Welding of duplex stainless steel pipe with good performance
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 4000 m.t./month
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Detail infomation
Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),
UNS32760(1.4501)
Chemical Composition
Grade | C max | Si max | Mn max | P max | S max | Cr | Ni | Mo | N |
UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
UNS S32750 | 550 | 800 | 15 | 20 |
UNS S31803 | 450 | 620 | 25 | 20 |
UNS S31500 | 440 | 630 | 30 | 20 |
Supplementary Testing :
we also carry out on the manufactured products supplementary testing.
Radiography Testing |
Macro Testing |
Liquid Penetrate testing |
- Q:What is the difference between 321 and 321H stainless steel pipes?
- The carbon content and resulting mechanical properties are what distinguish 321 stainless steel pipes from 321H stainless steel pipes. Both grades are stabilized austenitic stainless steels with titanium as the stabilizing element. However, 321H contains a higher carbon content compared to 321. The higher carbon content in 321H contributes to enhanced strength at high temperatures and resistance to creep. This makes 321H ideal for applications involving elevated temperatures, such as the production of heat exchangers, furnace components, and other high-temperature equipment. On the contrary, 321 stainless steel pipes are commonly utilized in situations where exposure to high temperatures is not necessary. They possess excellent resistance to intergranular corrosion and are frequently employed in the aerospace industry, as well as in the manufacturing of exhaust systems, chemical processing equipment, and other versatile applications. To summarize, the distinction between 321 and 321H stainless steel pipes lies in their carbon content and resulting mechanical properties. 321H is specifically engineered for high-temperature applications, while 321 is suitable for general-purpose applications that do not require exposure to elevated temperatures.
- Q:Are stainless steel pipes suitable for fire sprinkler systems?
- Yes, stainless steel pipes are suitable for fire sprinkler systems. Stainless steel is highly resistant to corrosion, making it a durable and long-lasting material for pipe systems. This resistance to corrosion ensures that the pipes will not weaken or deteriorate over time, ensuring the reliability and effectiveness of the fire sprinkler system. Additionally, stainless steel pipes have excellent heat resistance, which is crucial in fire protection systems. They can withstand high temperatures without warping or melting, ensuring that the pipes will not fail during a fire emergency. Overall, stainless steel pipes provide the necessary strength, durability, and heat resistance required for fire sprinkler systems, making them a suitable choice for such applications.
- Q:Can stainless steel pipes be used for mining and mineral processing applications?
- Mining and mineral processing applications can utilize stainless steel pipes. The exceptional corrosion resistance of stainless steel makes it ideal for use in environments with exposure to chemicals, acids, and high temperatures commonly found in these operations. Stainless steel pipes provide several benefits in these applications. Firstly, their corrosion resistance ensures they can withstand harsh conditions, reducing the risk of pipe failure, and minimizing maintenance and replacement costs. Additionally, stainless steel pipes are highly durable and have a long lifespan, making them cost-effective in the long term. Moreover, stainless steel pipes are non-reactive and do not contaminate the materials they transport, which is crucial for maintaining product purity in mining and mineral processing. This makes them suitable for conveying various minerals, ores, and chemicals without compromising quality or causing contamination issues. Another advantage of stainless steel pipes is their versatility. They can be manufactured in different sizes, shapes, and thicknesses to meet specific requirements in mining and mineral processing. Additionally, stainless steel pipes can be easily connected to other components and systems through welding, threading, or coupling, allowing for efficient installation and integration into existing infrastructure. In conclusion, stainless steel pipes are an excellent choice for mining and mineral processing applications due to their corrosion resistance, durability, non-reactivity, and versatility. They provide a reliable and cost-effective solution for conveying various materials in demanding environments while maintaining the integrity and purity of processed products.
- Q:What is the external protection used for stainless steel pipes?
