil. These knives move back and forth rapidly, creating a shearing effect that facilitates cutting through the coil. This technique is commonly used for thicker gauge materials and can handle higher tensile strengths. 4. Crush cut slitting involves pressing a circular blade against the steel coil to cut it. The blade crushes the material, resulting in a cut. This method is frequently used for softer materials or when edge quality is not of utmost importance. 5. Slit edge rolling is a technique that involves rolling the edges of the steel coil after it has been slit. This process smooths out the edges and enhances the appearance of the strips. Slit edge rolling is often employed in applications that require a high-quality finish. 6. Laser slitting is a relatively new method that utilizes a laser beam to cut through the steel coil. This technique offers precision and can handle a wide range of thicknesses. Laser slitting is commonly used in high-precision applications where edge quality is crucial. These represent just a few of the various coil slitting methods for steel coils. The selection of a method depends on factors such as material thickness and tensile strength, desired edge quality, and the intended application of the slit strips.

Q:How can I tell the wear resistance, strength, ect from the name of the steel?how could I tell the difference between 420 and 440 steel. what does the HC in 420 HC steel mean? what do the numbers and letters in s30v steel mean?: If your question implies how to tell the differences just by looking at the actual knife then I'd say there is no real way to do that. Just about all high carbon steel's look alike. You should be able to tell the difference between a stainless steel, but which one is anybodies guess, and a carbon steel however.

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