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Your Professional Stainless Steel Supplier

 

JN is a company with more than 15 years of experience in providing high-quality Stainless steel and Nickel Alloys. Its product range covers Pipes, steel Plates, Flanges, Prefabricated welding products, etc. Since its establishment, we have been constantly pursuing technological innovation and excellent quality and have become a leader in the industry.Technical consultation: providing customers with professional technical support and consultation to help them choose the most suitable materials and processing solutions.

 
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Why Choose Us
 
01/

Product Application
Oil and Gas, Power Plants, Chemical and Petrochemical, Food and Beverage, Pharmaceutical, Automotive, Aerospace, Marine and many other Industries.

02/

One-stop Services
We provide high-quality products according to customer needs, and we can also recommend suitable products to customers according to their needs.

03/

Production Market
We are mainly engaged in pipelines for oil and gas plants, and the main markets are Southeast Asia, Asia, the Middle East, Europe, some countries in North America and South America, and some other countries in need. Because these customers recognize our company, they will also introduce local customers to us.

04/

Our Certificate
We have passed a series of quality certifications: CE, ISO 9000, PED EU pressure equipment manufacturing license, GOOST, Special equipment manufacturing license (TS), Factory accreditation certificate (MA) of the United States Classification Society, ect.

 

Types of Stainless Steel
Stainless Steel 316L Mod / UNS S31603 / 1.4435

 

AUSTENITIC STAINLESS STEEL

 

 

It contains high nickel and chromium, usually non-magnetic, with good corrosion resistance, toughness and weldability. Common grades: 304, 316, 310, etc.

 

MARTENSITIC STAINLESS STEEL

 

High carbon and chromium, can obtain high hardness and strength through heat treatment, has magnetism, but poor corrosion resistance. Common grades: 410, 420, 440, etc.

 

FERRITIC STAINLESS STEEL

 

High chromium and low nickel content, usually has good corrosion resistance and oxidation resistance, strong magnetism, but poor toughness and weldability. Common grades: 430, 446, etc.

 

DUPLEX STEEL

 

It combines the characteristics of austenite and ferrite, with good strength and corrosion resistance. 2205 is a classic duplex steel, including F51 and F60.

 

PRECIPITATION HARDENING STAINLESS STEEL

 

It improves strength through precipitation hardening process, usually has good corrosion resistance and mechanical properties.

 

Products Description

 

 

Product

Stainless Steel Tubes / Pipes

Standard

ASTM, ASME, EN, JIS, DIN, GB/T, GOST etc

Material Grade

304, 304L, 316, 316L, 316Ti, 316H, 316LN, 316Lmod, 317, 317L, 321, 321H, 347, 310S, 904L, 17-4PH, S31254 F44, N08367 AL6XN, etc

Specification

Outer Diameter: 1/2” - 48”

Thickness: SCH5 - SCHXXS

Length: As your requirements

Type

Welded and Seamless

Manufacturing Technique

Hot rolling, hot work, cold rolling, cold-drawn.

Shape

Round, square, oval, triangle, hexagon, rhombus, octagon, semicircle, etc.

End

BE (Beveled End) or PE (Plain End)

Applications

Widely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,paper making,shipbuilding,boiler fields.Pipes also can be made according to the customer's required.

Packaging

Inner Packing: Caps at both ends, steel strong trips on every bundle,

Outer Packing: PE Wrapping outside,

Export Standard Packing Method (Bundle with steel strip, steel pallet),

shipped with 20' or 40' container or in bulk carrier.

As Customers' Request.

Delivery

According To The Quantity And Specification Of Each Order.

 

Benefits of Stainless Steel
 

Strength
A fundamental property of stainless steel is its strength. It remains incredibly strong at very high or low temperatures, making it a highly sought after metal for demand applications like aviation.

 

Easy to clean
As it is one of the most hygienic materials, its use in catering and medical applications is suitable. It doesn’t support the growth of bacteria and is easy to clean and sterilize, hence is low maintenance.

 

Aesthetics
Strength is not the only property of stainless steel. It also looks great which is why it is commonly featured in architecture. It adds a sleek and contemporary look to classic and modern spaces, without compromising on functionality.

 

Corrosion resistance
Stainless steel can fend off rust and water stains as it is highly resistant to corrosion. This is why stainless steel applications extend to outdoor as well as indoor applications at various pressure and temperature extremes.

