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Stainless steel boiler tubing carries heat through a system that rarely gives it a break, and the way it holds steady under the push of high pressure and harsh temperature swings is what makes it so central to modern boilers and heat exchangers. These tubes stay tough and their resistance to corrosion and oxidation, next to their ability to handle thermal strain, creates a kind of quiet reliability that operators learn to trust. Neeka Tubes, a name that tends to come up whenever engineers compare long-term performance under rough conditions, keeps supplying these tubes with a level of consistency that is hard to ignore, and our steady approach creates confidence even in plants that usually question every small detail. And operators return to us because the tubes stay dependable even when the environment tries to push them past their limit, which is why our presence in the energy and manufacturing sectors keeps growing in quiet but noticeable steps. We also provide you with the choice between seamless and welded forms. Both of them are used in different ways, shaped by how the plant is built and how much movement the system sees across a day.

Features of Stainless Steel Boiler Tubing
Our Stainless Steel Boiler Tube is crucial in industries requiring high temperatures and pressures. It plays an important role in power plants, chemical industries, refineries and food processing. Its main function is to transform heat from burning gases into steam or water while maintaining structural integrity under high pressure.




| Standard Specification | ASTM A249, A269, A554, A270 Stainless Steel Boiler Tube |
| Technique | Hot rolled, Cold rolled, Cold drawn, Extrusion Tube |
| Schedule | SCH10, SCH 80, SCH 5, SCH 160, SCH 40, SCH XXS, SCH 80S, SCH XS, |
| Size |
|
| Surface Finish | 2B, No.1, Mirror Finish, No.4, No.8 |
| END | Beveled End, Plain End, Treaded |
| Processing Service | Welding, Decoiling, Cutting, Bending, Punching, Moulding |
| Grade | Silicon | Manganese | Molybdenum | Carbon | Phosphorus | Sulfur | Nickel | Nitrogen | Chromium | |
| 304 | min. | 8.0 | 18.0 | |||||||
| max. | 0.75 | 2.0 | 0.08 | 0.045 | 0.030 | 10.5 | 0.10 | 20.0 | ||
| 304L | min. | 8.0 | 18.0 | |||||||
| max. | 0.75 | 2.0 | 0.030 | 0.045 | 0.030 | 12.0 | 0.10 | 20.0 | ||
| 316 | min. | 2.03.0 | 10.0 | 16.0 | ||||||
| max. | 0.75 | 2.0 | 0.035 | 0.045 | 0.030 | 14.0 | 18.0 | |||
| 316L | min. | 2.03.0 | 10.0 | 16.0 | ||||||
