Black Cold rolled steel coil

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 1000 m.t./month

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Quick Details

Standard:	AISI,ASTM,BS,DIN,GB,JIS,AISI ASTM BS DIN GB JIS	Steel Grade:	Q235	Thickness:	0.25mm-3mm
Place of Origin:	China (Mainland)	Technique:	Cold Rolled,Hot rolled Cold Rolled	Surface Treatment:	Polished
Application:	Construction Application,Construction Building /Home Appliances	Model Number:	Galvanized Steel Coil	Brand Name:	JMS,JMS Steel
Width:	32-940mm	Length:	As require	Grade:	SGCC/DX51D/SGCD
Zinc coating:	40-300g/m2 Both Side	Spangle:	Normal /Small / Big	Payment:	L/C T/T
Certifacte:	BV SGS ISO API CE

Packaging & Delivery

Packaging Detail:	Standard export packing 1.Innermost is plastic cloth picking 2.Middle is waterproof paper 3.Outmost is iron packing 4.As your request
Delivery Detail:	Will be send Within 1 month

Specifications

32-600mm Width is most advantage
5% LOWER Price in Market
One Stop STEEL Distribution Center
ISO API BV CE SGS Verify

Cold Rolled Steel Black Strips/Plate/Sheet/Coil

Describe of Cold Rolled Steel Black Strips/Plate/Sheet/Coil

Commodity	Cold Rolled Steel Black Strips/Plate/Sheet/Coil
Technical Standard:	JIS 3302 / ASTM A653 / EN10143
Grade	DX51D/SGCH SCGG/ S250/Q195/Q235/Q345
Types:	Commercial / Drawing / Deep Drawing / Structural quality
Width	32-1250mm(32-600 is Most Advantage Width)
Thickness	0.12-4mm (0.5-4mm is the most advantage thickness)
Type of coating:	Galvanized, Oiled, As required
Zinc coating	Z30-300g/m2
Surface treatment	Chromed / Skin Pass/ Oiled/ Slightly Oiled/ Dry/ Anti-Fingerprint
Surface structure:	Zero Spangle / Minimized Spangle / Regular Spangle/ Big Spangle
ID coil	508mm or 610mm
Coil weight	3-8 MT per coil
Package:	Properly packed for ocean freight exportation in 20'containers
Application:	Industrial panels, roofing and siding for painting
Price terms	FOB,CFR,CIF
Payment terms	30%TT in advance+70% TT or irrevocable 70%L/C at sight
delivery time	25 days after recepit of 30% TT
Remarks	Insurance is as requirements
	MTC will be handed on with shipping documents
	We accept the third party certification test

Q:How are steel coils protected against UV radiation?: Steel coils are protected against UV radiation through a process known as coil coating. Coil coating involves applying a protective layer of paint or coating to the surface of the steel coil. This coating acts as a barrier between the steel and UV radiation, preventing direct exposure of the metal to the harmful effects of the sun's ultraviolet rays. The protective coating used for steel coils is specially formulated to provide excellent resistance against UV radiation. It typically contains pigments and additives that are designed to absorb or reflect UV light, reducing the amount of radiation that reaches the steel surface. Furthermore, the coating is applied in multiple layers to ensure maximum protection. The first layer, known as the primer, enhances adhesion to the steel surface and provides additional corrosion resistance. The subsequent layers, such as the base coat and topcoat, offer improved durability and UV resistance. In addition to the coating itself, the steel coils can be further protected against UV radiation by storing them in shaded areas or using covers to shield them from direct sunlight when stored outdoors. This additional precaution helps minimize the exposure of the coated steel coils to UV radiation, thereby prolonging their lifespan and maintaining their appearance. Overall, the combination of a high-quality protective coating, proper storage, and handling practices ensures that steel coils are effectively shielded against the damaging effects of UV radiation, allowing them to maintain their structural integrity and aesthetic appeal over an extended period of time.

Q:tinplate,hot rolled coil,hot rolled sheet,cold rolled coil,cold rolled sheet,d bar,wire rod,triangle,structural steel,steel pipe,steel tube,carbon steel pipe: Here are the top 30 steel producing companies in the world, listed by the megaton output: 1. 63.0 Mton Mittal Steel Company NV (Global) [2] 2. 46.7 Mton Arcelor (Europe) [3] 3. 32.0 Mton Nippon Steel (Japan) [4] 4. 30.5 Mton POSCO (South Korea) [5] 5. 29.9 Mton JFE (Japan) [6] 6. 23.8 Mton Shanghai Baosteel Group Corporation (China) 7. 19.3 Mton United States Steel Corporation (United States) 8. 18.4 Mton Nucor Corporation (United States) 9. 18.2 Mton Corus Group (Europe) [7] 10. 17.5 Mton Riva Group (Europe) [8] 11. 16.5 Mton ThyssenKrupp (Europe) [9] 12. 16.1 Mton Tangshan (China) 13. 13.9 Mton EvrazHolding (Russia) 14. 13.7 Mton Gerdau (Brazil) 15. 13.6 Mton Severstal (Russia) 16. 13.5 Mton Sumitomo Metal Industries (Japan) 17. 13.4 Mton SAIL (India) 18. 12.0 Mton Wuhan Iron and Steel (China) 19. 11.9 Mton Anshan (China) 20. 11.4 Mton Magnitogorsk (Russia) 21. 10.5 Mton Jiangsu Shagang (China) 22. 10.5 Mton Shougang (China) 23. 10.4 Mton Jinan (China) 24. 10.3 Mton Laiwu (China) 25. 10.3 Mton China Steel (Taiwan) [10] 26. 9.6 Mton Maanshan 27. 9.4 Mton Imidro 28. 8.7 Mton Techint 29. 8.7 Mton Usiminas (Brazil) 30. 8.5 Mton Novolipetsk (Russia)

Q:What are the common defects in steel coil surface finishes?: Common defects in steel coil surface finishes include scratches, pits, roll marks, stains, and unevenness. These defects can be caused by various factors such as improper handling, processing issues, or equipment malfunction. These surface defects affect the aesthetics and quality of the steel coil, making it unsuitable for certain applications or requiring additional processing to rectify the defects.

