Chinese Best Cold Rolled Steel Coil--Any type in Good Quality
- 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--Any type in Good Quality
1.Structure Description:
The raw material of cold rolled steel coil/sheet is high quality hot rolled product, and after pickling continuous rolling, degreasing, annealing,skin pass,slitting and cut to length line etc. Along with it many kinds of new technology and new process of global cold rolling production have been applied. Therefore the quality of the goods could be guaranteed.
2.Main Features of the Cold Rolled Steel:
• Excellent process capability
• Smooth and flat surface
• Workability, durability
• High strength
• Good visual effect
3. Cold Rolled Steel Images
4.Cold Rolled Steel Specification
Standard:AISI,ASTM,DIN,GB,JIS,JIS G3302 ASTM 653M EN10142
Grade: Q195~Q345
Thickness: 0.16mm~2.0mm
Width: 1250mm MAX
Coil weight:3-12 MT
5. FAQ of Cold Rolled Steel
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;
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:I need a machine which can produce steel pipes, but I don't know where to look...If you want me to state dimensions etc. just say...Thanks :)
- I'll answer both those questions. Your first question is: Who can I buy a Steel Pipe Making Machine? To which I reply: anyone. I'd put great consideration on the age of the person you are giving this machine to, and perhaps their physical ability. Cripples don't work well with steel pipes. Unless you are...beating them with one. Second question is: Where can I buy a Steel Pipe Making Machine? My reply: OKorder, or Steel Pipe Makers Incorporated. You could probably just steal one out of their factories. They have billions, and the actual machines are no bigger than...a bus or two. Just pop one in your backpack on the way out. But honestly, I don't know where to get a steel pipe making machine. BUT! I do know where to get a steel pipe making machine making machine. Ask santa. (BTW: Why do you need the steel pipes? I smell conspiracy!)
- Q:I understand that Stainless Steel is a low carbon steel having minimum 10.5% chromium content in it there r 60 different type of stainless steel. Kindly informa) Is this info correct?????b) Which stainless steel can get rusted or can have superficial rust????
- Stainless steel is a generic term for a whole range (there are more than 60 types) of Fe-Cr alloys. They all contain some amount of C and some alloys include a good number of other alloying elements. In almost all cases, the materials have corrosion resistance due the Cr atoms that are in solid solution with the Fe matrix. Under corrosive conditions, the Cr forms a thin tight coherent layer of Cr-oxide. This Cr oxide coating prevents further corrosion so long as it is not chemically or physically removed. If the SS has been subject to mechanical abrasion, the corrosion resistance can sometimes be restored by a light exposure to nitric acid which passivates the surface, restoring the Cr-oxide layer. The carbon content is an important factor in corrosion preformance but so is the heat treatment. Under the wrong conditions and in different environments, all SSs can rust. One of the most common corrosion problems is sensitization which occurs in the heat affect zone (HAZ) around welds. If the C content is high enough and the heat is high enough, the Cr atoms in solid solution form Cr-carbides and are no longer available to form a protective Cr-oxide. The corrosion resistance can be restored by appropriate heat treatment.
- Q:How are steel coils used in the production of automotive wheels?
- Steel coils are used in the production of automotive wheels as the primary material for manufacturing the wheel rims. These coils are processed and formed into the desired shape, ensuring strength and durability for the wheels.
- Q:Are steel coils resistant to rust and corrosion?
- Steel coils exhibit resistance to rust and corrosion. Typically, these coils are crafted from either carbon steel or stainless steel, both of which possess exceptional properties for combating corrosion. Carbon steel coils are frequently coated with a protective layer, such as zinc or a polymer coating, to augment their resistance to rust and corrosion. Conversely, stainless steel coils possess inherent corrosion-resistant qualities due to the presence of chromium. This element creates a protective oxide layer on the steel's surface, effectively preventing rust and corrosion. Nonetheless, it is crucial to acknowledge that the extent of resistance may also hinge on the specific grade and quality of the steel employed in the coils, as well as the environmental conditions to which they are exposed.
- Q:How do steel coils contribute to the automotive industry?
- The automotive industry heavily relies on steel coils to manufacture different components and structures for vehicles. These coils are made from high-quality steel and undergo a series of processes, such as hot rolling, cold rolling, and annealing, to achieve the desired properties. One of the main applications of steel coils in the automotive industry is for producing body panels and frames. The strength and durability of steel make it an ideal material for these purposes, providing structural integrity and protection to the vehicle. Through a stamping process, steel coils are transformed into sheets, allowing manufacturers to create intricate shapes and designs for various vehicle models. Furthermore, steel coils are also utilized in the production of suspension systems, including springs and shock absorbers. The elasticity and resilience of steel enable these components to withstand the constant impact and weight of the vehicle, ensuring optimal performance and comfort for the driver and passengers. In addition, engine components like crankshafts, camshafts, and cylinder heads are manufactured using steel coils. These components require the strength and thermal resistance that steel provides, ensuring the efficient operation and longevity of the engine. Moreover, steel coils play a crucial role in the production of exhaust systems, which are essential for reducing emissions and noise levels. Steel's resistance to heat and corrosion make it an excellent material choice for exhaust pipes, mufflers, and catalytic converters, ensuring their durability and functionality. Overall, steel coils are indispensable in the automotive industry as they contribute to the manufacturing of various components and structures that are vital for the performance, safety, and longevity of vehicles. The high strength, durability, and versatility of steel make it the preferred material choice, enabling manufacturers to create reliable and efficient automobiles.
