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
You Might Also Like
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: What are the advantages of using stainless steel pipes in the oil and gas industry?
- There are several advantages of using stainless steel pipes in the oil and gas industry. 1. Corrosion resistance: Stainless steel pipes are highly resistant to corrosion, making them ideal for transporting oil and gas. They can withstand extreme temperatures, harsh chemicals, and corrosive environments, ensuring long-term durability and preventing costly repairs or replacements. 2. Strength and durability: Stainless steel pipes have high tensile strength, which means they can withstand heavy loads and high-pressure environments. This characteristic makes them suitable for transporting oil and gas over long distances, as they can handle the required stress without compromising their structural integrity. 3. Hygienic and clean: Stainless steel pipes are non-porous and have a smooth surface, making them resistant to bacterial growth and minimizing the risk of contamination. This is crucial in the oil and gas industry, where maintaining the purity and quality of the transported fluids is paramount. 4. Heat resistance: Stainless steel pipes can handle high temperatures without deformation or degradation. They are capable of withstanding the extreme heat generated during the extraction, refining, and transportation processes in the oil and gas industry. 5. Flexibility and adaptability: Stainless steel pipes can be easily modified or customized to meet specific requirements. They can be welded, bent, or shaped into various configurations without compromising their strength or integrity. This flexibility allows for efficient installation and reduces the need for additional connectors or fittings. 6. Longevity and cost-effectiveness: Stainless steel pipes have a long lifespan, often exceeding 50 years, when properly maintained. This longevity reduces the frequency of replacements and repairs, minimizing downtime and overall costs in the oil and gas industry. 7. Environmental sustainability: Stainless steel is a highly recyclable material, making it an environmentally friendly choice. When stainless steel pipes reach the end of their life cycle, they can be easily recycled and used to manufacture new products, reducing waste and conserving resources. In summary, the advantages of using stainless steel pipes in the oil and gas industry include corrosion resistance, strength and durability, hygienic and clean properties, heat resistance, flexibility and adaptability, longevity and cost-effectiveness, as well as environmental sustainability. These benefits make stainless steel pipes a reliable and efficient choice for transporting oil and gas, ensuring the integrity and safety of the operations.
- Q: Can stainless steel pipes be used for cryogenic storage tanks?
- Yes, stainless steel pipes can be used for cryogenic storage tanks. Stainless steel is known for its high strength, corrosion resistance, and low thermal conductivity, making it suitable for handling extremely low temperatures required for cryogenic storage.
- Q: Do stainless steel pipes require any special maintenance?
- Yes, stainless steel pipes require minimal maintenance due to their high resistance to corrosion. However, regular cleaning and inspections are recommended to ensure optimal performance and longevity.
- Q: What is the difference between Schedule and Nominal Pipe Sizes for stainless steel pipes?
- The difference between Schedule and Nominal Pipe Sizes for stainless steel pipes lies in their respective measurements. Schedule refers to the wall thickness of the pipe, while Nominal Pipe Size (NPS) indicates the approximate inside diameter of the pipe. The Schedule system is based on a standard thickness range, denoted by a specific number, such as Schedule 40 or Schedule 80, which are commonly used in industrial applications. On the other hand, NPS provides a standardized label for pipes that corresponds to a specific inside diameter, regardless of the wall thickness. Therefore, while Schedule determines the strength and pressure rating of a stainless steel pipe, NPS primarily denotes its size for compatibility with fittings and other components.
- Q: Can stainless steel pipes be used for steam systems?
- Stainless steel pipes are indeed suitable for steam systems due to their remarkable resistance to corrosion and high temperatures. This material is renowned for its ability to carry steam without deteriorating or corroding, thus ensuring the efficiency and safety of the steam system. Moreover, stainless steel pipes possess low thermal conductivity, which aids in reducing heat loss during the transportation of steam. Consequently, these pipes are highly favored in diverse industries for their durability, reliability, and long lifespan.
- Q: How do you prevent stress corrosion cracking in stainless steel pipes?
