• Welded and seamless 201 202 304 304L 316 316L stainless steel pipe System 1
  • Welded and seamless 201 202 304 304L 316 316L stainless steel pipe System 2
Welded and seamless 201 202 304 304L 316 316L stainless steel pipe

Welded and seamless 201 202 304 304L 316 316L stainless steel pipe

Ref Price:
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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
5 m.t.
Supply Capability:
2500 m.t./month

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Item specifice

Standard:
AISI,ASTM
Technique:
Cold Drawn
Shape:
Round
Surface Treatment:
Polished
Steel Grade:
300 Series,200 Series
Thickness:
0.1-160mm
Width:
no
Length:
1000-as client‘s client
Outer Diameter:
12-200mm
Net Weight:
3kg

Welded and seamless 201 202 304 304L 316 316L stainless steel pipe 

 

Material

304:0cr18ni9, 0cr17ni8

201:1cr17mn6ni5n,1cr13mn9ni1n

316:0cr17ni12 or as customer’s request

Size(round pipe)

9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 318, 35, 60, 63.5, 73, 76.2, 88.9, 101.6, 

114.3, 127, 133, 59, 168, 219 mm or customized

Size (square pipe)

10×10,12×12,18×18,23×23,38×38,50×50,70×70,100×100,20×10,23×10,24×12,25×13,36×23,

40×20,50×20,60×15,75×45,80×60,95×45,100×60,150×100 mm or customized

Size (oval pipe)

30×15,80×40 mm os customized

Thickness

0.24-3 mm

Length 

6m or according to customer’s request

Outer diameter

6.35-219mm

Tolerance 

Outer diameter :±0.2mm

Thickness :±0.02mm

Length :±0.5mm

Process method

Code drawn, annealed with nitrogen protection, ultrasonic,automatic shape, polished

Finishing 

A: sanded  B: 400#-600# mirror  C: hairline brushed  D: TIN titanlum

E : HL brushed & mirror (two kinds of finishing for one pipe)

                                                                  Chemical Composition 

Material

C

Si

Mn

P

S

Cr

Ni

201

≤0.12

≤0.75

9.5-12.5

≤0.045

≤0.03

13-16

0.8-1.5

304

≤0.08

≤0.75

≤2.0

≤0.045

≤0.03

18-19

8-10

316

≤0.08

≤1.00

≤2.0

≤0.035

≤0.03

10-14

16.0-18.5

430

≤0.12

≤0.75

≤2.0

≤0.04

≤0.03

16-18

≤0.6

 

Square pipe and rectangle pipe

 

round pipe

PACK & DELIVERY

Packaging & Delivery

1, Packaging: seaworthy package or as required 

2, Delivery: 35-45 days or based on quantity

 

COMPANY INFORMATION

 Company Information 

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

 

WORK SHOP

 

 

 

 

Client

Export Markets Our target market is the international market. Every year we export most of products to countries like India, Pakistan, South Korea, Brazil, Australia, South Africa, Spain, Sri Lanka, Taiwan, Hong Kong, etc.

 

 

 

F A Q

FAQ

1, Your advantages?

     professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

      SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3,  Factory or Trading Company?

      CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

    30% TT as deposit and 70% before delivery.

    Irrevocable L/C at sight.

 

