304 Stainless Steel Welded Tube Supplier
- Size Range: From 4mm4mm to 800mm800mm
- Wall Thickness Range: From 1mm to 150mm (SCH10-XXS)
- Length Options: 4000mm, 5800mm, 6000mm, 12000mm, or as required.
- Finish: 2B, BA,4K,8K, NO.1,2D,3#,HL
- Type: Round, square, rectangular, hexagonal, flat, angle
- Technique: Cold rolled hot rolled
Product Description of 304 Stainless Steel Welded Tube
304 stainless steel welded tubes are highly versatile and widely used in various industries. Made from high-quality 304 stainless steel, these tubes offer excellent corrosion resistance, durability, and superior performance in demanding environments.
The tubes are produced through a precise welding process, ensuring strong and consistent joints. This results in a seamless appearance and uniform structural integrity throughout the tube length.
The 304 stainless steel composition, which includes chromium and nickel, provides exceptional resistance to corrosion, oxidation, and chemicals, making these tubes suitable for both indoor and outdoor applications. They can withstand high temperatures and maintain their strength and shape over time.
Whether it’s for structural support, fluid transportation, or decorative purposes, 304 stainless steel welded tubes offer reliable performance and long-lasting durability. Their versatility, corrosion resistance, and aesthetic appeal make them a preferred choice for many applications.
As leading stainless steel tube suppliers, we provide high-quality 304 stainless steel welded tubes that meet industry standards and customer specifications. Our commitment to quality and customer satisfaction ensures that you receive top-notch products for your project needs. Contact us today for more information and to discuss your specific requirements.
Specification of 304 Stainless Steel Welded Tube
304 Grade Description in Different Standards
ISO Name | ASTM | DIN / EN | JIS | GB | Other |
X5CrNi18-10 | S30400 / 304 | 1.4301 | SUS304 | S30408/ | 06Cr19Ni10 0Cr18Ni9 |
304 Grade Chemical Components in the Different Standards
304 | C % | Si % | Mn % | P % | S % | Ni % | Cr % | Mo % | N % | Cu % |
ASTM | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 8.0 – 10.5 | 18.0 – 20.0 | – | 0.10 | – |
DIN/EN | 0,07 | 1,00 | 2,00 | 0,045 | 0,015 | 8,0 – 10,5 | 17,5 – 19,5 | – | 0,10 | – |
JIS | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 8.0 – 10.5 | 18.0 – 20.0 | – | – | – |
GB | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 8.0 – 10.0 | 18.0 – 20. 0 | – | – | – |
304 Mechanical Properties in Different Standards
304 | Y.S./Mpa ≥ | T.S./Mpa ≥ | E.L./% ≥ | HB ≤ | HRB ≤ | HBW ≤ | HV ≤ |
ASTM | 205 | 515 | 40 | – | 92 | 201 | – |
JIS | 205 | 520 | 40 | 187 | 90 | – | 200 |
GB | 205 | 515 | 40 | – | 92 | 201 | 210 |
304 Physical Properties in Different Standards
| 304 | Density (g/cm³) | Melting point (℃) | Thermal conductivity (W/m-K) | Coefficient of thermal expansion (10^-6/K) | Elastic Modulus(GPa) | Poisson’s Ratio |
| ASTM | 7.93 | 1398-1454 | 16.2-24.9 | 17.3-17.8 | 200 | 0.3 |
| JIS | 7.93 | 1398-1454 | 16.2-24.9 | 17.3-17.8 | 193 | 0.3 |
| EN | 7.9 | 1400-1450 | 15-21.5 | 17.0-17.5 | 193 | 0.3 |
| GB | 7.9 | 1398-1454 | 16.2-24.9 | 17.3-17.8 | 193 | 0.3 |
Features of 304 Stainless Steel Welded Tube
304 stainless steel welded tube has excellent corrosion resistance, making it highly desirable in a wide range of applications. It resists the effects of corrosion and oxidation, both in the marine environment and in the chemical industry. Its main composition is 18% chromium and 8% nickel, a chemical combination that gives it excellent corrosion resistance and the ability to retain its original appearance and properties over time. The corrosion resistance of 304 stainless steel welded tubes can be further enhanced by surface treatments such as electroplating, polishing and sandblasting. Whether in chemical plants, marine engineering, food processing or medical equipment, 304 stainless steel welded tube maintains its excellent corrosion resistance, providing users with reliable, safe piping systems.
