Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008
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1、Structure of Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Description：
Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings. It can be molded, rolling, and it can create amazing shapes to make it perfect, It is used as experimental buildings, The use of steel pipe welding of large stainless steel covers other examples.
2、Main Features of the Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008：
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Strong heat dissipation ability
• Good visual effect
•Reasonable price
3、Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Images：
4、Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Specification：
composition of duplex stainless pipe（%）
| Steel grade | C≤ | Mn≤ | Si≤ | S≤ | P≤ | Cr | Ni | Mo | Cu≤ | N |
| S32750((SAF2507) 00Cr22Ni7Mo4N | 0.03 | 1.20 | 0.80 | 0.020 | 0.035 | 24.0/ 26.0 | 6.0/ 8.0 | 3.0/ 5.0 | 0.50 | 0.24/ 0.32 |
| S31803（SAF2205） 00Cr22Ni5Mo3N | 0.03 | 2.00 | 1.0 | 0.02 | 0.030 | 21.0/ 23.0 | 4.50/ 6.50 | 2.50/ 3.50 | 0.08/ 0.20 | |
| S31500（3RE60） 00Cr18Ni5Mo3Si2 | 0.03 | 1.2/ 2.00 | 1. 4/ 2.00 | 0.030 | 0.030 | 18.0/ 19.0 | 4.25/ 5.25 | 2.50/ 2.00 | 0.05/ 0.10 |
Mechanical Properties of duplex pipe：
| Steel Grade | Heat Treatment Temperature ℃ | Ab（MPa）≥ | As（MPa）≥ | ∮≥ | brinell | rockwell |
| S32750（SAF2507） 00Cr22Ni5Mo3N | 1025-1125 water | 800 | 550 | 15 | 310 | 32 |
| S31803（SAF2205） 00Cr22Ni5Mo3N | 1020-1100 | 620 | 450 | 25 | 290 | 30.5 |
| S31500（3RE60） 00Cr18Ni5Mo3Si2 | 980-1040 | 630 | 440 | 30 | 290 | 30.5 |
Details：
Outer Diameter | 6mm--159mm | |||||
Thickness | 0.3mm - 3.0mm | |||||
Length | 6m or as customers' request | |||||
Surface | 180G, 320G, 400G Satin / Hairline 400G, 500G, 600G or 800G Mirror finish | |||||
Application | Decoration construction, upholstery, industry instrument | |||||
Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT | |||||
5、FAQ of Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008：
①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.
②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.
③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.
Any question, pls feel free to contact us !
- Q:Can stainless steel pipes be used for drinking water supply?
- Certainly! For drinking water supply, stainless steel pipes are a viable option. Being a remarkably sturdy and corrosion-resistant substance, stainless steel proves to be an appropriate selection for securely and hygienically conveying drinking water. Unlike alternative materials, stainless steel pipes refrain from releasing detrimental chemicals or impurities into the water, thereby preserving its quality and purity. Moreover, stainless steel pipes possess resistance against bacterial proliferation, thereby enhancing the safety of the drinking water.
- Q:How do stainless steel pipes compare to carbon fiber pipes?
- Stainless steel pipes and carbon fiber pipes have their own unique characteristics and are used in different applications. Stainless steel pipes are known for their durability and strength. They are highly resistant to corrosion and can withstand high temperatures and pressures. This makes them suitable for various industries such as oil and gas, chemical, and construction. Stainless steel pipes have a longer lifespan and can handle heavy loads, making them a reliable choice for many applications. However, stainless steel pipes are relatively heavy and may require additional support structures. On the other hand, carbon fiber pipes are lightweight and have a high strength-to-weight ratio. They are made from carbon fibers embedded in a resin matrix, resulting in a strong and rigid material. Carbon fiber pipes are commonly used in industries such as aerospace, automotive, and sports equipment. The lightweight nature of carbon fiber pipes allows for increased fuel efficiency in vehicles and improved performance in sports equipment. However, carbon fiber pipes are more expensive than stainless steel pipes and may not be as resistant to extreme temperatures or corrosive environments. In summary, stainless steel pipes are known for their durability and resistance to corrosion, making them suitable for heavy-duty applications. Carbon fiber pipes, on the other hand, are lightweight and offer high strength-to-weight ratio, making them ideal for applications where weight reduction is critical. The choice between stainless steel and carbon fiber pipes ultimately depends on the specific requirements of the application and the trade-offs between cost, weight, and performance.
- Q:How do you prevent condensation in stainless steel pipes?