- The external protection used for stainless steel pipes primarily involves the application of a protective coating or treatment to prevent corrosion and maintain the integrity of the pipes. This is important because even though stainless steel is known for its resistance to corrosion, it is still susceptible to environmental factors and can corrode under certain conditions. One commonly used external protection method is the application of a corrosion-resistant coating such as epoxy, polyethylene, or zinc. These coatings act as a barrier between the stainless steel pipe and the surrounding environment, preventing direct contact and potential corrosion. The coating also helps to protect the pipe from physical damage, such as scratches or abrasions, that could lead to corrosion. Another method of external protection is the use of cathodic protection, which involves the placement of sacrificial anodes or the application of an electric current to the stainless steel pipe. This process helps to direct the corrosion away from the pipe by sacrificing the anodes or by creating an electrochemical reaction that inhibits corrosion. Additionally, external protection may also involve the use of insulation materials to prevent condensation and moisture buildup on the pipe's surface. Moisture can accelerate corrosion, so proper insulation can help maintain the integrity of the stainless steel pipes. Overall, the external protection used for stainless steel pipes aims to prevent corrosion and maintain the longevity and reliability of the pipes. By implementing various protective coatings, cathodic protection, and insulation, stainless steel pipes can be safeguarded from environmental factors and ensure their optimal performance.
- Q:Can stainless steel pipes be wrapped with fiberglass insulation?
- Yes, stainless steel pipes can be wrapped with fiberglass insulation. Fiberglass insulation is commonly used to insulate various types of pipes, including stainless steel pipes. It helps to reduce heat loss and maintain the temperature of the pipe, making it more energy efficient. Additionally, fiberglass insulation also provides soundproofing and condensation control benefits. When wrapping stainless steel pipes with fiberglass insulation, it is important to ensure that the insulation is properly installed and sealed to prevent any gaps or air leaks. This will optimize the insulation performance and ensure maximum energy savings.
- Q:Can stainless steel pipes be used for pharmaceutical manufacturing?
- Yes, stainless steel pipes can be used for pharmaceutical manufacturing. Stainless steel is a commonly used material in the pharmaceutical industry due to its excellent corrosion resistance, high strength, and ease of sterilization. It is suitable for transporting various pharmaceutical fluids and gases while ensuring cleanliness, safety, and compliance with industry regulations.
- Q:What is the yield strength of stainless steel pipes?
- The yield strength of stainless steel pipes varies depending on the specific grade and composition of the stainless steel. However, stainless steel pipes generally have yield strengths ranging from 30,000 to 100,000 pounds per square inch (psi). It is important to note that the yield strength represents the point at which the material begins to deform permanently under applied stress. Therefore, it is crucial to choose the appropriate grade and thickness of stainless steel pipe based on the intended application and the specific mechanical properties required.
- Q:What is passivation in stainless steel pipes?
- Passivation in stainless steel pipes refers to the process of treating the surface of the pipes to remove any contaminants and enhance its corrosion resistance properties. It involves the use of chemical solutions or acids to remove iron particles and other impurities from the surface, creating a protective oxide layer that prevents further corrosion.
- Q:Can stainless steel pipes be used for chemical reactors?
- Yes, stainless steel pipes can be used for chemical reactors. Stainless steel is a popular choice for chemical reactors due to its excellent corrosion resistance properties. It is highly resistant to chemical reactions and is able to withstand the harsh conditions and corrosive nature of many chemicals used in industrial processes. Stainless steel also has high strength and durability, making it suitable for handling high-pressure and high-temperature applications commonly found in chemical reactors. Additionally, stainless steel is easy to clean and maintain, which is crucial for maintaining the purity and integrity of the chemicals being processed. Overall, stainless steel pipes are a reliable and efficient choice for chemical reactors.
- Q:Can stainless steel pipes be insulated with neoprene?
- Yes, stainless steel pipes can be insulated with neoprene. Neoprene is a commonly used material for pipe insulation due to its excellent thermal properties and resistance to moisture. It provides effective insulation and protects against heat loss or condensation on stainless steel pipes.
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Welding of duplex stainless steel pipe with good performance
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 4000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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