Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 10000 m.t./month
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Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability
Brief Introduction
Cold Rolled Steel is steel thathas been worked below its recrystallization temperature by passing it between apair of rollers. Recrystallization temperature is the temperature at whichgrains in the lattice structure of the metal have been rearranged, leaving it freeof strain and deformations. Cold Rolled Steel is pre-treated before being coldrolled with a process known as pickling, which uses strong acids to removescale and other impurities. The Cold Rolled Steel is then passed throughrollers to reduce its thickness. Most cold rolling takes place in multiplepasses and as the size of the Cold Rolled Steel is further reduced, itsstrength and hardness both increase, but its ductility decreases. After coldrolling, heating the metal up in a process known as annealing can restore someof its ductility. The final Cold Rolled Steel may be manufactured in the formof sheets, strips, bars, or other forms.
Application
It’s widely used in outdoor andinterior decoration, furnishing manufacturing, home appliance, automobile etc.
Main Specification
COLD ROLLED STEEL | |
THICKNESS | 0.3-0.5MM |
WIDTH | 600-1250MM |
SHEET LENGTH | 0-6000MM |
COIL ID | 508MM OR 610MM |
SURFACE TREATMENT | MATT FINISH/BRIGHT FINISH, OILED/DRY |
ANNEALING METHODS | BRIGHT ANNEAL/BLACK ANNEAL |
COIL WEIGHT | 1-25MT |
Advantage
1. High Quality SurfaceFinish
2. High Dimensional Precision
3. Excellent mechanicalproperty
FAQ
1.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.
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.
- Q: Well the other day i told my friend that when you put a compass near steel it will screw up and he said only magnets do that then i showed him and it worked then he said: that'ss because steel has its own magnet in it coz it builds up static electricity is that correct what he said? thanks
- If you sprinkle iron filings near a bar magnet (on paper, etc.) the filings will try to line up with the magnetic field (because iron atoms behave like tiny magnets). Bringing the compass near steel (mainly iron with a little carbon) will cause the iron to try to align with the magnet of the compass needle, however, because the needle is free to swing it also aligns with the magnetic field set up between the needle and steel. Any static electricity would have nil effect on the magnetic field.
- Q: I was just thinking, is their a way to make steel qualities inherent in concrete, therefore eliminating the need for re bar?
- There is an iron powder reinforced concrete flooring that improves abrasion resistance. However, you cannot get the tensile strength enhancement that is possible with rebar.
- Q: Does anyone know how to make a steel helmet, or does anyone know where to direct me websites-wise? i've just started looking on the web for info, so when i get back here i might've already found some info, but more wouldn't hurt, especially if from people who are interested on the subject. i know nothing about metallurgy, nothing on the art of metal working etc... please help.
- Steel okorder
- Q: What is the process of pickling and oiling steel coils?
- To ensure the quality and protection of steel coils, a series of steps are undertaken in the process of pickling and oiling. The first step involves pickling, wherein impurities and scale are removed from the surface of the steel coil. This is achieved by immersing the coil in an acid bath, such as hydrochloric acid or sulfuric acid, which effectively dissolves any oxides, rust, or contaminants present on the surface. This step is critical as it readies the steel for further processing and safeguards against potential defects or corrosion. Following pickling, the steel coils are rinsed with water to eliminate any residual acid and then dried. Once they are clean and dry, a layer of oil is applied to provide temporary corrosion protection and lubrication during subsequent handling and transport. The oil coating acts as a barrier, preventing rusting or oxidation before the steel undergoes further processing or is utilized in various applications. The oiling process can be executed through various methods. One common approach is to apply the oil using a roller or brush, ensuring an even coating across the entire surface of the coil. Alternatively, the coils can be passed through a bath or spray chamber where the oil is administered. The choice of oil depends on the specific requirements of the steel and its intended use, with options ranging from mineral oil and synthetic oils to specialized rust-preventive coatings. Once the oiling process is complete, the steel coils are typically stacked, wrapped, or packaged for storage or transportation. It is crucial to handle the coils with care to avoid damaging the oil coating and compromising the corrosion protection it provides. Overall, the pickling and oiling of steel coils are indispensable steps in the steel manufacturing process. They ensure the quality, cleanliness, and protection of the steel, thereby prolonging its lifespan and enhancing its performance in various applications.