- To prevent condensation in stainless steel pipes, there are several measures you can take: 1. Insulation: Apply insulation materials, such as foam or fiberglass, around the pipes. This will help maintain the temperature inside the pipe, preventing the outer surface from becoming cold and reducing the likelihood of condensation. 2. Vapor barriers: Install vapor barriers around the pipes to prevent moisture from reaching the pipe surface and causing condensation. These barriers can be made of materials like plastic or aluminum foil and should be properly sealed to ensure their effectiveness. 3. Increase pipe temperature: If possible, increase the temperature of the fluid or gas flowing through the pipes. This can be achieved by adjusting the temperature of the heat source or utilizing heat tracing systems that provide a constant heat supply to the pipe. 4. Proper ventilation: Ensure there is adequate airflow around the pipes, especially in areas where condensation is more likely to occur. This helps to dissipate any moisture that may accumulate and reduce the chances of condensation. 5. Reduce humidity: In areas with high humidity, consider implementing dehumidification methods, such as using dehumidifiers or installing moisture-absorbing materials, to lower the overall moisture content in the air. This can help minimize the potential for condensation. By implementing these preventive measures, you can significantly reduce the risk of condensation in stainless steel pipes, thereby protecting them from potential corrosion and maintaining their overall performance and longevity.
- Q:Can stainless steel pipes be used in extreme weather conditions?
- Yes, stainless steel pipes can be used in extreme weather conditions. Stainless steel is known for its excellent corrosion resistance, which makes it ideal for withstanding harsh weather conditions such as extreme temperatures, high humidity, and exposure to saltwater or chemicals. Additionally, stainless steel pipes have high strength and durability, making them resistant to impact and deformation caused by extreme weather events like storms or earthquakes. Therefore, stainless steel pipes are often chosen for applications in industries such as oil and gas, chemical processing, and marine, where they need to perform reliably in extreme weather conditions.
- Q:Can stainless steel pipes be chrome plated?
- Indeed, it is possible to chrome plate stainless steel pipes. The process entails electroplating a thin chromium layer onto the surface of the pipe. This procedure not only grants the pipe a glossy and mirror-like look, but also offers extra safeguard against corrosion. Nevertheless, it is crucial to bear in mind that the stainless steel pipe necessitates appropriate preparation and cleansing prior to conducting the chrome plating process. Furthermore, it is advisable to have the chrome plating procedure executed by a proficient professional or a specialized company experienced in this field.
- Q:What's the easiest way to distinguish between stainless steel 202 and 304?
- 304# and 202# are American Standard grade 304 is 0Cr18Ni9202shi 1Cr18Nn8Ni5N
- Q:Can stainless steel pipes be insulated with cork?
- Yes, stainless steel pipes can be insulated with cork. Cork is a versatile material that is commonly used for insulation purposes. It has excellent insulating properties, including thermal insulation, noise reduction, and fire resistance. Cork insulation is suitable for various applications, including pipes, as it can effectively reduce heat transfer and prevent condensation. Additionally, cork is a sustainable and eco-friendly material, making it a popular choice for insulation. Therefore, using cork to insulate stainless steel pipes is a viable option.
- Q:Can stainless steel pipes be electropolished?
- Yes, stainless steel pipes can be electropolished. Electropolishing is a process that can be applied to stainless steel pipes to enhance their surface finish, remove impurities, and improve corrosion resistance. It involves immersing the pipes in an electrolyte solution and applying an electric current to remove a controlled layer of metal from the surface, resulting in a smooth and polished finish.
- Q:Are stainless steel pipes resistant to stress corrosion cracking?
- In general, stainless steel pipes exhibit resistance to stress corrosion cracking. Stainless steel is a material known for its ability to resist corrosion and degradation, thanks to its high levels of chromium and nickel. The occurrence of stress corrosion cracking is typically triggered by a combination of tensile stress, a corrosive environment, and a susceptible material. Nevertheless, stainless steel demonstrates excellent resistance against stress corrosion cracking due to its composition and inherent properties. It can endure high levels of stress without experiencing significant degradation or cracking, making it a suitable choice for applications that necessitate durability and corrosion resistance.
- Q:What are the different types of stainless steel pipe finishes?
- There are several different types of stainless steel pipe finishes, including brushed, mirror, satin, and mill finishes. Each finish has its own unique appearance and texture, ranging from a smooth and shiny surface to a more matte or textured finish. The choice of finish depends on the desired aesthetic and functional requirements of the application.
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Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008
- Ref Price:
-
- Loading Port:
- Ningbo
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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