Cold Rolled Ss201 304 J3 Stainless Steel Strip for Different Knife Production

Austenitic Stainless Steel 
stainless steel with an austenitic structure at room temperature. Steel contains Cr≈18%, Ni≈8%-25% and C≈0.1%. Steel has high toughness and plasticity, but low strength

Martensitic Stainless Steel
A steel whose mechanical properties can be adjusted by heat treatment. It has different strength and toughness at different tempering temperatures.

Duplex Stainless Steel
This type of steel has the characteristics of large thermal conductivity, small expansion coefficient, good oxidation resistance, and excellent stress corrosion resistance.

Ferritic Stainless Steel
It contains 15% to 30% chromium and has a body-centered cubic crystal structure. This type of steel generally does not contain nickel, and sometimes contains a small amount of Mo, Ti, Nb and other elements.

The quality inspection of stainless steel coils is an important part of ensuring that products meet standards and meet customer needs. It mainly includes the following aspects:
1. Chemical composition detection
Through spectral analysis and other methods, the content of various elements in stainless steel coils, such as chromium, nickel, molybdenum, etc., is detected to determine whether it meets the corresponding grade standards. For example, the chromium content in 304 stainless steel should be 18% - 20%, and the nickel content should be 8% - 10.5%.
2. Mechanical property detection
Tensile test: Measure the tensile strength, yield strength, elongation and other indicators of stainless steel coils to evaluate their ability to withstand tensile loads.
Hardness test: Commonly used test methods include Rockwell hardness and Brinell hardness to understand the hardness characteristics of the material.
3. Surface quality inspection
Appearance inspection: Observe whether there are defects such as cracks, scratches, pits, rust spots, etc. on the surface of the stainless steel coil.
Roughness detection: Use a roughness tester to detect whether the surface roughness meets the requirements.
4. Dimensional accuracy detection
Thickness measurement: Use tools such as micrometers to measure the thickness of stainless steel coils at different positions to ensure that their thickness is uniform and within the specified tolerance range.
Width measurement: Measure the width of the coil to ensure that it is within the allowable deviation.
5. Corrosion resistance detection
Through methods such as salt spray tests, simulate the corrosion resistance of stainless steel coils in harsh environments and evaluate their corrosion resistance.
6. Nondestructive testing
Ultrasonic testing: Used to detect whether there are defects inside, such as inclusions, pores, etc.
Magnetic particle testing: Suitable for detecting surface and near-surface defects.
7. Grain size detection
Observe the grain size and distribution of stainless steel coils through a metallographic microscope to evaluate the uniformity and performance of their organizational structure.
Only after strict quality testing can stainless steel coils be safely and reliably used in various fields. For example, in the food processing industry, if the corrosion resistance of stainless steel coils does not meet the standards, it may cause food contamination; in the construction industry, if the dimensional accuracy is unqualified, it will affect the construction quality and aesthetics.

Stainless steel strips have many important applications.
In the manufacturing industry, stainless steel strips are often used to produce various mechanical parts, such as springs, fasteners, etc. Their corrosion resistance and high strength ensure the long-term stable operation of parts in complex environments.
In the field of kitchenware, stainless steel strips are commonly used materials for making knives, pots, etc. Their hygiene, corrosion resistance and easy cleaning characteristics meet the high requirements of kitchen utensils.
In terms of architectural decoration, it can be used to make railings, handrails, etc., which are not only beautiful, but also can resist erosion from various weather conditions.
In the electronics industry, stainless steel strips can be used as shell materials or internal structural parts of electronic products to provide good protection and support.
In the field of automobile manufacturing, it is used to make automobile exhaust systems, decorative strips and other parts. Its high temperature resistance and corrosion resistance meet the needs of the automobile working environment.

About Our Company
   Jiangsu Qifeng Metal Products Co., Ltd.is a manufacturer engaged in the production of galvanized strip ,Hot rolled coil and Cold rolled coil ..As a professional manufacturer of galvanized strip steel and coil of strip, the company has many competitive advantages in the same industry.Convenient transportation environment has unique advantages for the company to exchange and trade foreign products. With the acceleration of global economic integration and the needs of brand development and construction strategy,Qifeng company takes innovation as the guide, takes strengthening network construction as the engine,drives the high-quality development of enterprises in a three-dimensional and multi-level manner,creates a digital service platform,establishes an Cross border E-commerce in early 2012,opens online(B2B,B2C)sales network channels,and settled in other platforms to implement e-commerce management and perfect after-sales service system.

    Under the guidance of the company tenet of "pioneering, enterprising, pragmatic and innovative", the company,backed by sufficient capital and technical force continuously introduced production equipment, strengthened and improved testing equipment,constantly adjusted the management mode,created products featuring the production of galvanized strip steel,Cold rolled coil and Accessory products of  steel strip ,and made unremitting efforts towards the company goal of "pursuing excellent quality and creating a warm world".In the business philosophy of honest service and the shaping of corporate image,the company exchanges with peers with sincere enthusiasm and willingness to cooperate.so as to achieve win-win results and create a better future.

Products:PPGL/PPGI
Galvanized steel strip series
Cold-rolled steel strip series
Stainless Steel Strip
Packaging steel strip series
Cable steel strip series
Carbon steel pipes
Stainless steel pipes
Precision steel pipes
Steel bars/Steel profile
Steel roofing sheets
Aluminum profile
Copper profile
PTE strip
Strip bridge prefabricated bellows strip series ancillary products processing,etc

Wooden tray, iron wrapper, waterproof paper.The steel strips supplied according to the standard are usually applied with common rustproof oil film, which can be swept away with alkali solution. 
The supplier guarantees that the oiled products will be free from rust under normal packing, transportation, loading and storage conditions within 6 Months, the approved delivery date. However, product without oil coating can also be subject subject to statement in the contract reached after discussion between the user and the supplier.

Certifications :
Mission:
Our mission is build our reputation by supplying high quality products with unparalleled reliability and guaranteed performance. We are committed to providing you with the best solutions to become your trusted partners in your business and life.

Company Values:
1. Innovation
2. Commitment to Excellence
3. Listening & Respect
4. Team Work

Our services:
★OEM service
★Factory directly supply ,we can offer most competitive price
★Free samples
★Responsible after sales service
★Product testing before delivery
★Rich sales&shipment experience
★Flexible payment terms
★Within 7-30 days after deposit,base on quantity.

Q1: How many countries you already exported?
A1: Exported to more than 50 countries mainly from Russia, India,Vietnam, Egypt, Turkey, Saudi Arabia,
Brazil,Chille,Dubai,Belgium etc.

Q2: How long will it take to execute my order?
A2: Our normal time to execute the order is 7-20 working days. We will let you know the estimated lead
time after payment ASAP.

Q3 Can I have a sample for testing?
A3: Free samples, you just need to pay the freight.

Q4 Do you have inspection for the products before packing?
A4: 100% self-inspection for the products, we put the quality as our first priority.

Q5 what kind of payment does your company support?
A5: T/T, 100% L/C at sight, are all accepted.

Why Do You Choose Us ?

·  We have high reputation based on best quality products;
·  We can offer competitive price for your buiness;
·  Our after-sell service team will help you solving all the related problems ;
·  Shortest and stable delivery time;
·  We can provide stainless steel processing services.