Q:I have a carbon steel file that I want to bend in a letter C shape. So, what is the malliable temperature? If it's low, could it be done in a camp fire?: It's now not rather that rough. You can use your charcoal grill to do it. First construct a colossal fireplace in it after which bury the metal within the coals. It'll simplest take approximately ten minuites or so for the metal to warmth by way of. Then decide on it out of the coals with tongs and drop it right into a bucket of water. Repeat as preferred. Eventually it is going to get as brittle as glass. To repair this, you have got to anneal the steel. Again warmth the steel within the coals, simplest this time allow it keep there till the coals cross the entire manner out all by way of themselves. Next day while the entire manner cool, Take it out and blank it off. Viola!, you may have hardened metal.

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??: That exists.. Ts called hell in a cell. And normal cage matches are fine the way they are

Q:How are steel coils used in the production of steel knobs?: Steel coils are used in the production of steel knobs by being fed into a stamping machine, where they are cut into the desired shape and size. The coils provide a continuous supply of steel material, ensuring efficiency and consistency in knob production.

Q:what is the difference between METAL and STEEL?: Metal is the generic name for several pure chemical elements and they alloys that can be made from them. Steel is used to designate alloys that consist mainly of iron, with a limited proportion of carbon in them.

Q:What are the different coil winding methods used for steel coils?: There are several different coil winding methods used for steel coils, each with its own advantages and applications. 1. Layer winding: This is the most common method used for steel coils. It involves winding the steel strip or sheet in concentric layers, one on top of the other, to form a coil. This method is ideal for thin, narrow strips and provides good stability and strength to the coil. 2. Cross winding: In this method, the steel strip is wound in a crisscross pattern, alternating the direction of each layer. This helps to distribute the stress evenly across the coil and prevents the coil from becoming unstable. Cross winding is commonly used for thicker or wider steel strips. 3. Spiral winding: This method involves winding the steel strip in a spiral pattern, forming a coil with a gradual increase in diameter. Spiral winding is often used for large or heavy steel coils, as it allows for easy handling and transportation. It also provides good stability and prevents the coil from collapsing. 4. Toroidal winding: This method is used for producing toroidal or donut-shaped coils. The steel strip is wound in a circular path, with each layer placed inside the previous one. Toroidal winding is commonly used in applications such as transformers, where the coil needs to have a specific shape and size. 5. Interleaved winding: This method involves interleaving two or more steel strips together during the winding process. Interleaved winding is used to produce composite coils with different materials or thicknesses. It provides enhanced strength, stability, and allows for customized designs. Each of these coil winding methods has its own advantages and is used based on the specific requirements of the steel coil application. The choice of method depends on factors such as strip thickness, width, tensile strength, and desired coil properties.

Q:What are the different methods of tempering steel coils?: There exist numerous techniques for tempering steel coils, each possessing unique advantages and disadvantages. Some of the most prevalent techniques include: 1. Air cooling: This method, the simplest and most commonly employed, involves heating the coils to a specific temperature and allowing them to cool naturally in the surrounding air. Although relatively speedy and cost-effective, this technique can result in uneven cooling and may lack precise control over the final properties of the steel. 2. Water quenching: In this approach, the steel coils are heated and then rapidly cooled by immersing them in a water bath. Water quenching provides a swifter and more controlled cooling rate than air cooling, resulting in increased hardness and strength. However, it may also cause heightened distortion and the development of internal stresses in the steel. 3. Oil quenching: Similar to water quenching, this method entails immersing the steel coils in an oil bath to rapidly cool them. Oil quenching offers a slower and more uniform cooling rate in comparison to water quenching, leading to reduced distortion and internal stresses. Nevertheless, it yields slightly lower hardness and strength than water quenching. 4. Salt bath quenching: This technique necessitates immersing the steel coils in a heated bath of molten salt for rapid cooling. Salt bath quenching ensures an even and controlled cooling rate, resulting in improved hardness and strength compared to air or water quenching. However, it requires specialized equipment and may not be suitable for all steel types. 5. Induction hardening: In this method, the steel coils undergo induction heating before being rapidly cooled using air, water, or oil quenching. Induction hardening permits precise control over the heating and cooling process, thereby achieving specific hardness and strength properties in desired areas of the steel. Nonetheless, it demands specialized equipment and is generally employed for specific applications or sections of the steel coils. Ultimately, the choice of tempering method relies on various factors, including the desired properties of the steel coils, the type of steel employed, and the specific requirements of the end application.

Q:What are the common coil processing equipment used in the industry?: Some common coil processing equipment used in the industry include coil slitters, coil flatteners, coil feeders, and coil recoilers. These machines are essential for processing metal coils into various shapes and sizes, allowing for efficient production and manufacturing processes.

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