904l Stainless Steel Seamless Pipe in Wuxi ,China
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 25000 m.t./month
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Specification
904L STAINESS STEEL
UNSN08904
DIN W.NR.1.4539
(Introduction of Commodity)
Similar Grade
UNS | ASTM A240 | Trademark |
UNS N08904 | SUS890L | 904L |
(Chemical Component)
Alloy | % | Ni | Cr | Cu | Mo | C | Mn | Fe | Si | P | S |
904L | Min | 23 | 19 | 1 | 4 | Balance | |||||
Max | 28 | 23 | 2 | 5.0 | 2 | 1 | Balance | 0.045 | 0.035 |
(Physical Properties)
Density | Fusion Point |
8.0g/cm3 | 1300-1390°C |
Mechanical Property
Alloy and state | Tensile Strength | Yield Strength | Elongation |
RM N/MM2 | RP0.2N/MM2 | A5% | |
904L | 490 | 216 | 35 |
904L is a fully austenitic structure, and the general content of high molybdenum austenitic stainless steel, 904L is not sensitive to the precipitation of the ferrite and the alpha phase.
Application
1. petroleum, petrochemical equipment, such as petrochemical equipment in the reactor, etc..
2. Storage and transportation equipment, such as heat exchangers, etc..
3. Power plant flue gas desulfurization device, the main use of the site are: absorption tower body, flue, file door, interior, spray system, etc..
4. Organic acid treatment system of scrubber and fan.
5. Seawater treatment plant, sea water heat exchanger, paper industry equipment, sulfuric acid, nitric acid equipment, acid, pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.
6 .Pharmaceutical factory: centrifuge, reactor, etc..
7. Plant food: cans of soy sauce, cooking wine, salt, and dressing equipment.
8. Most suitable for dilute sulfuric acid and strong corrosive medium
Surface Finish :
Surface finish | Characteristics and application |
No.2B | The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties, No2B could nearly satisfy comprehensive uses. |
No.3 | Polished with abrasive belt of git#100-#200, have better brightness with discontinuous coarse stria, used as inner and external ornaments for building, electrical appliances and kitchen utensils etc. |
No.4 | Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria, but thinner than No3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment etc. |
HL | Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous streaks, mainly used as buildings ornaments elevators, door of building, frontal plate etc. |
BA | Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror, kitchen apparatus, ornament etc. |
8K | The product have excellent brightness and prefer reflexivity can to be the mirror. |
- Q: Can stainless steel pipes be used for gas supply?
- Yes, stainless steel pipes can be used for gas supply. Stainless steel is known for its excellent corrosion resistance and high strength, making it a suitable material for transporting various gases, including natural gas and propane.
- Q: Are stainless steel pipes suitable for wastewater treatment plants?
- Yes, stainless steel pipes are suitable for wastewater treatment plants. Stainless steel is known for its excellent corrosion resistance, which is crucial in an environment where wastewater can contain aggressive chemicals and substances. Stainless steel pipes can withstand the high temperatures and pressures often encountered in wastewater treatment plants, making them a durable and reliable choice. Additionally, stainless steel pipes are easy to clean and maintain, reducing the risk of contamination in the treatment process. Therefore, stainless steel pipes are a popular choice for wastewater treatment plants due to their durability, corrosion resistance, and ease of maintenance.
- Q: Are stainless steel pipes suitable for water desalination plants?
- Indeed, water desalination plants find stainless steel pipes to be a suitable choice. This is because stainless steel possesses exceptional qualities such as resistance to corrosion, durability, and hygienic properties. These pipes display remarkable resistance against rust, corrosion, and scaling, guaranteeing a lengthy lifespan and minimal maintenance requirements. Furthermore, stainless steel pipes do not release any harmful substances into the water, ensuring their safety for use in desalination plants. Their robustness and ability to withstand high pressure also make them well-suited for handling the elevated pressure environments frequently encountered in water desalination processes. On the whole, stainless steel pipes offer a dependable and effective means of water transportation in desalination plants, thereby contributing to the generation of clean and safe drinking water.
- Q: Can stainless steel pipes be powder coated?
- Yes, stainless steel pipes can be powder coated. Powder coating is a method of applying a protective and decorative finish to metal surfaces. It involves applying a dry powder coating to the surface of the stainless steel pipes, which is then cured under heat, resulting in a durable and smooth coating. Powder coating is commonly used to enhance the appearance of stainless steel pipes, provide additional corrosion resistance, and protect against weathering and wear. However, it is important to note that stainless steel pipes must be properly prepared before powder coating to ensure adhesion and optimal results.
- Q: Are stainless steel pipes resistant to intergranular corrosion?