304 stainless steel welded tube is known for its outstanding durability. Thanks to its high strength and excellent corrosion resistance, 304 stainless steel welded tube can be used for a long time under a variety of harsh environmental conditions without failure. It resists daily wear, impact and deformation, maintaining its stable shape and structure. Whether in high temperature, high pressure or low temperature environments, 304 stainless steel welded tube exhibits excellent performance. Its durability is also due to the high purity and uniformity of its material, allowing it to withstand extreme operating conditions and critical structural requirements.
304 stainless steel welded tube has excellent welding properties, making it a widely used pipeline material. Its welding performance is mainly manifested in the following aspects. First, 304 stainless steel has good weldability and can be connected by various common welding methods, such as TIG (argon arc welding), MIG (inert gas shielded welding), resistance welding, etc. Secondly, 304 stainless steel welded tube has a low thermal conductivity and coefficient of thermal expansion, making it easier to control temperature and shape changes during the welding process and reducing the risk of welding deformation. In addition, the high weld strength of 304 stainless steel tubes provide a reliable welded joint with good sealing properties. Whether in high or low temperature environments, the welded seam of 304 stainless steel welded tube is able to maintain stable performance and is less prone to cracking and gas leakage.
304 stainless steel welded tube is known for its outstanding high strength, making it ideal for many applications. 304 stainless steel tube has high yield and tensile strengths, allowing it to withstand high forces and pressures. Its high strength characteristics allow 304 stainless steel welded tube to maintain consistent performance under a variety of harsh environments and operating conditions. Whether at high or low temperatures, 304 stainless steel welded tube is capable of withstanding extreme working conditions with excellent endurance and fatigue resistance.
Application of 304 Stainless Steel Welded Tube
oil and gas industry
In the oil and gas extraction process, 304 stainless steel welded tubes are used in well pipes and production pipelines. These tubes need to have excellent corrosion resistance and be able to withstand liquids and gases containing hydrogen sulfide, brine and other corrosive substances. In addition, they need to have high strength and pressure resistance to withstand high pressures and harsh operating environments. In addition to its application in oil and gas extraction, 304 stainless steel welded tube is also widely used in the manufacture of petrochemical equipment. For example, in refineries and refining units, these pipes are used to transport and process a variety of chemicals. They are also used in offshore platforms and subsea pipeline systems to ensure the safe transportation of oil and gas. Working with stainless steel tube suppliers, the oil and gas industry can obtain 304 stainless steel welded pipe that meets industry standards and requirements.
chemical industry
In the chemical industry, 304 stainless steel welded tube is widely used to transport various chemicals and handle different process fluids. They have excellent corrosion resistance to various corrosive media such as acids, alkalis, salts, etc. This is crucial for the chemical industry, as various chemical reactions and substance handling are involved in the production process, and reliable and durable pipes are needed to ensure the safety and stability of production. In addition, 304 stainless steel welded tube has good mechanical properties, such as high strength and pressure resistance. This allows them to withstand the high pressures and high temperature conditions common in the chemical industry. In chemical equipment and process systems, these pipes are commonly used to transport steam, gases, liquids and other process media, ensuring their safe and reliable transportation. Working with stainless steel tube suppliers can result in 304 stainless steel welded pipes that meet the standards and requirements of the chemical industry.
food industry
Hygiene and safety are of paramount importance in the food industry. 304 stainless steel welded tube is often used in the process of conveying food and beverages such as milk, juices, alcoholic beverages, edible oils, etc. These tubes ensure the purity of the food without any negative impact on the taste, quality and safety of the food. In addition, 304 stainless steel welded tube has good mechanical properties such as high strength and pressure resistance to withstand the high pressure and high temperature conditions common in the food industry. They can be used in various food processing and manufacturing processes, such as food filling lines, food heating equipment, food conveying systems, etc. The tube is also resistant to chemicals and acidic and alkaline media commonly found in food, ensuring food safety and quality. Working with stainless steel tube suppliers can result in 304 stainless steel welded tubes that meet the standards and requirements of the food industry.
pharmaceutical industry
The pharmaceutical industry has very strict health and safety requirements. 304 stainless steel welded tubes are widely used in pharmaceutical processes, such as drug production, liquid delivery, and pharmaceutical equipment. They ensure the purity of fluids in pharmaceutical processes without any negative impact on the purity, quality and safety of drugs. 304 stainless steel welded tubes also have excellent mechanical properties such as high strength and pressure resistance to withstand the high pressure and temperature conditions common in the pharmaceutical industry. They are resistant to chemicals and corrosive media such as acids, alkalis, solvents, etc., which are common in pharmaceutical processes. These pipes also have good sealing properties, ensuring that there is no risk of leakage and cross-contamination in the pharmaceutical process. Working with stainless steel tube suppliers can result in welded 304 stainless steel tubes that meet pharmaceutical industry standards and requirements.