| max. | 0.75 | 2.0 | 0.035 | 0.045 | 0.030 | 14.0 | 18.0 | |||
| Grade | Melting Point Β°C | Density g/cm3 | Yield Strength | Tensile Strength | Elongation |
| 304/ 304L | 1400 | 8.0 | Psi 30000 MPa 205 | Psi 75000 MPa 515 | 35 |
| 316L | 1399 | 8.0 | Psi 30000 MPa 205 | Psi 75000 MPa 515 | 35 |
| Standard | Unified Numbering System | Werkstoff Nr. | European Standards | Japanese Industrial Standards | GOST | British Standards | AFNOR |
| 304 | S30400 | 1.4301 | X5CrNi18-10 | SUS 304 | 08Π₯18Π10 | 304S31 | Z7CN18β09 |
| 304L | S30403 | 1.4306 / 1.4307 | X2CrNi18-9 / X2CrNi19-11 | SUS 304L | 03Π₯18Π11 | 3304S11 | Z3CN18β10 |
| 316 | S31600 | 1.4401 / 1.4436 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 | SUS 316 | β | 316S31 / 316S33 | Z7CND17β11β02 |
| 316L | S31603 | 1.4404 / 1.4435 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 | SUS 316L | 03Ch17N14M3 / 03Ch17N14M2 | 316S11 / 316S13 | Z3CND17β11β02 / Z3CND18β14β03 |
| Nominal size in inches | Outside diameter in mm | Wall thickness in inches | Outside diameter in inches | Wall thickness in mm |
|---|---|---|---|---|
| 1/4 8 | 13.7 | 0.088 | 0.54 | 2.24 |
| 3/8 10 | 17.1 | 0.091 | 0.68 | 2.31 |
| 24 600 | 610 | 0.688 | 24 | 17.48 |
| 1/2 15 | 21.3 | 0.109 | 0.84 | 2.77 |
| 6 150 | 168.3 | 0.28 | 6.625 | 7.11 |
| 3/4 20 | 26.7 | 0.113 | 1.05 | 2.87 |
| 1 25 | 33.4 | 0.133 | 1.32 | 3.38 |
| 14 350 | 355.6 | 0.437 | 14 | 11.13 |
| 1 1/4 32 | 42.2 | 0.14 | 1.66 | 3.56 |
| 16 400 | 406.4 | 0.5 | 16 | 12.7 |
| 1 1/2 40 | 48.3 | 0.145 | 1.9 | 3.68 |
| 2 50 | 60.3 | 0.154 | 2.375 | 3.91 |
| 2 1/2 65 | 73 | 0.203 | 2.875 | 5.16 |
| 3 80 | 88.9 | 0.216 | 3.5 | 5.49 |
| 1/8 6 | 10.3 | 0.068 | 0.41 | 1.73 |
| 3 1/2 90 | 101.6 | 0.226 | 4 | 5.74 |
| 4 100 | 114.3 | 0.237 | 4.5 | 6.02 |
| 5 125 | 141.3 | 0.258 | 5.563 | 6.55 |
| 8 200 | 219.1 | 0.322 | 8.625 | 8.18 |
| 10 250 | 273 | 0.365 | 10.75 | 9.27 |
| 12 300 | 323.8 | 0.406 | 12.75 | 10.31 |
| 18 450 | 457 | 0.562 | 18 | 14.27 |
| 20 500 | 508 | 0.594 | 20 | 15.09 |
| 32 800 | 813 | 0.688 | 32 | 17.48 |
| Nominal Tube Sizes | Β | Outside Diameter | Wall Thickness | Weight | Weight | ||
| Schedule | Inch | MM | Inch | MM | Lbs/feet | kg/Meter | |
| 1/2 | 40 STD | 0.840 | 21 | 0.109 | 2.769 | 0.851 | 1.268 |
| Β | 80 STD | Β | Β | 0.147 | 3.734 | 1.088 | 1.621 |
| 3/4 | 40 STD | 1.050 | 27 | 0.113 | 2.870 | 1.131 | 1.684 |
| Β | 80 STD | Β | Β | 0.154 | 3.912 | 1.474 | 2.195 |
| 1 | 40 STD | 1.315 | 33 | 0.133 | 3.378 | 1.679 | 2.501 |
