Stainless Steel Seamless Pipe
Stainless Steel Seamless Pipe
Stainless steel seamless pipes are manufactured from solid stainless steel billets, which are heated and then extruded or drawn over a form to create a hollow tube without any welding joints. This results in superior mechanical strength, corrosion resistance, and the ability to withstand high pressure and temperature environments. Seamless pipes are widely used in industries such as oil & gas, petrochemical, power generation, and marine engineering due to their reliability and long service life.
These pipes are available in various grades, sizes, and finishes to meet the specific needs of different applications. Common stainless steel grades include 304, 304L, 316, 316L, and 321, each offering unique properties suited for different environmental conditions. Stainless steel seamless pipes are preferred for critical applications where consistent structure, precision, and leak-free performance are essential.
Specification Table
| Specification | Details |
|---|---|
| Product | Stainless Steel Seamless Pipe |
| Standard | ASTM A312 / A213 / A269 / A790 / A376 |
| Size Range | 1/8” NB to 24” NB (Nominal Bore) |
| Wall Thickness | Schedule 5S, 10S, 20S, 40S, 80S, 160S, XXS |
| Length | Single Random, Double Random & Custom Lengths |
| End Finish | Plain End, Beveled End, Threaded |
| Form | Round, Square, Rectangular, Hydraulic |
| Surface Finish | Annealed, Pickled, Polished, Bright |
Grade Comparison Table
| Grade | UNS Number | Equivalent Standards | Key Properties |
|---|---|---|---|
| 304 | S30400 | EN 1.4301 / JIS SUS304 | Good corrosion resistance and weldability |
| 304L | S30403 | EN 1.4307 / JIS SUS304L | Low carbon, improved weld resistance |
| 316 | S31600 | EN 1.4401 / JIS SUS316 | Excellent corrosion resistance, especially to chlorides |
| 316L | S31603 | EN 1.4404 / JIS SUS316L | Low carbon version of 316 with enhanced weldability |
| 321 | S32100 | EN 1.4541 / JIS SUS321 | Titanium stabilized, high-temperature resistance |
Client Comments
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John Womble
We recently sourced stainless steel seamless pipes from Stellirox Tubular LLP for a petrochemical project. The ASTM A312 TP316L grade performed exceptionally well under high pressure and temperature. The pipes had precise dimensions, excellent surface finish, and superior corrosion resistance — exactly what our project required.
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Sarah Miller
Our team purchased SS 304L seamless pipes from Stellirox Tubular LLP for our pharmaceutical facility. The product quality and consistency exceeded our expectations. The seamless finish ensured clean flow and minimized contamination — perfect for hygienic applications.
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David Patel
Stellirox Tubular LLP supplied us with SS 321 seamless pipes for our refinery system. The titanium-stabilized material provided outstanding high-temperature performance and resistance to intergranular corrosion. Their technical support team was also very helpful during our installation phase.
Key Features- Superior corrosion resistance for harsh industrial environments
- Manufactured as per ASTM, ASME, and DIN international standards
- Leak-proof construction with high dimensional accuracy
- Available in multiple grades – 304, 304L, 316, 316L, 321, and more
- Smooth internal finish for better fluid flow and cleanliness
- Excellent mechanical strength and pressure handling capacity
- Custom lengths and surface finishes available on request
- Supported by dedicated quality inspection and testing team