904l Stainless Steel Seamless Pipe in Wuxi ,China
- Ref Price:
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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 insulated with polyethylene-co-methacrylate?
- No, stainless steel pipes cannot be insulated with polyethylene-co-methacrylate.
- Q: SA-179 what kind of material is steel pipe?
- Seamless steel pipe having a hollow cross section, used as a conduit for conveying fluids, such as pipelines for transporting petroleum, natural gas, gas, water, and certain solid materials.
- Q: Can stainless steel pipes be stress relieved?
- Yes, stainless steel pipes can be stress relieved. Stress relieving is a heat treatment process that helps to reduce residual stresses in the material, improving its mechanical properties and reducing the risk of cracking or distortion. This process can be applied to stainless steel pipes to enhance their performance and durability.
- Q: Can stainless steel pipes be used for chemical processing?
- Indeed, chemical processing can indeed utilize stainless steel pipes. One must acknowledge stainless steel's remarkable ability to resist corrosion, rendering it an apt material for handling a diverse range of chemicals. It effectively wards off both organic and inorganic substances, including acids, bases, and salts. Moreover, stainless steel pipes exhibit commendable strength, durability, and resistance to extreme temperatures, enabling them to endure the often severe conditions prevalent in chemical processing. In addition, their ease of maintenance and cleaning renders them a favored choice within the industry. Nevertheless, it remains crucial to carefully consider the specific requirements of the chemicals involved and seek counsel from experts to select the most suitable grade of stainless steel, ensuring optimal performance and safety.
- Q: What is the maximum temperature stainless steel pipes can withstand?
- The maximum temperature that stainless steel pipes can withstand depends on the specific grade of stainless steel used. Generally, stainless steel pipes can withstand high temperatures ranging from 1200°C to 1400°C (2200°F to 2550°F). However, it is important to note that the exact maximum temperature may vary based on factors such as the composition of the stainless steel, the duration of exposure to high temperatures, and the presence of any corrosive elements in the environment. It is always recommended to consult the manufacturer's specifications or a professional engineer for specific temperature limits for a particular grade of stainless steel pipe.
- Q: What is the difference between seamless and ERW stainless steel pipes?
- Seamless and ERW (Electric Resistance Welded) stainless steel pipes are two different types of pipes used in various applications. The main difference between these two types lies in their manufacturing process and physical characteristics. Seamless stainless steel pipes are manufactured without any welding seam. They are made by extruding a solid billet of stainless steel through a die to form the desired shape and size. This process ensures a smooth and uniform surface finish, with no weak points or potential areas for leakage. Seamless pipes are generally considered to have higher strength and pressure ratings, making them suitable for high-pressure applications such as oil and gas pipelines, refineries, and petrochemical plants. On the other hand, ERW stainless steel pipes are manufactured by rolling a strip of stainless steel into a tube shape and welding the edges together using a high-frequency electric current. This welding process creates a strong bond between the edges, resulting in a welded seam running along the length of the pipe. ERW pipes are more cost-effective compared to seamless pipes and are commonly used in applications where high pressure is not a major concern, such as plumbing, structural applications, and low-pressure fluid transport. In terms of physical characteristics, seamless pipes have a smoother interior surface, which allows for better flow properties and reduces the risk of corrosion or scaling. ERW pipes, due to the welding process, may have a slightly rougher interior surface, but this does not significantly impact their performance in most applications. It is important to consider the specific requirements of your project when choosing between seamless and ERW stainless steel pipes. Factors such as pressure ratings, corrosion resistance, cost, and intended use should all be taken into account to ensure the most suitable option is selected.
- Q: How is stainless steel pipe manufactured?
- Stainless steel pipe is manufactured through a process called pipe making. This process involves several steps that ensure the production of high-quality and durable stainless steel pipes. The first step in manufacturing stainless steel pipes is the selection of the raw materials. Stainless steel, which is a combination of iron, chromium, and other elements, is chosen for its corrosion-resistant properties. The specific grade and composition of stainless steel are carefully selected based on the intended application of the pipe. Once the raw materials are selected, they are melted in a furnace. This melting process is known as the electric arc furnace process. The stainless steel is heated to high temperatures, typically around 1700 degrees Celsius, to form a molten metal. After the molten metal is formed, it is transferred to a continuous casting machine. This machine helps in creating a solid cylindrical shape known as a billet. The billet is then transferred to a rolling mill where it is shaped into a seamless pipe. The rolling mill consists of multiple stands that gradually reduce the thickness and diameter of the billet. The billet is passed through these stands multiple times, with each pass reducing its size further. This continuous rolling process ensures the uniformity and consistency of the stainless steel pipe. Once the desired size is achieved, the pipe is cut to the required length. This is done using saws or other cutting tools. The ends of the pipe are then prepared for welding or other joining methods. In some cases, stainless steel pipes may undergo additional processes such as heat treatment or surface finishing. Heat treatment helps in improving the mechanical properties of the pipe, while surface finishing can provide enhanced aesthetics or corrosion resistance. Finally, the stainless steel pipes are inspected for quality and compliance with industry standards. This may involve various testing methods such as visual inspection, dimension and wall thickness measurement, non-destructive testing, and chemical analysis. Overall, the manufacturing of stainless steel pipes involves a combination of melting, casting, rolling, cutting, and inspection processes. These processes ensure the production of high-quality stainless steel pipes that are suitable for a wide range of applications including plumbing, construction, and industrial uses.
- Q: Can stainless steel pipes be used in pharmaceutical industries?
- Yes, stainless steel pipes can be used in pharmaceutical industries. Stainless steel is highly resistant to corrosion, easy to clean, and does not react with most chemicals, making it a suitable material for pharmaceutical applications where hygiene and product purity are crucial.
- Q: What is the internal roughness of stainless steel pipes?
- The internal roughness of stainless steel pipes refers to the texture or unevenness on the inner surface of the pipes, which can affect the flow of fluids or gases through the pipes. It is typically measured in terms of roughness coefficients or Ra values, indicating the average height of irregularities on the pipe's interior.
- Q: Are stainless steel pipes suitable for nuclear power plants?
- Yes, stainless steel pipes are suitable for nuclear power plants. Stainless steel is highly resistant to corrosion and can withstand high temperatures and pressures, making it an ideal material for transporting radioactive fluids in nuclear power plants.
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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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