| Β | 80 STD | Β | Β | 0.179 | 4.547 | 2.172 | 3.325 |
| 1 1/4 | 40 STD | 1.660 | 42 | 0.140 | 3.556 | 2.273 | 3.385 |
| Β | 80 STD | Β | Β | 0.191 | 4.851 | 2.997 | 4.464 |
| 1 1/2 | 40 STD | 1.900 | 48 | 0.145 | 3.683 | 2.718 | 4.048 |
| Β | 80 STD | Β | Β | 0.200 | 5.080 | 3.361 | 5.409 |
| 2 | 40 STD | 2.375 | 60 | 0.154 | 3.912 | 3.653 | 5.441 |
| Β | 80 STD | Β | Β | 0.218 | 5.537 | 5.022 | 7.480 |
| 2 1/2 | 40 STD | 2.875 | 73 | 0.203 | 5.516 | 5.793 | 8.629 |
| Β | 80 STD | Β | Β | 0.276 | 7.010 | 7.661 | 11.411 |
| 4 | Β | 4.500 | 114 | 0.237 | 6.020 | 10.790 | 16.073 |
| Β | Β | Β | Β | 0.337 | 8.560 | 14.983 | 22.318 |
| 10 | Β | 10.750 | 273 | 0.188 | 4.775 | 21.207 | 31.588 |
| Β | Β | Β | Β | 0.219 | 5.563 | 24.631 | 36.689 |
| Β | 20 | Β | Β | 0.250 | 6.350 | 28.035 | 41.759 |
| Β | 30 | Β | Β | 0.307 | 7.798 | 34.240 | 51.002 |
| Β | Β | Β | Β | 0.344 | 8.738 | 38.231 | 56.946 |
| Β | 40 STD | Β | Β | 0.365 | 9.271 | 40.483 | 63.301 |
| Β | Β | Β | Β | 0.438 | 11.125 | 48.238 | 71.852 |
| Β | 60 XHY | Β | Β | 0.500 | 12.700 | 54.735 | 81.530 |
| Β | 80 | Β | Β | 0.594 | 15.088 | 64.429 | 95.969 |
| 6 | Β | 6.625 | 168 | 0.188 | 4.775 | 12.924 | 19.252 |
| Β | Β | Β | Β | 0.203 | 5.516 | 13.923 | 20.739 |
| Β | Β | Β | Β | 0.219 | 5.563 | 14.983 | 22.318 |
| Β | Β | Β | Β | 0.250 | 6.350 | 17.021 | 25.354 |
| Β | 40 STD | Β | Β | 0.280 | 7.112 | 18.974 | 58.263 |
| Β | Β | Β | Β | 0.312 | 7.925 | 21.036 | 31.334 |
| Β | Β | Β | Β | 0.375 | 9.525 | 25.031 | 37.285 |
| Β | 80 XHY | Β | Β | 0.432 | 10.973 | 28.573 | 42.561 |
| Β | Β | Β | Β | 0.500 | 12.700 | 32.708 | 48.719 |
| 8 | Β | 8.625 | 219 | 0.188 | 4.775 | 16.940 | 25.233 |
| Β | Β | Β | Β | 0.203 | 5.156 | 18.259 | 27.198 |
| Β | Β | Β | Β | 0.219 | 5.563 | 19.661 | 29.286 |
| Β | 20 | Β | Β | 0.250 | 6.350 | 22.361 | 33.308 |
| Β | 30 | Β | Β | 0.277 | 7.036 | 24.696 | 36.786 |
| Β | 40 | Β | Β | 0.322 | 8.179 | 28.554 | 42.352 |
| Β | Β | Β | Β | 0.375 | 9.525 | 33.041 | 49.216 |
| Β | 60 | Β | Β | 0.406 | 10.312 | 35.638 | 53.085 |
| Β | 80 XHY | Β | Β | 0.500 | 12.700 | 43.388 | 64.627 |
| 24 | Β | 24.000 | 610 | 0.250 | 6.350 | 63.413 | 94.456 |
| Β | Β | Β | Β | 0.281 | 7.137 | 71.183 | 106.029 |
| Β | Β | Β | Β | 0.312 | 7.925 | 18.932 | 117.573 |
| Β | 20 STD | Β | Β | 0.375 | 9.525 | 64.618 | 140.938 |
| Β | Β | Β | Β | 0.438 | 11.125 | 110.219 | 164.176 |
| Β | XHY | Β | Β | 0.500 | 12.700 | 125.490 | 186.923 |
| Β | Β | Β | Β | 0.625 | 15.875 | 156.028 | 232.410 |