- Q:What are the different methods of forming steel coils into sheets?
- There are several methods of forming steel coils into sheets, each with its own advantages and applications. 1. Hot rolling: This is the most common method used to form steel coils into sheets. In this process, the steel is heated above its recrystallization temperature and then passed through a series of rollers. The rollers apply pressure to the heated steel, reducing its thickness and elongating it into a sheet. Hot rolling produces sheets with a smooth surface finish and is suitable for a wide range of applications. 2. Cold rolling: This method involves passing the steel coil through rollers at room temperature. Unlike hot rolling, cold rolling does not require heating the steel. The cold rolling process results in sheets with a higher dimensional accuracy and a smoother surface finish. Cold-rolled sheets are often used in applications where precise dimensions and a polished appearance are required, such as automotive body panels and appliances. 3. Annealing and pickling: This method involves subjecting the steel coil to a heat treatment process called annealing, followed by pickling. Annealing involves heating the steel to a specific temperature and then slowly cooling it, which helps to relieve stress and improve the material's mechanical properties. Pickling is the process of removing impurities and scale from the steel surface. These steps are typically performed before hot or cold rolling to ensure a high-quality end product. 4. Galvanizing: Galvanizing is a process that involves coating steel sheets with a layer of zinc to provide corrosion resistance. The steel coil is first cleaned and then immersed in a bath of molten zinc. The zinc adheres to the surface of the steel, forming a protective layer that prevents rust and corrosion. Galvanized sheets are commonly used in construction, automotive manufacturing, and electrical appliances. 5. Electro-galvanizing: This method is similar to galvanizing, but instead of immersing the steel coil in a bath of molten zinc, an electric current is used to deposit zinc onto the surface of the steel. Electro-galvanizing offers similar corrosion resistance to traditional galvanizing but with a thinner coating. It is often used in applications where a thinner, more lightweight sheet is desired. In summary, the different methods of forming steel coils into sheets include hot rolling, cold rolling, annealing and pickling, galvanizing, and electro-galvanizing. Each method has its own advantages and is suitable for different applications based on the required surface finish, dimensional accuracy, and corrosion resistance.
- Q:How are steel coils used in the manufacturing of agricultural trailers?
- Steel coils are used in the manufacturing of agricultural trailers as they provide the necessary strength and durability required for heavy-duty applications. These coils are typically cut and shaped to form the framework and structural components of the trailer, ensuring it can withstand the demanding conditions of agricultural work. The coils may also be used to fabricate various parts, such as axles, suspensions, and hitches, further enhancing the trailer's robustness.
- Q:How can defects in steel coils be detected?
- Defects in steel coils can be detected through various methods such as visual inspection, non-destructive testing techniques like ultrasonic testing, magnetic particle inspection, eddy current testing, and radiographic testing. These methods help identify surface defects, internal discontinuities, cracks, or other irregularities in the steel coils.
- Q:it seems like the hardness of Stainless steel, i saw 410c stainless stell, i saw 440c stainless steel, what does it means anyway?
- It is the alloy number given by the American Iron and Steel Institute, or AISI. This is the trade organization of the U.S. steel industry, one of the oldest such organizations. 440C is also known under the UNS system as S44004 440C is a high carbon, plain chromium stainless steel. Or more specifically: 18% Cr, ~1.1% C, ~1.0% Mo, Si, and Mn 440c is mostly used in cutlery, bearings, and valve parts; because it has the best strength and hardness after basic heat treatment of any stainless steel. Relatively poor properties in other areas make it less suitable for other types of items. for example 440c becomes very brittle in sub zero temperatures. 410 is similar to 440, but it is a cheaper milder steel with less chromium and carbon, so it is less brittle, more easily worked and machined, but lacks final strength and hardness. it is often used in cheap stainless fasteners and bushings.
- Q:who, when and where was dual phase steel invented?
- Dual Phase steels refers to a distinct group of alloys which are used for automotive bodies. These were developed to give improved deep drawing (for shaping) and strength while on the road. Most of the work was started at the same time in the 1970s as a response to the oil crisis (history repeats!) with SSAB in Europe, US Steel and British Steel leading the way. There are many variants of the dual phase alloys prefered by each of the auto manufacturers. The work on these steels led the way for TRIP (transformation induced plasticity) steels, rephosphorised steels and HSLA (high strength low alloy) steels. There is a distinction between these steels and duplex steels which typically refer to austenitic/ferrtic stainless steels. Also be aware that everyday low carbon steels with 0.1%-0.6% carbon will have a ferritic/pearlitic structure but are not considered to be dual phase So to summarise: Who - major steel companies worldwide When - from about 1973 onwards (up to around 1977 when the developments went in other directions) Where - Europe, USA and Japan (but I'm not sure who it was in Japan doing the work)
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Chinese Best Cold Rolled Steel Coil--Any type in Good Quality
- 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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