Q:Can stainless steel pipes be used for air pollution control systems?
Yes, stainless steel pipes can be used for air pollution control systems. Stainless steel is known for its corrosion resistance, durability, and high-temperature strength, making it a suitable material for handling corrosive gases and pollutants in air pollution control systems. Additionally, stainless steel pipes offer excellent resistance to chemical reactions and can withstand harsh operating conditions, making them an ideal choice for such applications.
Q:What is the difference between 430 and 316 stainless steel pipes?
The main difference between 430 and 316 stainless steel pipes is their composition and properties. 430 stainless steel is a ferritic stainless steel, which means it contains a higher percentage of chromium and has a lower nickel content compared to 316 stainless steel. This makes 430 stainless steel less corrosion resistant and less suitable for applications in highly corrosive environments. On the other hand, 316 stainless steel is an austenitic stainless steel, which contains higher amounts of chromium and nickel, providing excellent corrosion resistance and making it suitable for use in marine environments and industries with high levels of exposure to chemicals and salt. Additionally, 316 stainless steel has superior strength and heat resistance compared to 430 stainless steel.
Q:What are the weld sleeves for stainless steel pipes?
Quota refers to the quantity standard of manpower, material resources, financial resources and time consumed by qualified units under certain technical and organizational conditions. In the labor organization reasonable and rational use of materials and machinery under the condition of a predetermined number of resources consumed by the completed units qualified product standards, the level of social productive forces, it reflects the level of a certain period of time. For each construction project, the amount of labor is calculated, including basic labor and other labor. Plus the materials for this project, including basic materials and other materials. The unit price is based on the labor value of the different types of work at that time. The value of the material is the budgeted price based on the previous market price.
Q:How do you prevent corrosion in stainless steel pipes?
To prevent corrosion in stainless steel pipes, there are a few measures that can be taken. Firstly, it is important to ensure that the stainless steel pipes are made from a high-quality grade of stainless steel. Different grades of stainless steel have varying levels of resistance to corrosion, so selecting the appropriate grade for the specific application is crucial. Secondly, regular cleaning and maintenance of the stainless steel pipes is essential. This involves removing any dirt, debris, or contaminants that can potentially cause corrosion. Cleaning can be done using mild soap or detergent, followed by rinsing with clean water and drying the pipes thoroughly. Moreover, it is advisable to avoid using abrasive cleaners or scrubbers that can scratch the surface of the stainless steel pipes, as this can create small crevices where corrosion can occur. Instead, soft cloth or sponge should be used for cleaning. Additionally, it is essential to protect stainless steel pipes from exposure to corrosive substances or environments. This can be achieved by applying a protective coating or using a corrosion-resistant paint on the pipes. This barrier will prevent direct contact between the stainless steel and corrosive substances, reducing the risk of corrosion. Furthermore, maintaining proper water chemistry is important for preventing corrosion in stainless steel pipes used for plumbing applications. Monitoring and controlling the pH level, hardness, and alkalinity of the water can help minimize the corrosive effects on the pipes. Lastly, ensuring proper installation and design of stainless steel pipes is crucial. This includes avoiding tight bends or sharp corners, which can trap moisture and lead to corrosion. Proper insulation and ventilation should also be considered to prevent condensation and subsequent corrosion. By following these preventive measures, corrosion in stainless steel pipes can be significantly reduced, ensuring their longevity and optimal performance.
Q:What is the difference between stainless steel tube 304L and 304N?
The lower carbon content minimizes the precipitation of carbides in the heat affected zone near the weld, while the precipitation of the carbides may lead to intergranular corrosion in stainless steels in certain environments.
Q:Are stainless steel pipes suitable for high-temperature applications?
Indeed, high-temperature applications are well-suited for stainless steel pipes. Renowned for its remarkable resistance to corrosion, impressive strength, and ability to withstand heat, stainless steel is highly regarded. Its structural integrity and performance remain intact even under extreme temperatures. Stainless steel pipes find utility in numerous industries like power generation, petrochemical, oil and gas, and food processing, where elevated temperatures are prevalent. Moreover, the durability and extensive lifespan of stainless steel pipes make them a dependable option for high-temperature applications.
Q:What are the different grades of stainless steel used in pipes?
Pipes commonly utilize various grades of stainless steel, each possessing distinct properties and characteristics. Notable grades include: 1. Stainless Steel Grade 304: Recognized as highly versatile and widely employed, Grade 304 exhibits non-magnetic qualities, exceptional resistance to corrosion, and ease of weldability. Its applications predominantly revolve around sectors emphasizing hygiene and cleanliness, such as food processing plants, hospitals, and the pharmaceutical industry. 2. Stainless Steel Grade 316: Renowned for its unparalleled resistance to corrosion, particularly in environments abundant in chloride or saltwater exposure, Grade 316 frequently finds utilization in marine settings, chemical processing facilities, and coastal areas necessitating robust corrosion resistance. 3. Stainless Steel Grade 321: Grade 321 boasts titanium stabilization, rendering it more impervious to sensitization and intergranular corrosion at elevated temperatures. It commonly serves in high-temperature scenarios, exemplified by exhaust systems, furnaces, and heat exchangers. 4. Stainless Steel Grade 409: Designed specifically for high-temperature applications like automotive exhaust systems, Grade 409 showcases remarkable heat resistance and exhibits low thermal expansion properties, making it an ideal choice for enduring extreme temperatures. 5. Stainless Steel Grade 904L: Grade 904L excels in corrosion resistance, particularly combating pitting and crevice corrosion. Frequently employed in aggressive environments prevalent in chemical processing plants, offshore oil and gas platforms, and pulp and paper industries. These examples merely exemplify the array of stainless steel grades employed in pipe manufacturing. The selection of a particular grade hinges upon the specific application and desired attributes, encompassing corrosion resistance, temperature resistance, and mechanical strength.
Q:What are the dimensions and sizes of stainless steel pipes?
Stainless steel pipes come in various dimensions and sizes to cater to different industrial and commercial applications. The dimensions and sizes of stainless steel pipes are determined by their nominal diameter (DN) and their schedule or wall thickness. The nominal diameter refers to the approximate internal diameter of the pipe, and it is commonly expressed in inches or millimeters. The most commonly available stainless steel pipe sizes range from 1/8 inch (3.175 mm) up to 48 inches (1219 mm) in nominal diameter. However, larger sizes can be custom-made to meet specific requirements. The schedule or wall thickness of stainless steel pipes is denoted by a schedule number, which indicates the thickness of the pipe's walls. The most common schedules for stainless steel pipes are Sch 5, Sch 10, Sch 40, and Sch 80. The higher the schedule number, the thicker the walls of the pipe. In addition to the dimensions and sizes, stainless steel pipes are also available in various lengths, typically ranging from 20 feet (6.1 meters) to 40 feet (12.2 meters). However, custom lengths can also be ordered based on specific project needs. It is worth noting that these dimensions and sizes may vary depending on the standards and specifications set by different countries and industries. Therefore, it is essential to consult the relevant standards or work with a trusted supplier to ensure the accurate dimensions and sizes of stainless steel pipes for a particular application.
Q:What is the difference between 446 and 316 stainless steel pipes?
The main difference between 446 and 316 stainless steel pipes lies in their composition and properties. 446 stainless steel is a ferritic stainless steel that contains chromium, molybdenum, and a small amount of titanium. It offers excellent resistance to high-temperature oxidation, making it suitable for applications involving elevated temperatures. However, it may not be as resistant to corrosion as other stainless steel grades. On the other hand, 316 stainless steel is an austenitic stainless steel that contains chromium, nickel, and molybdenum. It is known for its superior corrosion resistance, making it ideal for applications in corrosive environments, such as marine or chemical industries. In summary, while 446 stainless steel is preferred for high-temperature applications due to its oxidation resistance, 316 stainless steel is chosen for its exceptional corrosion resistance in various environments.
Q:What is sanitary stainless steel pipe?
Surface finish: the pipe inside and outside surface polishing treatment, the pipe surface is bright; it is a mirror. We often say is mainly to prevent the tube away the fluid material formed within the tube wall, a long time is easy to pollute and formed pipe plug.

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