Welded and seamless 201 202 304 304L 316 316L stainless steel pipe
- 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
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:How are stainless steel pipes manufactured?
- Stainless steel pipes are typically manufactured through a two-step process. First, the raw material, stainless steel billets, are heated and pierced to form a hollow tube known as a shell. Then, the shell is further elongated and shaped into the desired pipe size using various methods such as hot extrusion, cold drawing, or welding. These processes ensure the high strength, corrosion resistance, and durability of stainless steel pipes.
- Q:What is the difference between Type 304 and Type 316 stainless steel pipes?
- Type 304 and Type 316 stainless steel pipes find wide application in diverse industries, each possessing distinct composition and physical characteristics. Type 304 stainless steel, a versatile and commonly utilized grade of stainless steel pipe, boasts a higher proportion of chromium and nickel compared to Type 316. Consequently, it exhibits exceptional resistance to corrosion and durability. Type 304 proves ideal for situations where exposure to corrosive substances remains minimal, such as indoor settings or general-purpose utilization. In contrast, Type 316 stainless steel pipes are renowned for their superior corrosion resistance, particularly in more hostile environments. They contain a higher proportion of molybdenum, which bolsters their ability to withstand pitting and crevice corrosion caused by chloride solutions, like seawater or saltwater environments. This renders Type 316 stainless steel pipes suitable for marine applications, chemical processing plants, and situations where exposure to harsh chemicals or high temperatures is inevitable. Regarding physical properties, Type 316 stainless steel pipes exhibit greater tensile strength and yield strength when compared to Type 304. Consequently, they can endure higher pressures and display enhanced resistance against deformation or cracking under stress. In summary, the primary distinction between Type 304 and Type 316 stainless steel pipes lies in their corrosion resistance and physical properties. Type 304 proves suitable for general-purpose use and indoor environments, while Type 316 is preferred for applications necessitating superior corrosion resistance and strength, particularly in aggressive or high-temperature conditions.
- Q:Are stainless steel pipes resistant to crevice corrosion?
- Stainless steel pipes are generally known for their resistance to crevice corrosion. This is due to the presence of a significant amount of chromium in stainless steel, which creates a passive oxide layer on the material's surface. This oxide layer acts as a protective barrier, preventing the entry of corrosive substances, including crevices. However, it is important to consider that the resistance to crevice corrosion can vary based on the grade and composition of stainless steel used, as well as the environmental conditions the pipes are exposed to. Therefore, it is advisable to carefully choose the appropriate grade of stainless steel for the specific application and environment to ensure the best possible defense against crevice corrosion.
- Q:Can stainless steel pipes be coated with PTFE?
- PTFE, also known as polytetrafluoroethylene, can be applied as a coating on stainless steel pipes. This material is highly stable and unreactive, boasting exceptional resistance to chemicals, low friction, and high temperatures. Coating stainless steel pipes with PTFE yields numerous advantages, including reducing friction, preventing corrosion, and enhancing chemical resistance. The PTFE coating creates a smooth surface that is non-stick, facilitating better liquid flow and deterring deposits on the pipe walls. Industries such as chemical processing, food and beverage, pharmaceuticals, and oil and gas benefit greatly from this application, as their pipes are often exposed to aggressive chemicals or high temperatures. Additionally, the PTFE coating offers electrical insulation properties, making it suitable for specific purposes. Ultimately, applying PTFE coating to stainless steel pipes elevates their performance and prolongs their lifespan in various industrial settings.
- Q:Can stainless steel pipes be coated with epoxy?
- Yes, stainless steel pipes can be coated with epoxy. Epoxy coating provides excellent corrosion resistance and can be applied to stainless steel pipes to enhance their durability and protect against various environmental factors.
- Q:Can stainless steel pipes be insulated with polyamide?
- Yes, stainless steel pipes can be insulated with polyamide. Polyamide is a type of plastic material that is known for its excellent insulation properties. It can be used as a coating or a lining for stainless steel pipes to provide insulation against heat or cold. The polyamide insulation helps in preventing heat loss or gain, which is essential for maintaining the desired temperature of fluids or gases flowing through the pipes. Additionally, polyamide also offers protection against corrosion and mechanical damage, further enhancing the durability and lifespan of the stainless steel pipes.
- Q:Can stainless steel pipes be passivated?
- Yes, stainless steel pipes can be passivated. Passivation is a process that removes contaminants from the surface of stainless steel and forms a protective oxide layer, enhancing its corrosion resistance. This process is commonly used in various industries to ensure the long-term durability and performance of stainless steel pipes.
- Q:How are stainless steel pipes measured?
- Stainless steel pipes are typically measured using two main dimensions: the outer diameter (OD) and the wall thickness (WT). The OD represents the overall size of the pipe, while the WT indicates the thickness of the pipe's walls. These measurements are crucial in determining the suitability of a stainless steel pipe for specific applications and ensuring compatibility with fittings and connections.
- Q:What is the difference between 304J4 and 316J4 stainless steel pipes?
- 304J4 and 316J4 stainless steel pipes exhibit contrasting compositions and properties. In terms of their alloy content, 304J4 stainless steel comprises 18-20% chromium and 8-10% nickel, whereas 316J4 stainless steel consists of 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. The elevated levels of nickel and molybdenum in 316J4 stainless steel pipes contribute to their superior resistance against corrosion compared to 304J4 stainless steel pipes. This characteristic renders 316J4 stainless steel pipes more suitable for applications exposed to harsh environments, including marine and chemical industries. Moreover, the increased molybdenum content in 316J4 stainless steel pipes enhances their ability to withstand pitting and crevice corrosion, which commonly occur in chloride-rich surroundings. Consequently, they are the preferred choice for applications involving exposure to seawater or other corrosive substances. Conversely, 304J4 stainless steel pipes offer a more cost-effective option and are frequently employed in less demanding applications, where corrosion resistance is not a primary concern. They find wide usage in industries such as food processing, appliances, and automotive. In conclusion, the fundamental disparities between 304J4 and 316J4 stainless steel pipes lie in their alloy composition and subsequent corrosion resistance properties. 316J4 stainless steel pipes exhibit heightened corrosion resistance, particularly in chloride-rich environments, making them well-suited for more demanding applications, while 304J4 stainless steel pipes present a cost-effective solution and are commonly utilized in less corrosive environments.
- Q:Can stainless steel pipes be used in the oil and gas industry?
- Yes, stainless steel pipes can be used in the oil and gas industry. Stainless steel pipes offer several advantages that make them suitable for use in this industry. Firstly, stainless steel has high corrosion resistance, which is crucial for withstanding the harsh environments and corrosive substances present in the oil and gas industry. This resistance to corrosion helps to prevent leaks and ensures the integrity of the pipes, promoting safety and reliability. Additionally, stainless steel pipes have excellent strength and durability, allowing them to withstand high pressures and temperatures that are often encountered in oil and gas operations. Moreover, stainless steel is non-reactive, meaning it does not contaminate the oil or gas being transported, ensuring the purity and quality of the product. Overall, the superior properties of stainless steel make it a preferred choice for oil and gas industry applications, providing a reliable and long-lasting solution.
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Welded and seamless 201 202 304 304L 316 316L stainless steel pipe
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 2500 m.t./month
OKorder Service Pledge
OKorder Financial Service
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