The difference between SS 304 seamless tube and pipe is that SS 304 tubes have tighter dimensional tolerances and thinner walls. 304 pipes, on the other hand, have larger diameters and thicker walls for fluid transport.
ASTM A213 304 Stainless Steel Seamless Tube Manufacturer in China
We, Zhejiang Xintongda Special Steel (XTD), are a reliable Stainless steel 304 seamless tube manufacturer and a worldwide supplier since 1985. This tube is made from an austenitic stainless steel and contains 18.0-20.0% chromium and 8.0-11.0% nickel. We manufacture this 304 SS tube in compliance with the ASTM A213, A269, A511, and EN 10216 standards. This provides exceptional corrosion resistance and oxidation resistance, making it ideal where harsh service conditions are critical. It can withstand temperatures up to 870°C for intermittent service and 925°C in continuous oxidizing conditions. This makes it suitable for heat exchanger tubing. Our AISI 304 stainless steel tube has a smooth internal surface and low roughness, which makes it a preferred choice for high-precision applications. It is widely used in food & beverage, chemical processing, and other industries, which have been explained further. We hold multiple international certifications and have an annual supply capacity of 25,000 tons. We can offer 304 Stainless Steel seamless tube in custom lengths and deliver stock orders within a week.
We provide tubes that meet the following specifications:
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Standard
ASTM A213
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OD Range
6.35-257 mm
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Thickness
0.89-12.7 mm
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Length
≤ 22 m
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Technical Data
Technical Data
How is Stainless Steel 304 Seamless Tube Manufactured?
The manufacturing process of SS 304 seamless tube begins by heating a solid round steel billet and piercing it to create a hollow shell. Then cold drawing or cold rolling is used to achieve the precise diameter and wall thickness required. Finally, the tubes undergo heat treatment and pickling to ensure that quality standards are met. Visit our page to learn more about our detailed production process.
What are the Features of Stainless Steel 304 Tubes?
AISI 304 tube has 5 key characteristics:
- Excellent Corrosion Resistance: The high chromium and nickel content allows the 304 stainless steel tube to resist rust and oxidation. This protective layer ensures the metal stays durable even when exposed to moisture or mild acids.
- High Dimensional Accuracy: The manufacturing ensures that the tube fits very tight size and thickness standards. This is important for leak-proof connections in complex piping systems.
- Smooth Surface Finish: A smooth internal and external finish of the tube minimises friction and prevents material buildup inside. This makes cleaning easier and liquids flow more smoothly.
- Strong Mechanical Properties: The 304 tube provides high tensile strength and toughness for demanding jobs. It can handle high pressure without deforming. This makes it a reliable choice.
- High Temperature Resistance: This tube retains its strength and integrity at temperatures up to 870°C for intermittent service. This prevents it from scaling or weakening in heat-intensive environments.
ASTM A213 TP304 Seamless Tube Equivalent Material
The standard equivalent designation of SS 304 seamless tube is UNS S30400. Some other global equivalents include AISI 304, Werkstoff Nr. 1.4301, and JIS SUS 304.
| GRADE | UNS | GB | JIS | ISO | DIN/EN | GOST | |
| ISC | NEW | ||||||
| 304 | S30400 | S30408 | 06Cr19Ni10 | SUS304 | X5CrNi18-10 | 1.4301 | 08X18H10 |
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% PMI
- Heat Treatment Charts
- Third-Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain size, ET, UT, HT)
- Laboratory Test Certificate from the Government-Approved Lab
What are the Common Industrial Applications of 304 SS Seamless Tubing?
ASME SA213 TP 304 stainless steel tube is used in 7 demanding industries:
Food & Beverage
This tube is used for dairy piping and beverage filling lines because it is easy to sanitise. It does not react with food products. This ensures safety and hygiene.
Pharmaceutical
In cleanrooms SS 304 tube transfers high-purity fluids and medicinal ingredients. The smooth surface prevents bacterial growth and contamination during the production process.
Chemical Processing
The SUS 304 tube transports corrosive chemicals, acids, and alkalis through industrial plants. Its chemical stability prevents leaks and failure in aggressive environments.
Automotive
This tube is used for exhaust systems, mufflers, and catalytic converters. It can withstand the high heat and corrosive gases produced by vehicle engines.
Aerospace
The TP304 seamless stainless steel tube is used as hydraulic systems and fuel lines in aircraft. Its lightweight, yet strong nature allows it to deal with high-pressure fluids safely during flight.
Construction
304 SS tubing is used for structural handrails, supports, and decorative building facades. It offers a modern look and resists weathering when used outdoors.
Oil & Gas
The tubing is used in process piping to handle corrosive fluids in refineries. It provides a long service life in salt-heavy or humid offshore environments.
Questions related to SS 304 Tube
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What is the difference between SS 304 seamless tube and pipe?
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Are 304 Stainless Steel Tubes suitable for high-temperature use?Yes, 304 stainless steel tubes handle up to 925°C in continuous service.
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What is the difference between 316 and 304 stainless steel tubes?The difference between 316 and 304 stainless steel tubes is that 316 has molybdenum for better corrosion resistance in chlorides. 304 suits general use. Both offer similar strength, but 316 costs more.
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Will 304 steel tubes rust or corrode easily?304 tubes resist rust in mild environments but pit in chlorides or acids. Regular cleaning prevents corrosion buildup.
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What sizes are available for Stainless Steel 304 tubes?We, at XTD, provide SS 304 tubes in 6.35-257 mm for outside diameter, thickness range from 0.89-12.7 mm, and maximum lengths up to 22 m.
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What are the benefits of using 304 Stainless Tube?The benefits of using 304 stainless steel tubes are excellent corrosion resistance, easy welding, and formability.