| Β | 40 | Β | Β | 0.688 | 17.475 | 171.293 | 255.148 |
| Β | Β | Β | Β | 0.750 | 19.050 | 186.233 | 277.401 |
| 12 | Β | 12.750 | 324 | 0.188 | 4.775 | 25.222 | 37.570 |
| Β | Β | Β | Β | 0.219 | 5.563 | 29.309 | 43.657 |
| Β | Β | Β | Β | 0.250 | 6.350 | 33.375 | 49.713 |
| Β | Β | Β | Β | 0.281 | 7.137 | 37.420 | 55.739 |
| Β | Β | Β | Β | 0.312 | 7.925 | 41.445 | 61.735 |
| Β | Β | Β | Β | 0.375 | 9.525 | 49.562 | 73.824 |
| Β | Β | Β | Β | 0.406 | 10.312 | 53.525 | 79.727 |
| Β | Β | Β | Β | 0.500 | 12.700 | 65.415 | 97.438 |
| Β | Β | Β | Β | 0.562 | 14.275 | 73.154 | 108.966 |
| 14 | Β | 14.000 | 356 | 0.188 | 4.775 | 27.732 | 41.308 |
| Β | Β | Β | Β | 0.219 | 5.563 | 32.233 | 48.012 |
| Β | 20 | Β | Β | 0.250 | 6.350 | 36.713 | 54.685 |
| Β | Β | Β | Β | 0.281 | 7.137 | 41.172 | 61.327 |
| Β | Β | Β | Β | 0.312 | 7.925 | 45.611 | 67.939 |
| Β | STD | Β | Β | 0.375 | 9.525 | 54.568 | 81.281 |
| Β | 40 | Β | Β | 0.438 | 11.125 | 63.441 | 94.498 |
| Β | XHY | Β | Β | 0.500 | 12.700 | 72.090 | 107.381 |
| Β | Β | Β | Β | 0.625 | 15.875 | 89.278 | 132.983 |
| 3 | 40 STD | 3.500 | 89 | 0.216 | 5.486 | 7.576 | 11.284 |
| Β | 80 STD | Β | Β | 0.300 | 7.620 | 10.253 | 15.272 |
| 16 | Β | 16.000 | 406 | 0.188 | 4.775 | 21.748 | 47.290 |
| Β | Β | Β | Β | 0.219 | 5.563 | 36.910 | 54.980 |
| Β | 10 | Β | Β | 0.250 | 6.350 | 42.053 | 62.639 |
| Β | Β | Β | Β | 0.281 | 7.137 | 47.174 | 70.268 |
| Β | 20 | Β | Β | 0.312 | 7.925 | 52.275 | 77.866 |
| Β | Β | Β | Β | 0.344 | 8.738 | 57.519 | 85.677 |
| Β | 30 STD | Β | Β | 0.375 | 9.525 | 62.578 | 93.213 |
| Β | Β | Β | Β | 0.438 | 11.125 | 72.797 | 108.433 |
| Β | 40 XHY | Β | Β | 0.500 | 12.700 | 82.770 | 123.289 |
| 18 | Β | 18.000 | 457 | 0.219 | 5.563 | 41.588 | 61.948 |
| Β | Β | Β | Β | 0.250 | 6.350 | 47.393 | 70.593 |
| Β | Β | Β | Β | 0.281 | 7.137 | 53.176 | 79.208 |
| Β | 20 | Β | Β | 0.312 | 7.925 | 58.939 | 87.792 |
| Β | STD | Β | Β | 0.375 | 9.525 | 70.588 | 105.144 |
| Β | 30 | Β | Β | 0.438 | 11.125 | 82.152 | 122.369 |
| Β | XHY | Β | Β | 0.500 | 12.700 | 93.450 | 139.198 |
| Β | 40 | Β | Β | 0.562 | 14.275 | 104.666 | 155.904 |
| Β | Β | Β | Β | 0.625 | 15.875 | 115.978 | 172.754 |
| 30 | Β | 30.000 | 762 | 0.250 | 6.350 | 79.433 | 118.318 |
| Β | Β | Β | Β | 0.281 | 7.137 | 89.189 | 132.851 |
| Β | 10 | Β | Β | 0.312 | 7.925 | 98.925 | 147.353 |
| Β | STD | Β | Β | 0.375 | 9.525 | 118.648 | 176.731 |
| Β | Β | Β | Β | 0.438 | 11.125 | 138.286 | 205.983 |
