Stainless Steel Seamless Tube
Stainless Steel Seamless Tube
Stainless steel seamless tubes are precision-engineered hollow cylinders manufactured from solid stainless steel billets without any welding or joints. This seamless structure ensures excellent strength, uniformity, and corrosion resistance. These tubes are ideal for critical applications in heat exchangers, instrumentation, boilers, condensers, and high-pressure systems where accuracy and reliability are essential.
Stellirox Tubular LLP is a trusted manufacturer and exporter of stainless steel seamless tubes, offering premium quality products designed to meet international standards such as ASTM, ASME, and DIN. Our seamless tubes are available in various grades, diameters, and finishes — ensuring outstanding performance, superior surface quality, and precise dimensional control for diverse industrial applications.
Specification Table
| Specification | Details |
|---|---|
| Product | Stainless Steel Seamless Tube |
| Standard | ASTM A213 / A269 / A632 / A789 |
| Size Range | OD: 1.6 mm to 101.6 mm |
| Wall Thickness | 0.5 mm to 12.7 mm |
| Length | Up to 6 Meters (Custom lengths available) |
| End Finish | Plain End, Beveled End, Threaded |
| Form | Round, Square, Rectangular, Coil Tube |
| Surface Finish | Annealed, Pickled, Polished, Bright Annealed (BA) |
Grade Comparison Table
| Grade | UNS Number | Equivalent Standards | Key Properties |
|---|---|---|---|
| 304 | S30400 | EN 1.4301 / JIS SUS304 | General-purpose grade with good corrosion resistance |
| 304L | S30403 | EN 1.4307 / JIS SUS304L | Low carbon for improved weldability |
| 316 | S31600 | EN 1.4401 / JIS SUS316 | Superior resistance to pitting and chloride attack |
| 316L | S31603 | EN 1.4404 / JIS SUS316L | Enhanced corrosion resistance and weld integrity |
| 321 | S32100 | EN 1.4541 / JIS SUS321 | Titanium stabilized for high-temperature use |
Client Comments
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Michael Roberts
We recently sourced stainless steel seamless tubes from Stellirox Tubular LLP for a condenser system. The SS 316L tubes showed excellent corrosion resistance and uniform wall thickness. The quality and dimensional accuracy were exceptional — ideal for our high-pressure heat exchanger project.
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Priya Sharma
Our company ordered SS 304L seamless tubes from Stellirox Tubular LLP for use in our food processing equipment. The hygienic surface finish and consistent polishing ensured excellent cleanliness. The tubes were perfectly straight and met all ASTM A269 specifications.
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David Patel
Stellirox Tubular LLP supplied us with SS 321 seamless tubes for our heat exchanger line. The tubes maintained integrity even under elevated temperatures and provided superior resistance to scaling. Excellent packaging and timely delivery made the experience even better.
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Hassan Ali
We purchased SS 316 seamless tubes from Stellirox Tubular LLP for our instrumentation systems. The smooth internal bore allowed excellent fluid flow and the precision tolerances simplified installation. Truly a reliable source for quality stainless steel tubing.
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Emily Carter
We’ve been sourcing seamless tubes from Stellirox Tubular LLP for over two years. Their SS 304 and 316L grades consistently meet our mechanical and surface finish requirements. Highly professional company with on-time delivery and responsive customer service.
Key Features- Excellent corrosion and oxidation resistance in various media
- Manufactured to meet ASTM, ASME, and DIN international standards
- Smooth internal surface ensures optimal flow and cleanliness
- High mechanical strength and pressure tolerance
- Tight dimensional tolerance and uniform wall thickness
- Available in various grades like 304, 304L, 316, 316L, 321, and more
- Suitable for high-temperature and high-pressure applications
- 100% tested — hydrostatic, eddy current, and ultrasonic inspection