- One way to prevent stress corrosion cracking in stainless steel pipes is to ensure proper material selection. Using stainless steel grades that are resistant to stress corrosion cracking, such as duplex or super duplex stainless steel, can significantly reduce the risk. Additionally, maintaining a suitable environment by controlling temperature, pH levels, and exposure to corrosive substances can also help prevent stress corrosion cracking. Regular inspection and maintenance, including cleaning and passivation, can further enhance the integrity and durability of stainless steel pipes, minimizing the chances of stress corrosion cracking.
- Q: What are the common corrosion issues with stainless steel pipes?
- The common corrosion issues with stainless steel pipes include pitting corrosion, crevice corrosion, and stress corrosion cracking. Pitting corrosion occurs in localized areas, leading to the formation of small pits on the pipe surface. Crevice corrosion occurs in gaps or crevices, such as at pipe joints or under deposits, leading to localized corrosion. Stress corrosion cracking is a form of corrosion caused by a combination of tensile stress and a corrosive environment, resulting in cracking of the pipe.
- Q: Can stainless steel pipes be used for chemical storage tanks?
- Indeed, stainless steel pipes have the capability to serve as chemical storage tanks. Renowned for its exceptional resistance to corrosion, stainless steel proves to be an optimal substance for the containment of chemicals. An extensive array of chemicals, such as acids, alkalis, solvents, and gases, face no challenge in penetrating its defenses. Furthermore, stainless steel boasts durability and strength, guaranteeing the structural integrity of the storage tanks. Moreover, its effortless cleaning and maintenance render it suitable for housing various types of chemicals. Nevertheless, one must exercise caution and thoroughly consider the specific properties and demands of the chemicals before opting for stainless steel pipes as chemical storage tanks.
- Q: What is the difference between seamless and double submerged arc welded stainless steel pipes?
- Seamless stainless steel pipes are produced by rolling a solid cylindrical billet of stainless steel after it has been pierced, ensuring a smooth surface without any welds or seams. This manufacturing process gives the pipes higher strength and corrosion resistance due to the absence of potential weak points created by welding. On the other hand, double submerged arc welded stainless steel pipes are made by aligning and welding two separate steel plates using a submerged arc welding process. This welding method uses a flux to protect the weld area from atmospheric contamination. The plates are then joined together to form a pipe by passing them through rollers. These pipes have a visible weld seam along their length. Seamless stainless steel pipes are preferred in applications where high pressure, high temperature, or corrosive environments are present. They eliminate the risk of leakage and enhance the overall structural integrity of the pipe. In contrast, double submerged arc welded stainless steel pipes are often chosen for their cost-effectiveness. They are less expensive to produce compared to seamless pipes and are commonly used in industries such as oil and gas, petrochemical, and water distribution. In conclusion, the main difference between seamless and double submerged arc welded stainless steel pipes lies in their manufacturing process and resulting characteristics. Seamless pipes have a smooth and continuous surface without any welds or seams, while double submerged arc welded pipes have a visible weld seam. The choice between these types of pipes depends on factors such as cost, application requirements, and the desired level of strength and corrosion resistance.
- Q: Are stainless steel pipes resistant to sulfide stress corrosion cracking?
- Generally, stainless steel pipes exhibit resistance to sulfide stress corrosion cracking (SSC). This is due to the high chromium content in stainless steel, which leads to the formation of a protective oxide layer on the material's surface. This oxide layer acts as a barrier against corrosive substances, including sulfides, preventing their penetration into the steel. Furthermore, stainless steel pipes are often alloyed with other elements such as molybdenum and nickel, which further enhance their corrosion resistance. However, it is crucial to note that the degree of resistance to SSC can vary based on the specific grade and composition of stainless steel utilized. Consequently, it is vital to select the appropriate stainless steel grade specifically designed to withstand sulfide stress corrosion cracking in the desired application.
Send your message to us
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
Similar products
Hot products
Hot Searches
Related keywords
