• STAINLESS STEEL COILS Grade: J1 , Prime quality System 1
  • STAINLESS STEEL COILS Grade: J1 , Prime quality System 2
  • STAINLESS STEEL COILS Grade: J1 , Prime quality System 3
STAINLESS STEEL COILS Grade: J1 , Prime quality

STAINLESS STEEL COILS Grade: J1 , Prime quality

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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
50 m.t.
Supply Capability:
20000 m.t./month

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STAINLESS STEEL COILS

Packaging & Delivery

Packaging Detail: seaworthy export package

Delivery Detail: on request

Specifications

1.      more than 10 years’ experience on this field

2.  advanced equipments

3.  competitive price

4.  soonest delivery 

                       Product Description :

Commodity

STAINLESS STEEL COILS

Technical Standard: Steel Grade & Standard:J1

Surface Treatment:NO.1

Hot rolled Annealed and Pickled(HRAP)

Grade: J1 , Prime quality

Mill Edge. No connection point in each coil. Component: Ni:1% , Cu: 0.65-0.9%, Cr: 13%, Mn: 10–12%, C: 0.09-0.12%

Package: Properly packed for ocean freight exportation in 20''container

Application:: home appliances, constructions, building, machineries

Our Advantages :

 

1. Expertise:
   
More than 10 years of manufacture: we know how to properly handle every step of production.
2. Competitive price:
 We can offer competitive prices to our customers.
3.  Accuracy:
 
We have excellent technicians and leaders, which can ensure our products are exactly what you want.
4.  Materials:
 All  steel coils are made of high-quality raw materials.
5. 
 Certificate:
 Our products are certified by ISO9001.
6. Productivity:

 
We have large-scales of production lines,, which can guarantee all your orders will    be finished in earliest time.

The furnace heating style: improved Sendzimir heating technology

Hourly output: max.76.3t/h

Process after coating: tension leveling, Passivation or oiling

Our Service

 

Our quality 

Test Equipments of Prepainted Galvanized Steel Coil Salt-spray tester; Atomic absorption spectrophotometer; Rockwell typer hardness tester; Tensile test machine; Metrohm titration; Laboratory Bend test machine.

 Our packing

 

Properly packed for ocean freight exportation in 20''container, galvanized metal fluted rings on inner and outer edges, galvanized metal & waterproof paper wall protection disk, galvanized metal & waterproof paper around circumference.

R&D department 

R&D department concentrates on researching and developing reliable products with best quality. The quality department test and control every process of production to guarantee the best quality of product


