Seamless Welded Stainless Steel U-Bent Tubes 1000mm for Heat Exchangers with 60 m/s Flow Rate and 100+ Year Lifespan
Our seamless welded stainless steel U-bent tubes are engineered for superior performance in heat exchanger applications. These tubes feature excellent mechanical properties, outstanding wear resistance, and a dense chromium-rich oxide film surface that provides exceptional corrosion resistance in all water types, including soft water and underground environments.
Unlike conventional bends that may corrode and withstand only 30 m/s water velocity, our stainless steel U-bent tubes resist corrosion and can handle water speeds up to 60 m/s, ensuring a service life exceeding 100 years.
These tubes serve dual purposes: providing structural support while enabling efficient long-distance transmission of liquid and gaseous materials. This dual functionality enhances industrial production efficiency and makes them ideal for various infrastructure applications.
| Grade | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Ni ≤ | Cr ≤ |
|---|---|---|---|---|---|---|---|
| 201 | 0.12 | 0.75 | 7.00 | 0.045 | 0.045 | 1.00-1.28 | 13.70-15.70 |
| 202 | 0.15 | 1 | 2.25 | 0.045 | 0.045 | 4.07-4.17 | 14.00-16.00 |
| 304 | 0.08 | 0.75 | 2 | 0.045 | 0.03 | 8.00-11.00 | 18.00-20.00 |
| 304L | 0.035 | 0.75 | 2 | 0.045 | 0.03 | 8.00-13.00 | 18.00-20.00 |
| 309 | 0.15 | 0.75 | 2 | 0.045 | 0.03 | 12.00-15.00 | 22.00-24.00 |
| 310S | 0.08 | 1.5 | 2 | 0.045 | 0.03 | 19.00-22.00 | 24.00-26.00 |
| 316 | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316L | 0.035 | 0.75 | 2 | 0.045 | 0.03 | 10.00-15.00 | 16.00-18.00 |
| 321 | 0.04-0.10 | 0.75 | 2 | 0.045 | 0.03 | 9.00-13.00 | 17.00-20.00 |
| DN (mm) | DN (in) | φ (mm) | SCH5S | SCH10S | SCH40S | STD | Sch40 | Sch80s | XS | Sch160 | XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 1/2 | 21.3 | 1.65 | 2.11 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 4.78 | 7.47 |
| 20 | 3/4 | 26.7 | 1.65 | 2.11 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 5.56 | 7.82 |
| 25 | 1 | 33.4 | 1.65 | 2.77 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 6.35 | 9.09 |
| 32 | 1 1/4 | 42.2 | 1.65 | 2.77 | 3.56 | 3.56 | 3.56 | 4.85 | 4.85 | 6.35 | 9.7 |
| 40 | 1 1/2 | 48.3 | 1.65 | 2.77 | 3.68 | 3.68 | 3.68 | 5.08 | 5.08 | 7.14 | 10.15 |
| 50 | 2 | 60.3 | 1.65 | 2.77 | 3.91 | 3.91 | 3.91 | 5.54 | 5.54 | 8.74 | 11.07 |
| 65 | 2 1/2 | 76 | 2.11 | 3.05 | 5.16 | 5.16 | 5.16 | 7.01 | 7.01 | 9.53 | 14.02 |
| 80 | 3 | 88.9 | 2.11 | 3.05 | 5.49 | 5.49 | 5.49 | 7.62 | 7.62 | 11.13 | 15.24 |
| 100 | 4 | 114.3 | 2.11 | 3.05 | 6.02 | 6.02 | 6.02 | 8.56 | 8.56 | 13.49 | 17.12 |
| 150 | 6 | 168.3 | 2.77 | 3.4 | 7.11 | 7.11 | 7.11 | 10.97 | 10.97 | 18.26 | 21.95 |
| 200 | 8 | 219.1 | 2.77 | 3.76 | 8.18 | 8.18 | 8.18 | 12.7 | 12.7 | 23.01 | 22.23 |
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