automotive manufacturing industry
In the automotive manufacturing process, 304 stainless steel welded tubes are widely used in key components of automotive exhaust systems, air intake systems and fuel systems. These tubes need to be resistant to high temperatures, corrosion and high strength in order to meet the automotive industry's stringent requirements for safety, reliability and performance. 304 stainless steel welded tubes have excellent corrosion resistance and can resist the high temperature corrosive gases and humidity generated in the automotive exhaust system. They are able to withstand the high temperature environment in the exhaust system, maintaining the structural stability and long-term reliability of the pipe. In addition, 304 stainless steel welded tubes are resistant to chemicals and corrosive media in fuel systems, ensuring the safe transportation and storage of fuel. Working with stainless steel tube suppliers can result in 304 stainless steel welded tubes that meet automotive industry standards and requirements.
FAQ
304 stainless steel welded tube and 316 stainless steel welded tube are two commonly used stainless steel materials, and there are some differences between them:
Chemical Composition: 304 stainless steel is mainly composed of 18% chromium and 8% nickel, while 316 stainless steel contains 16% chromium, 10% nickel and 2% molybdenum. The addition of molybdenum gives 316 stainless steel better corrosion resistance.
Corrosion Resistance: 316 stainless steel has higher corrosion resistance compared to 304 stainless steel, especially for salt water environment and acidic conditions.
Corrosion Resistance to Chloride: 316 stainless steel has better corrosion resistance in chloride environment, so it is often used in seawater treatment equipment and chemical engineering fields.
Heat Resistance: 316 stainless steel has better resistance to high temperatures and is able to maintain its mechanical properties and corrosion resistance at higher temperatures.
304 stainless steel welded tube can be connected in a variety of ways, the common ones include the following:
Welded Connection: The tube and pipe fittings are connected using welding methods, such as TIG (argon arc welding), MIG (inert gas shielded welding), etc. This connection method has high strength and sealing, suitable for demanding working environments.
Threaded Connections: Threaded fittings are threaded to the pipe threads, usually using threaded fittings and sealing gaskets to ensure a tight connection. This type of connection is suitable for low pressure and non-critical areas of the piping system.
Ferrule Connection: The pipe and fittings are held together using ferrules and clamps to tightly connect them by pressure. This type of connection is suitable for applications requiring frequent disassembly and installation.
Elbow Connection: Elbow fittings are used to connect the pipe at locations where a turn or change in flow direction is required. Elbows can be selected with different angles and radii as needed.
Flange Connection: The pipe is connected to the fittings by means of a flange, usually using bolts and sealing washers to secure and seal the connection. This type of connection is suitable for high pressure and large-diameter piping systems.
Mechanical Polishing: Use mechanical equipment, such as polishing machines, grinding wheels, etc., to polish and buff the surface of the welded pipe. This method removes weld marks, scratches and oxides, and obtains a smoother surface.
Pickling Treatment: By soaking the welded tube in acidic solutions, such as nitric acid and hydrochloric acid, oxides, slag and dirt in the welded area can be removed and the surface can be restored to a smooth finish.
Electrolytic Polishing: The welded pipe is polished using an electrolytic solution and the action of electric current. This method can obtain a uniform polishing effect and remove surface imperfections and oxidation layers.
Sandblasting: Fine grit is blasted onto the surface of the welded pipe using high-pressure air or a sandblaster to remove dirt, oxidation and scratches. Sandblasting can give a rough or textured surface finish.
Chemical Treatment: Surface treatment and cleaning of welded tubes using chemical solutions, such as acidic cleaners and degreasers, to remove dirt and oxides.
It is recommended to consult professional stainless steel welded tube suppliers or related professionals for more detailed and accurate treatment recommendations.
Good Corrosion Resistance: 304 stainless steel tube has excellent corrosion resistance and is able to resist common corrosive media, including acidic, alkaline and salt water, and is suitable for a variety of harsh environments.
High Strength: 304 stainless steel tube has high strength and tensile properties, able to withstand large pressures and loads, with good structural stability.
Excellent Processability: 304 stainless steel tube is easy to process and shape, and can be processed in a variety of ways, such as welding, bending, cutting and cold working, to meet the requirements of different shapes and sizes.
Good Weldability: 304 stainless steel tube can be connected by common welding methods, such as TIG welding, MIG welding and resistance welding, etc. The welded joints are strong and reliable.
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