 

Recyclable
Most of the stainless steel is made from recycled steel. Impressively, its qualities do not deteriorate once the metal is recycled, allowing it to be reused continuously and benefit the environment.

 

Application of Stainless Steel

Medical Equipment 

Stainless steel is used extensively in modern medical equipment due to its ease of sterilization and high corrosion resistance. Surgery and dental instruments, surgical tables, and larger equipment such as MRI scanners are all made from stainless steel material.

 

 

 

 

Aircrafts and Aerospace 

Aircraft must be able to resist a wide range of climatic conditions, including extremes in temperature, precipitation, and elevation pressures. The qualities of stainless steel enable it to easily address all of these issues, making it the most essential material for aircraft and aerospace applications.

Building and Construction

Stainless steel is a fantastic construction material since it is both strong and flexible. Because of its corrosion resistance, it provides structures a superb modern aesthetic while still being easy to maintain.

High-pressure Applications

Stainless steel’s strength makes it ideal for building, but it also makes it resistant to high pressure and temperatures. As a result, stainless steel is an excellent choice for high-pressure applications such as energy systems like power plants.

Food Industry

Stainless steel is advantageous in food and catering applications for many of the same reasons that it is advantageous in medical equipment. Stainless steel makes for fantastic, sharp knives and can endure high heat for cooking, in addition to being easy to clean.

 

 

Surface Finish

 

 

N0.1

Original

Pickled after hot rolling

2D

Blunt

Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling

2B

Blurred

Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + tempering rolling

N0.3

Matte

Polishing and tempering rolling with 100-120 mesh abrasive materials

N0.4

Matte

Polishing and tempering rolling with 150-180 mesh abrasive material

NO.240

Matte

Polishing and tempering rolling with 240 mesh abrasive materials

NO.320

Matte

Polishing and tempering rolling with 320 mesh abrasive materials

NO.400

Matte

Polishing and tempering rolling with 400 mesh abrasive materials

HL

Brushed

Grind the surface of the steel belt with an appropriate grinding grain size to make it show a certain longitudinal texture

BA

Bright

The surface is annealed and shows high reflectivity

6K

Mirror

Rough grinding and polishing

8K

Mirror

Fine grinding and polishing

 

 

Lead time

 

 

Quantity (pieces)

 1 - 100000 > 100000

Lead time (days)

30

 To be negotiated

 

 

FAQ

 

 

Q: What are the specifications of stainless steel?

A: Stainless steel specifications include properties, grades, product forms, sizes, material standards, composition, temper, etc. Generally, we determine stainless steel specifications based on customer applications.

Q: Which grade of stainless steel is best?

A: Grade 304 stainless steel stands out even among steel alloys for its high tensile strength, approximately 621 MPa (90 ksi). Because of its tensile strength, temperature, and corrosion resistance, 304 stainless steel is used for various applications.

Q: What are the 4 types of stainless steel?

A: The four general groups of stainless steel are austenitic, ferritic, duplex, and martensitic.

Q: How to check stainless steel grade?

A: Checking the grade of stainless steel requires many methods, here's a practical guide:

Check markings:

  • Look for engraved grades or material codes on the surface.

Magnetic Test: quick but inaccurate

  • Austenitic grades: Typically non-magnetic.
  • Ferritic, Martensitic, Duplex: Strongly magnetic.

Grind the steel and observe sparks:

  • Low-carbon stainless: Short, red-orange sparks; few branches.
  • High-carbon/Alloyed: Brighter sparks, possible forks.

Molybdenum (Mo) Test: Drop Murexide reagent on the surface.

  • Red-violet color = Mo present → Suggests 316/317/2205 grades.
  • No color change → Likely 304/430.

Nickel (Ni) Test: Use Dimethylglyoxime (DMG) reagent.

  • Bright red = Ni present → Confirms austenitic (304/316) or duplex grades.

Q: How to check steel grade?

A: You can find a steel's grade by measuring the amount of carbon in the steel, its other alloys, and how the manufacturer processes it. Steel is graded and categorized into four groups; Carbon, Alloys, Stainless, and Tool.

As one of the leading stainless steel manufacturers and suppliers in China, we warmly welcome you to buy high-grade stainless steel for sale here from our factory. All our products are with high quality and competitive price.

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