Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008
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- Loading Port:
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- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
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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 cryogenic applications?
- Cryogenic applications can indeed utilize stainless steel pipes. Stainless steel is widely recognized for its exceptional properties at low temperatures, including admirable strength, flexibility, and resistance against corrosion. These qualities render stainless steel pipes suitable for the transportation and storage of cryogenic fluids, like liquid nitrogen, oxygen, or argon. The high strength-to-weight ratio of stainless steel permits the construction of lightweight and durable cryogenic systems. Furthermore, stainless steel pipes can endure the extreme temperature gradients and thermal stresses commonly encountered in cryogenic applications. Nevertheless, it is crucial to select the appropriate grade of stainless steel specifically engineered for cryogenic service to ensure optimal performance and safety.
- Q: What is the cost of stainless steel pipes compared to other materials?
- The price of stainless steel pipes can vary depending on several factors, such as the type of stainless steel used, the pipes' size and thickness, and the current market conditions. Generally, stainless steel pipes are more expensive than pipes made from carbon steel or PVC. Industries that require corrosion resistance, durability, and strength often prefer stainless steel due to its properties. Examples of such industries include oil and gas, chemical processing, and food processing. Despite the higher cost, the long-term benefits and lower maintenance requirements of stainless steel pipes justify their expense. Furthermore, stainless steel pipes offer advantages in terms of cleanliness and hygiene. They are easy to clean, non-porous, and resistant to bacteria growth. This makes them suitable for use in the pharmaceutical, medical, and food industries. When comparing the cost of stainless steel pipes to other materials, it is crucial to consider the specific requirements of the project or application. While stainless steel pipes may have a higher upfront cost, their superior performance, longevity, and resistance to corrosion often result in long-term cost savings.
- Q: How do you calculate the pipe length required for a specific application?
- To calculate the pipe length required for a specific application, you need to consider factors such as the flow rate, pressure drop, pipe material, and the type of fluid being transported. By using equations and formulas specific to fluid dynamics, you can determine the appropriate pipe length needed to achieve the desired flow and pressure conditions. Additionally, factors like pipe fittings, bends, and elbows also need to be taken into account when calculating the overall pipe length required.
- Q: How can the inner walls of stainless steel tubes be polished?
- After polishing, because the surface oxide layer received damage, it is best to use acid solution surface passivation treatment, otherwise it is easy to rust.
- Q: Are stainless steel pipes suitable for semiconductor industries?
- Yes, stainless steel pipes are suitable for semiconductor industries. Stainless steel is widely used in various industries, including semiconductor manufacturing, due to its excellent properties. One of the main reasons stainless steel pipes are suitable for semiconductor industries is their high corrosion resistance. The semiconductor manufacturing process involves the use of various corrosive chemicals and gases. Stainless steel pipes are highly resistant to corrosion, ensuring that they can withstand the harsh environment and maintain their integrity over a long period of time. Additionally, stainless steel pipes have excellent mechanical properties, such as high strength and durability. This is crucial in semiconductor industries where the pipes need to withstand high pressure and temperature conditions. Stainless steel pipes can handle these demanding conditions without deformation or failure, ensuring the safety and efficiency of the semiconductor manufacturing process. Furthermore, stainless steel pipes have good cleanliness and hygienic properties. In semiconductor industries where cleanliness is essential to prevent contamination, stainless steel pipes are favored. They have a smooth surface, which prevents the accumulation of particles and facilitates easy cleaning and sterilization. Lastly, stainless steel pipes have good thermal conductivity. This property is important in semiconductor industries where temperature control is crucial. Stainless steel pipes can efficiently transfer heat, ensuring stable and precise temperature control during various manufacturing processes. In conclusion, stainless steel pipes are highly suitable for semiconductor industries due to their corrosion resistance, mechanical properties, cleanliness, and thermal conductivity. They provide reliable and efficient performance, making them a preferred choice for the demanding requirements of semiconductor manufacturing.
- Q: Are stainless steel pipes resistant to fire?