- Q: How are steel coils used in the production of steel handles?
- Steel coils are used in the production of steel handles by being processed and shaped into the desired form for the handle. The coils are first uncoiled and then cut into specific lengths. These lengths are then shaped, bent, and welded to create the handle's structure. The steel coils provide the raw material necessary for the production of sturdy and durable steel handles.
- Q: What are the different methods of levelling steel coils?
- Different methods are employed to level steel coils, depending on their specific requirements and applications. Some commonly used methods include: 1. Roller Leveling: This method utilizes a series of rollers to apply pressure on the steel coil, effectively reducing residual stresses and eliminating any waviness or curvature. It is commonly used for achieving high flatness in thinner gauge coils. 2. Stretch Leveling: In this method, the steel coil is stretched beyond its yield point to eliminate shape defects. The coil is subjected to tension in a stretcher leveler machine, which elongates the material and removes inherent stresses. It is often used for achieving greater flatness in thicker gauge coils. 3. Temper Milling: This method involves passing the steel coil through a temper mill equipped with work rolls on top and bottom. The temper mill applies tension to the coil, flattening it and improving its shape and surface quality. It is typically used for higher strength steel grades. 4. Corrective Leveling: When the steel coil exhibits significant shape defects like wavy edges or center buckles, corrective leveling is employed. This method selectively removes material from specific areas of the coil to achieve a flat and uniform surface. Laser or plasma cutting machines are often used for this process. 5. Tension Leveling: Similar to stretch leveling, tension leveling applies tension to the coil without exceeding its yield point. Bridle rolls are used to stretch the material, eliminating internal stresses and leveling the coil. It is commonly used for achieving flatness in higher strength and thinner gauge coils. These methods can be used individually or in combination, depending on the specific requirements and desired end product. Each method has its advantages and limitations, and the choice of leveling method depends on factors such as coil thickness, material properties, and desired flatness.
- Q: In what ways can steel fail in use of buildings ad what can be done to prevent it?
- I am a secretary at a Steel panel making company! But I still can't help you. :(
- Q: so why shouldn't one use a steel cased 223 in an ar15?
- You can. A steel case is cheaper to make than a brass case, resulting in cheaper ammo, in wich they normaly use cheap, corrosive loadings. So steel cased stuff will normally be very dirty to shoot. Clean your gun after shooting and you will be fine. The story of them wearing the extractor is crap, however: the extractor is made of a steel way harder than the cheapo-steel the case is made of. It wonn? scrach it. Even if it would, considering the amount of money you save with the cheap ammo like bear and wolf, changing the extractor once in a while would still be saving you a ton of money.
- Q: So...I'm learning about how steel is made and I'm wondering if there is a more environmentally friendy method. I view it as unfriendly b/c of the oxygen that is injected when the steel is in the blast furnace or electric arc furnace. This oxygen bonds w/ the carbon to produce CO and CO2. THis is necessary to reduce the amount of carbon content to produce harder steels. So what other methods are there that can be used w/o having to end up w/ co and co2? thanks
- From what I understand of it, US steel is better as the steel is more recycled than Canadian, so a lot of that oxygen / CO2 has already taken place compared to working from ore. The second reason US steel is environmentally ahead of Canadian is that US tends to use Electric Arc, while Canadian uses Basic Oxygen, Basic Oxygen uses more energy than electric arc, and I think it also uses more oxygen, but I would suspect that oxygen that it uses is 'waste oxygen' and not converted into Co2 because the Co2 process is limited by the carbon, and steel only has so much carbon.
- Q: What are the different types of steel coil packaging methods?
- There are several different types of steel coil packaging methods, including but not limited to: strapping, wrapping, banding, shrink-wrapping, palletizing, and using steel coil covers or caps. Each method serves a specific purpose and provides varying levels of protection and stability during transportation and storage.
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Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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