- Yes, stainless steel pipes are resistant to intergranular corrosion. Stainless steel contains a high amount of chromium, which forms a passive oxide layer on the surface of the metal. This oxide layer acts as a protective barrier, preventing the penetration of corrosive agents and inhibiting the occurrence of intergranular corrosion. Additionally, stainless steel pipes are often alloyed with elements such as molybdenum or titanium, which further enhance their resistance to intergranular corrosion. However, it is important to note that the resistance to intergranular corrosion may vary depending on the specific grade of stainless steel and the environmental conditions in which the pipes are exposed.
- Q: Can stainless steel pipes be used for sewage and wastewater systems?
- Indeed, sewage and wastewater systems can make use of stainless steel pipes. Stainless steel is renowned for its exceptional resistance to corrosion, rendering it highly suitable for water and sewage-related purposes. Its ability to withstand rust, corrosion, and chemical reactions ensures an extended lifespan while reducing the necessity for frequent replacements. Moreover, stainless steel pipes possess a smooth surface that hinders the accumulation of debris and facilitates effortless cleaning. Furthermore, stainless steel is impermeable, preventing the growth of harmful bacteria and fungi, thus contributing to its hygienic nature and suitability for sewage and wastewater systems. The durability, dependability, and capacity to withstand harsh environmental conditions make stainless steel pipes a favored choice for such applications.
- Q: How do stainless steel pipes compare to ductile iron pipes?
- When comparing stainless steel pipes to ductile iron pipes, there are several factors to consider. Firstly, stainless steel pipes have a higher resistance to corrosion compared to ductile iron pipes. This is due to the presence of chromium in stainless steel, which forms a protective layer on the surface of the pipe, preventing rust and corrosion. Ductile iron, on the other hand, is more prone to corrosion and may require additional coatings or linings to protect against it. Secondly, stainless steel pipes have a higher strength-to-weight ratio than ductile iron pipes. This means that stainless steel pipes can withstand higher pressure and have a longer lifespan, making them more durable and reliable. Ductile iron pipes are also strong, but they are generally heavier, which can make installation more challenging. Another important factor to consider is the cost. Stainless steel pipes tend to be more expensive than ductile iron pipes, primarily due to the higher cost of raw materials and manufacturing processes. However, the longer lifespan and lower maintenance requirements of stainless steel pipes can offset this initial cost, making them a cost-effective choice in the long run. In terms of versatility, stainless steel pipes offer more flexibility in terms of design and application. They can be easily welded, bent, and fabricated to meet specific requirements. Ductile iron pipes, on the other hand, have limited flexibility and are typically used for underground water and sewage systems. Overall, both stainless steel and ductile iron pipes have their own advantages and disadvantages. The choice between them will depend on factors such as the specific application, budget, and desired lifespan.
- Q: What is the difference between 304LN and 316LN stainless steel pipes?
- The composition and inclusion of certain elements distinguish 304LN and 316LN stainless steel pipes from each other. 304LN stainless steel is an austenitic type that contains a low amount of carbon and nitrogen. Its purpose is to provide better strength and corrosion resistance compared to standard 304 stainless steel. The addition of nitrogen encourages the formation of a stable austenite phase, which improves the mechanical properties of the material. On the contrary, 316LN stainless steel is also an austenitic variety but has molybdenum and a higher nickel content compared to 304LN. The inclusion of molybdenum increases the material's resistance to pitting corrosion caused by chlorides and other aggressive environments. The higher nickel content further enhances the corrosion resistance, making it suitable for more demanding applications, such as marine environments or chemical processing. In conclusion, both 304LN and 316LN stainless steel pipes are austenitic and offer good corrosion resistance. However, the addition of molybdenum and higher nickel content in 316LN makes it more suitable for applications requiring enhanced corrosion resistance, especially in aggressive environments.
- Q: What are the common standards used for manufacturing stainless steel pipes?
- The common standards used for manufacturing stainless steel pipes include ASTM A312/A312M, ASTM A269, and ASTM A790.
- Q: What is the difference between 17-4 and 316 stainless steel pipes?
- The main difference between 17-4 and 316 stainless steel pipes lies in their composition and properties. 17-4 stainless steel is a precipitation-hardening stainless steel that contains 17% chromium, 4% nickel, and 4% copper. It is known for its high strength, excellent corrosion resistance, and good toughness. This type of stainless steel is commonly used in applications that require high strength and resistance to wear and corrosion, such as aerospace components, industrial equipment, and oil and gas applications. On the other hand, 316 stainless steel is an austenitic stainless steel that contains 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. It is highly corrosion-resistant and has good heat resistance. 316 stainless steel pipes are widely used in industries that require resistance to chemicals, saltwater, and various corrosive environments, such as marine applications, chemical processing, and pharmaceutical equipment. In summary, while both 17-4 and 316 stainless steel pipes offer corrosion resistance, 17-4 is known for its high strength and toughness, making it suitable for demanding applications, whereas 316 stainless steel is preferred for its exceptional corrosion resistance, particularly in harsh environments.
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904l Stainless Steel Seamless Pipe in Wuxi ,China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 25000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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