- Yes, stainless steel pipes are highly resistant to fire due to their exceptional heat resistance properties. They can withstand high temperatures without losing their structural integrity, making them a safe and reliable choice for applications where fire protection is a concern.
- Q: How do stainless steel pipes compare to fiberglass pipes?
- Distinct characteristics and advantages set stainless steel pipes and fiberglass pipes apart. When comparing the two, one must consider factors such as strength, durability, corrosion resistance, cost, and ease of installation. In terms of strength, stainless steel pipes have a clear advantage, known for their exceptional strength and durability. They can withstand high-pressure applications and heavy loads. On the other hand, fiberglass pipes are relatively weaker and may not be suitable for high-strength and resistance applications. Durability is another crucial aspect. Stainless steel pipes are highly durable, enduring extreme temperatures, chemicals, and physical stress without deteriorating. Fiberglass pipes, though durable, are more susceptible to damage from impact, extreme temperatures, and UV radiation. Therefore, stainless steel pipes are a more reliable choice for long-term use in harsh environments. Corrosion resistance is significant when selecting pipes. Stainless steel pipes are renowned for their excellent corrosion resistance, making them ideal for applications where exposure to corrosive substances is a concern. Fiberglass pipes, while relatively resistant to many chemicals, can be affected by certain corrosive substances and may require additional protective coatings. Cost is an important consideration for any project. Due to the higher cost of raw materials and manufacturing processes, stainless steel pipes tend to be more expensive than fiberglass pipes. Conversely, fiberglass pipes are generally more affordable, making them a cost-effective option for budget-constrained projects. Finally, ease of installation is worth mentioning. The weight and rigidity of stainless steel pipes require specialized tools and expertise for installation. In contrast, fiberglass pipes being lightweight and flexible, are easier to handle and install, reducing labor costs and time. In conclusion, stainless steel pipes offer superior strength, durability, and corrosion resistance compared to fiberglass pipes. However, fiberglass pipes are a more cost-effective option and easier to install. Ultimately, the choice between the two depends on the specific project requirements, considering factors such as application, budget, and environmental conditions.
- Q: Can stainless steel pipes be used for food storage facilities?
- Indeed, food storage facilities can utilize stainless steel pipes. The reason behind this preference lies in the durability, corrosion resistance, and hygienic properties of stainless steel. Its resistance to reacting with food or emitting harmful substances renders it safe for storing diverse food products. Moreover, stainless steel pipes are easily maintainable and cleanable, which guarantees the utmost hygiene in food storage facilities. Additionally, stainless steel's resistance to high temperatures makes it appropriate for storing both hot and cold food items. All in all, stainless steel pipes prove to be an exceptional option for food storage facilities on account of their safety, durability, and hygienic attributes.
- Q: What is the average lifespan of stainless steel pipes?
- The average lifespan of stainless steel pipes can vary depending on several factors, including the quality of the stainless steel used, the environment in which the pipes are installed, and the maintenance and care they receive. However, as a general estimate, stainless steel pipes can have a lifespan of 50 to 100 years or more. This is due to the inherent corrosion resistance of stainless steel, which helps to protect the pipes from rust and other forms of degradation. Additionally, stainless steel pipes are known for their durability and strength, allowing them to withstand high temperatures, pressure, and other harsh conditions. With proper installation and maintenance, stainless steel pipes can provide long-lasting and reliable performance in various applications, such as plumbing, industrial processes, and construction projects.
- Q: Are stainless steel pipes resistant to caustic environments?
- Stainless steel pipes possess exceptional resistance against caustic environments. Stainless steel is widely recognized for its ability to withstand corrosion, making it an ideal choice for usage in diverse harsh settings, including those containing caustic substances. The abundant presence of chromium within stainless steel forms a protective and inactive layer on the surface of the pipes, serving as a defense mechanism that prevents corrosion and upholds the integrity of the material. This layer serves as a formidable barrier, effectively safeguarding the steel from the damaging impact of caustic substances like acids, alkalis, and other chemicals. Hence, stainless steel pipes are an unparalleled option for applications that involve exposure to caustic environments, guaranteeing exceptional endurance, longevity, and dependability under such circumstances.
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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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