Q:Want to get stainless steel sink. I want quality, durability, quiet, etc. Any suggestions??
One part of our home is the kitchen, which is usually one of the busiest parts of the home. And part of it is the kitchen sink; as you look at the sink, you can hardly tell how much work is done in the sink. And in our daily activities, most of us use our sink in our own personal needs. Most of the time, we wash our face and clean our clothes, shoes and anything that needs to be washed in our sink. With this kind of job that the sink is going through in its everyday life, sink must be tough enough to take all the pressure of its job. Ordinary sink will not last long when it is use regularly. It may acquire rust, scratches and dent as we have use it in a regular basis, this is why we need to look for a sink that can manage to handle different usage and tasks in our home. In choosing a sink for our home, we must consider the quality and not the price alone. Stainless steel sink is easy to clean; stain and rust are needed not to worry because stainless steel sink is proven a rustproof material. But of course proper care for the sink should always be taken care of to make use of the sink for a very long time. In shopping for a sink, it can be hassle knowing that stainless steel sink is made of heavy material. And the good news is that stainless steel sink can be bought online. You can shop through the internet and you can have the freedom to choose a sink that will fit your kitchen.
Q:Could someone please explain what happens when steel is heat treated and why these happenings cause the steel to become harder? Please dig down into the micro details of the crystallites but in somewhat laymen's terms. Also describe the processes which achieve these results; if you have the time. Thanks for your time and effort.
Alright, usually whu heat you heat treat mild steel, this is because you would like it stronger than you got it. To do this you must alter the grain structure of the part or in other words, the CRYSTALLITES. Ultimately you'll end up altering the nature of the grains structure changing the tensile strength it can handle, yield strength, and even change the elongation percentage that it can tolerate under load. Heat treatment controls the rate of diffusion, and the rate of cooling within the microstructure to create these elements. Usually what they use to do this is add an element to it to make it stronger such as carbon to increase its rockwell hardness, which by the way the lower you go the harder the part can become. Heat treatment can be used in more ways than this. It can also be used to weaken the parts grain structure. This will lower the parts mechanical properties making it softer and more ductile or easier to manipulate if you have to bend it into a particular shape. Typically if you allow the part to cool after heat treatment it does go through annealing. The part will be heat treated into different stages. The first being the austenitic crystal phase which depending on how hard and strong you want it, will be at its peak. When it is cooled, it will go through a will transform to martensite which is a hard yet brittle crystalline structure. Martenised part will usually be tempered to a certain degree to improve the mechanical properties to what is needed. There is more to this and you can use the link below to read more about it.
Q:How are steel coils processed before being used in manufacturing?
Steel coils undergo several processing steps before they are used in manufacturing. These steps typically include cleaning, pickling, cold rolling, annealing, and coating. Cleaning involves removing any dirt or impurities from the surface of the coil. Pickling is a chemical process that removes scale and oxides from the steel, enhancing its surface quality. Cold rolling reduces the thickness and improves the hardness of the steel. Annealing involves heating the coil and then slowly cooling it to enhance its ductility and reduce internal stresses. Lastly, coating is applied to protect the steel from corrosion or to enhance its appearance.
Q:What are the different coil packaging materials used for steel coils?
Different materials are used for packaging steel coils, each with its own unique properties and benefits. Some of the most commonly used materials are as follows: 1. Stretch film is a flexible material that tightly wraps around the coil, providing protection against dust, moisture, and scratches. 2. Steel strapping is a strong and durable option that ensures the coils remain tightly bound during transportation or storage, thanks to its high tensile strength and resistance to breakage. 3. Plastic strapping, on the other hand, is a lightweight and cost-effective alternative to steel strapping. It offers good shock absorption and is resistant to rust and corrosion, making it suitable for smaller or lighter steel coils. 4. Paperboard is an environmentally friendly packaging material that provides a protective layer against dust and minor impacts. It also allows for slight breathability to prevent moisture buildup. 5. Wooden crates are commonly used for large or heavy steel coils, as they offer sturdy support and protection during handling, transportation, or storage. 6. Corrugated cardboard is a versatile and lightweight material suitable for smaller steel coils. It provides cushioning and protection against minor impacts, and it is easily recyclable. The choice of packaging material for steel coils depends on factors such as coil size and weight, transportation requirements, and the desired level of protection. Each material has its own advantages and should be selected based on the specific needs of the steel coil packaging.
Q:How are steel coils used in the production of heating systems?
The production of heating systems relies on the utilization of steel coils in various ways. One primary application of steel coils in heating systems involves their incorporation in the construction of heat exchangers. Heat exchangers serve a vital purpose in the transfer of heat from one medium to another within the heating system. Typically, the steel coils are shaped into tubes or fins, which maximize the surface area for optimal heat transfer. In a typical heating system setup, the steel coils allow hot gases or liquids to pass through them, while another medium, such as air or water, flows over or through the coils. This arrangement facilitates the efficient transfer of heat energy from the hotter medium to the cooler one, effectively heating the air or water for distribution throughout the heating system. Steel coils are also employed in the production of radiant heating panels or floor heating systems in heating applications. In these instances, the steel coils are usually embedded within a panel or positioned beneath the flooring. When electricity or hot water passes through the coils, they heat up and emit heat to the surrounding environment. This particular heating system type boasts high efficiency and ensures a comfortable and evenly distributed heat output. Moreover, steel coils are integral components of heating systems such as boilers, furnaces, and heat pumps. These heating system units often require the use of steel coils due to their excellent heat transfer capabilities and durability. The integration of steel coils into the design of these units guarantees efficient and reliable heat generation and distribution. In summary, steel coils play a critical role in the production of heating systems as they enable efficient heat transfer, provide durability, and facilitate the generation and distribution of heat.
Q:How are steel coils inspected for defects?
To ensure the quality of steel coils meets required standards, various methods are used to inspect them for defects. Visual inspection is a common method, where trained inspectors examine the coil's surface for visible defects like cracks, scratches, or dents. This can be done through direct observation or with the help of magnifying tools. Another method is magnetic particle inspection, which detects surface and near-surface defects like cracks or voids. Here, a magnetic field is applied to the coil, and magnetic powder is spread on the surface. If any defects are present, the powder will be drawn to them, making them visible to the inspector. Ultrasonic testing is also commonly employed to inspect steel coils for defects. It involves transmitting high-frequency sound waves into the coil and analyzing the reflected waves. Any deviations in the sound waves can indicate the presence of defects like cracks or voids within the coil. Eddy current testing is another method used to detect defects in steel coils. It works by using electromagnetic induction to generate eddy currents within the coil. Any changes in these currents caused by defects in the material are detected and analyzed by the inspector. Finally, in some cases, destructive testing is performed on steel coils. This involves taking a sample from the coil and subjecting it to tests such as tension or bend testing. These tests evaluate the mechanical properties of the steel and indirectly indicate the presence of defects. Overall, a combination of visual inspection, magnetic particle inspection, ultrasonic testing, eddy current testing, and potentially destructive testing is used to inspect steel coils for defects. These methods ensure that any defects are identified and addressed, guaranteeing the delivery of high-quality steel coils to customers.
Q:How are steel coils coated to prevent rust and corrosion?
Steel coils are coated to prevent rust and corrosion through a process called galvanization, wherein a layer of zinc is applied to the surface. This zinc layer acts as a sacrificial barrier, protecting the steel from exposure to moisture and oxygen, thereby preventing rust and corrosion.
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:for instance Cr-Ni steeldoes this refer to plated steel or a uniform mixture
stainless steel is an alloy normally iron with additions of C, Mn, Ni, Cr, and Nb - amounts added depend on properties required. Corrosion resistance is due to a very thin but dense layer of chromium oxide which forms at the surface and prevents further attack. Ordinary steel on the other hand becomes coated with a porous layer of iron oxide(rust) through which the atmosphere can pass and cause further corrosion.
Q:my friend needs sensitive ears....she wants to borrow mine but it says surgical steel,what does that mean?
It means they are hypoallergenic.

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