304 precision seamless tube is a seamless tube made of stainless steel material (mainly 304 stainless steel), with high precision and good surface quality. It is mainly used in fields that require high precision dimensions, tolerances and surface finish, such as chemical, food, medicine, electronics, aviation, machinery manufacturing and other industries. 304 stainless steel is a common austenitic stainless steel. Due to its good corrosion resistance and processability, it is widely used in various types of pipelines and structural materials. The following carefully summarizes the characteristics, applications, processes and other aspects of 304 precision seamless tubes:
Characteristics of 304 precision seamless tube
1. Strong corrosion resistance: 304 stainless steel has excellent corrosion resistance, especially in corrosive environments such as moisture, air, and chemical environments.
2. Precision size: The manufacturing process of precision seamless tube is sophisticated, and the outer diameter and wall thickness have a small tolerance range, which is usually controlled within a strict dimensional error range and can meet high precision requirements.
3. Smooth surface: The surface finish of 304 precision seamless tubes is high and smooth, which avoids the accumulation of pollution caused by rough surface.
4. Good mechanical properties: 304 stainless steel has high strength and toughness, suitable for high-intensity and high-pressure working environments.
5. High temperature resistance: 304 stainless steel has good high temperature resistance, the long-term working temperature can reach 870°C, and it can withstand high temperatures up to 925°C in a short period of time.
6. Corrosion and oxidation resistance: 304 stainless steel has strong oxidation and corrosion resistance, and is especially suitable for environments that require high acid and alkali resistance.
Specifications of 304 precision seamless tube
Outer diameter range: generally ranging from 6mm to 325mm, the outer diameter of precision tubes for some special applications can be smaller or larger.
Wall thickness range: usually from 0.3mm to 20mm, but the specific wall thickness range also depends on the use requirements and production process.
Length: The common length is 6 meters, which can be customized under special circumstances.
Production process of 304 precision seamless tube
1. Material selection: The raw materials of 304 stainless steel pipes are made of high-quality stainless steel plates and strips to ensure uniform composition and stable performance of the steel pipes.
2. Hot-rolled or cold-drawn: 304 precision seamless tubes are usually made by cold-drawn or hot-rolled processes. Cold-drawn steel pipes are formed by cold working to ensure dimensional accuracy and surface quality.
3. Annealing treatment: The steel pipe after cold drawing needs to be annealed to eliminate cold working stress and improve the mechanical properties and corrosion resistance of the pipe.
4. Precision machining: The outer diameter, wall thickness and length of precision seamless tubes have high accuracy requirements, so strict dimensional control and surface machining are required to achieve high precision requirements.
5. Testing and Inspection: Strict quality control is carried out at every stage of the production process, including appearance inspection, dimensional measurement, and non-destructive testing (such as ultrasonic testing, X-ray testing, etc.) to ensure that the quality and performance of the steel pipes meet the standards.
Advantages of 304 precision seamless tube
1. High precision: Due to the use of precision machining technology, the dimensional tolerance and surface finish of 304 precision seamless tubes are very high, meeting the needs of precision applications.
2. Strong corrosion resistance: 304 seamless steel tubes can maintain long-term stability in harsh chemical and corrosive environments.
3. High temperature resistance: It can still maintain good mechanical properties under high temperature conditions and is not easy to deform and corrode.
4. Good processability: 304 stainless steel pipe has good processability and is suitable for various processing such as bending, welding and cutting.
Factors affecting the market price of 304 precision seamless tube
1. Raw material cost: Fluctuations in the price of raw materials for 304 stainless steel (such as nickel, chromium and other alloy elements) will directly affect the production cost of steel pipes.
2. Market demand: Changes in demand in different industries will also affect prices, especially when demand fluctuates greatly in industries such as chemicals, food and medicine.
3. Production process: The cold drawing process requires higher precision and processing equipment than the hot rolling process, and the price is usually higher.
4. Pipeline specifications: Precision seamless steel tubes of different specifications (such as small diameter, large wall thickness, etc.) have different prices due to different process complexities.
5. Transportation costs: The transportation costs of steel pipes will also affect the final selling price, especially when transporting them over long distances and purchasing in large quantities.
Application fields of 304 precision seamless tube
1. Chemical industry: 304 precision seamless tubes are widely used in pipelines, heat exchangers, pressure vessels and other components in the chemical industry to transport highly corrosive liquids or gases.
2. Food and beverage industry: Because it meets food hygiene standards, 304 stainless steel pipes are often used for pipeline transportation in food processing and beverage production lines.
3. Pharmaceutical industry: 304 stainless steel pipes are widely used in pharmaceutical equipment and drug delivery systems because their material does not react with drugs and is easy to clean.
4. Mechanical manufacturing: used to manufacture high-precision mechanical parts and equipment to ensure the stability and service life of the equipment.
5. Aerospace: In the aerospace industry, 304 precision seamless tubes are used to make ducts, cooling pipes, structural parts, etc., meeting the high requirements for strength and corrosion resistance.
6. Automobile industry: 304 stainless steel pipes are often used in automobile exhaust pipes, cooling pipes and fuel pipe systems.
Read more: How to ldentify the Quality of Cold Drawn Seamless Steel Pipes?