| Β | 20 XHY | Β | Β | 0.500 | 12.700 | 157.530 | 234.647 |
| Β | 30 | Β | Β | 0.625 | 15.875 | 196.078 | 292.066 |
| Β | Β | Β | Β | 0.688 | 17.475 | 215.380 | 320.817 |
| Β | Β | Β | Β | 0.750 | 19.050 | 234.293 | 348.988 |
| 36 | Β | 36.000 | 914 | 0.250 | 6.350 | 95.453 | 142.180 |
| Β | Β | Β | Β | 0.281 | 7.137 | 107.196 | 159.672 |
| Β | 10 | Β | Β | 0.312 | 7.925 | 118.918 | 177.133 |
| Β | STD | Β | Β | 0.375 | 9.525 | 142.678 | 215.525 |
| Β | Β | Β | Β | 0.438 | 11.125 | 166.353 | 247.790 |
| Β | 20 XHY | Β | Β | 0.500 | 12.700 | 198.570 | 282.372 |
| Β | Β | Β | Β | 0.625 | 15.875 | 236.128 | 351.723 |
| Β | Β | Β | Β | 0.688 | 17.475 | 259.467 | 386.487 |
| Β | Β | Β | Β | 0.750 | 19.050 | 282.353 | 420.576 |
| 20 | Β | 20.000 | 508 | 0.250 | 6.350 | 52.733 | 78.547 |
| Β | Β | Β | Β | 0.282 | 7.163 | 59.386 | 88.458 |
| Β | Β | Β | Β | 0.312 | 7.925 | 65.604 | 97.719 |
| Β | 20 STD | Β | Β | 0.375 | 9.525 | 78.598 | 117.075 |
| Β | Β | Β | Β | 0.438 | 11.125 | 91.508 | 136.305 |
| Β | 30 XHY | Β | Β | 0.500 | 12.700 | 104.130 | 155.106 |
| Β | 40 | Β | Β | 0.594 | 15.088 | 123.110 | 183.378 |
| Β | Β | Β | Β | 0.625 | 15.875 | 129.328 | 192.640 |
| Β | Β | Β | Β | 0.688 | 17.475 | 141.901 | 211.368 |
| 42 | Β | 42.000 | 1067 | 0.312 | 7.925 | 138.911 | 206.914 |
| Β | STD | Β | Β | 0.375 | 9.525 | 166.708 | 248.319 |
| Β | XHY | Β | Β | 0.500 | 12.700 | 221.610 | 33.097 |
| Β | Β | Β | Β | 0.750 | 19.050 | 330.413 | 492.163 |
| 48 | STD | 48.000 | 1219 | 0.375 | 9.525 | 190.738 | 284.112 |
| Β | Β | Β | Β | 0.438 | 11.125 | 222.487 | 331.404 |
| Β | XHY | Β | Β | 0.500 | 12.700 | 253.650 | 377.822 |
| Β | Β | Β | Β | 0.750 | 19.050 | 378.473 | 563.750 |
| Β | Β | Β | Β | 0.875 | 22.225 | 440.383 | 655.969 |



Packaging, Delivery & Marking Details
Each boiler tubing is safely packed in wooden boxes, bundles, or plastic wrap to avoid damage. We use clear markings, like grade, size, heat number, and details for easy identification. We make sure fast delivery around the world with safe logistics meeting urgent project needs.
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Quality Tests & Certifications
All our Stainless Steel Boiler Tubing undergoes strict testing, including hydrostatic, ultrasonic, eddy current and mechanical tests. We provide certified products with mill test certificates (MTC), third-party inspection reports and compliance certificates ensuring quality assurance.







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