• Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability System 1
  • Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability System 2
  • Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability System 3
Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability

Chinese Best Cold Rolled Steel Coil JIS G 3302 --Excellent Process Capability

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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: I'm a big fan of stainless steel and sterling silver, but not of the humidity of the country I'm in. Therefore I sweat more. Gross, I know. I'm buying a necklace chain for my ring.So does sweat contribute to tarnishing of silver and steel? The real kind?
steel shouldn't really tarnish, it rusts and moisture increases that. Silver tarnishes when exposed to air and sulfur. Moisture increases the process a bit, but it happens anyway. Sweat is not gross, it's a necessary function of your body, otherwise you would die. A lot of sports people wear jewelry and they sweat a lot. If you wear the jewelry all the time, that will prevent the tarnish a bit. If you take it off, clean it (water and dish washing liquid), dry it and put it in a zip lock back to keep it away from air and moisture. In the end, cleaning the jewelry is quick and easy so don't worry about it.
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: How are steel coils used in the manufacturing of automotive parts?
Steel coils are used in the manufacturing of automotive parts as they provide a versatile and cost-effective material for producing various components. These coils are first processed and shaped into specific forms, such as sheets or strips, which are then further worked on to create parts like body panels, chassis, and suspension components. The high strength and durability of steel make it suitable for ensuring the structural integrity and safety of automobiles, while its malleability allows for easy forming and welding processes.
Q: How are steel coils used in the manufacturing of household appliances?
Steel coils are commonly used in the manufacturing of household appliances as they serve as the primary material for constructing various components. These coils are shaped, cut, and processed to create parts such as frames, panels, and supports. Additionally, steel coils are used for creating durable and robust structures that provide stability and longevity to appliances like refrigerators, washing machines, and stoves.
Q: How are steel coils used in the production of building facades?
Steel coils are commonly used in the production of building facades as they provide strength, durability, and versatility. These coils are typically processed into flat sheets or panels and then cut, shaped, and attached to the framework of the facade. The steel coils can be coated with various finishes or paints to enhance their aesthetic appeal and protect against corrosion. Overall, steel coils play a crucial role in constructing robust and visually appealing building facades.
Q: How are steel coils used in the manufacturing of pipelines?
Steel coils are used in the manufacturing of pipelines as they are rolled into sheets to form the base material for the pipes. These coils are uncoiled and passed through a series of machines where they are cut, shaped, and welded together to create the desired length and diameter of the pipeline.
Q: What are the different types of welding used for steel coils?
There are several different types of welding used for steel coils, depending on the specific requirements and applications. Here are some of the most common types of welding techniques used for steel coil fabrication: 1. Shielded Metal Arc Welding (SMAW): Also known as stick welding, it involves the use of a flux-coated electrode and an electric current to create an arc between the electrode and the base material. SMAW is a versatile and widely used welding technique suitable for various steel coil applications. 2. Gas Metal Arc Welding (GMAW): Commonly known as MIG (Metal Inert Gas) welding, GMAW uses a continuous wire electrode and a shielding gas to protect the weld pool from atmospheric contamination. GMAW is known for its high welding speed and ease of automation, making it a popular choice for steel coil manufacturing. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a tubular electrode with flux inside. The flux provides both the shielding gas and additional alloying elements, resulting in increased efficiency and improved weld quality. FCAW is often used in high-speed welding applications for steel coils. 4. Gas Tungsten Arc Welding (GTAW): Also known as TIG (Tungsten Inert Gas) welding, GTAW uses a non-consumable tungsten electrode and an inert gas, typically argon, to shield the weld area. GTAW produces high-quality, precise welds with excellent control over the heat input, making it suitable for thin steel coil materials and critical welding applications. 5. Submerged Arc Welding (SAW): This welding technique involves the use of a continuously fed wire electrode and a granular flux that covers the weld area. The arc is submerged under the flux, providing excellent protection and reducing the need for post-weld cleaning. SAW is commonly used for welding thick steel coils due to its high deposition rates and deep penetration capabilities. These are just a few examples of the different types of welding techniques used for steel coil fabrication. The choice of welding method depends on factors such as the specific steel grade, thickness, desired weld quality, production speed, and cost considerations. It is essential to select the appropriate welding technique to ensure the durability and performance of the steel coils in various applications.
Q: How are steel coils used in the manufacturing of storage cabinets?
Steel coils are used in the manufacturing of storage cabinets as they provide the raw material for forming the cabinet's metal components. Coils are unrolled, cut, and shaped into the necessary panels, shelves, and doors, which are then assembled to create the cabinets. The strength and durability of steel make it an ideal material for these cabinets, ensuring they can safely store and organize various items.
Q: Steel coil from vertical to horizontal, what sling needs?
The sling has little effect, but it is easy to damage the surface of rolled steel.
Q: How are steel coils inspected for weldability?
Steel coils are inspected for weldability through a series of comprehensive tests and examinations. The main objective of this inspection is to assess the quality and suitability of the steel coils for welding processes. Firstly, visual inspection is conducted to identify any visual defects or irregularities on the surface of the coils. This includes checking for surface roughness, cracks, scratches, or any other imperfections that may affect the weldability. Next, destructive testing methods such as tensile testing and impact testing are performed. Tensile testing measures the strength and ductility of the steel, ensuring it meets the required mechanical properties for welding. Impact testing evaluates the steel's resistance to brittle fracture, which is crucial in determining its weldability. Furthermore, non-destructive testing techniques such as ultrasonic testing (UT) and magnetic particle inspection (MPI) are employed to detect internal defects and discontinuities. UT uses high-frequency sound waves to identify any hidden flaws within the steel, while MPI utilizes magnetic particles to identify surface and near-surface defects. Additionally, chemical analysis is carried out to determine the steel's composition and ensure it meets the required specifications for welding. This analysis involves checking the levels of carbon, manganese, sulfur, and other elements that may affect the weldability and overall performance of the steel. Moreover, weldability testing is performed to evaluate the steel's response to welding processes. This involves conducting various welding trials using different techniques and parameters to determine the steel's behavior during welding, such as its susceptibility to cracking, distortion, or other welding-related issues. Overall, the inspection of steel coils for weldability is a multi-faceted process that combines visual, destructive, non-destructive, chemical, and weldability testing methods. By conducting these thorough inspections, manufacturers can ensure that the steel coils meet the required standards and are suitable for welding applications.

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