Steam Pipe Sizing Chart
Steam Pipe Sizing Table (Carrying capacity in Kg/h)
Pressure bar | Velocity m/s | 15 mm | 20 mm | 25 mm | 32 mm | 40 mm | 50 mm | 65 mm | 80 mm | 100 mm | 125 mm | 150 mm | 200 mm | 250 mm | 300 mm |
0.4 | 15 | 7 | 14 | 24 | 37 | 52 | 99 | 145 | 213 | 394 | 648 | 917 | 1606 | 2590 | 3678 |
25 | 10 | 25 | 40 | 62 | 92 | 162 | 265 | 384 | 675 | 972 | 1457 | 2806 | 4101 | 5936 | |
40 | 17 | 35 | 64 | 102 | 142 | 265 | 403 | 576 | 1037 | 1670 | 2303 | 4318 | 6909 | 9500 | |
0.7 | 15 | 7 | 16 | 25 | 40 | 59 | 109 | 166 | 250 | 431 | 680 | 1006 | 1708 | 2791 | 3852 |
25 | 12 | 25 | 45 | 72 | 100 | 182 | 287 | 430 | 716 | 1145 | 1575 | 2816 | 4629 | 6204 | |
40 | 18 | 37 | 68 | 106 | 167 | 298 | 428 | 630 | 1108 | 1712 | 2417 | 4532 | 7251 | 10323 | |
1.0 | 15 | 8 | 17 | 29 | 43 | 65 | 112 | 182 | 260 | 470 | 694 | 1020 | 1864 | 2814 | 4045 |
25 | 12 | 26 | 48 | 72 | 100 | 193 | 300 | 445 | 730 | 1160 | 1660 | 3099 | 4869 | 6751 | |
40 | 19 | 39 | 71 | 112 | 172 | 311 | 465 | 640 | 1150 | 1800 | 2500 | 4815 | 7333 | 10370 | |
2.0 | 15 | 12 | 25 | 45 | 70 | 100 | 182 | 280 | 410 | 715 | 1125 | 1580 | 2814 | 4545 | 6277 |
25 | 19 | 43 | 70 | 112 | 162 | 295 | 428 | 656 | 1215 | 1755 | 2520 | 4815 | 7425 | 10575 | |
40 | 30 | 64 | 115 | 178 | 275 | 475 | 745 | 1010 | 1895 | 2925 | 4175 | 7678 | 11997 | 16796 | |
3.0 | 15 | 16 | 37 | 60 | 93 | 127 | 245 | 385 | 535 | 925 | 1505 | 2040 | 3983 | 6217 | 8743 |
25 | 26 | 56 | 100 | 152 | 225 | 425 | 632 | 910 | 1580 | 2480 | 3440 | 6779 | 10269 | 14316 | |
40 | 41 | 87 | 157 | 250 | 357 | 595 | 1025 | 1460 | 2540 | 4050 | 5940 | 10476 | 16470 | 22950 | |
4.0 | 15 | 19 | 42 | 70 | 108 | 156 | 281 | 432 | 635 | 1166 | 1685 | 2460 | 4618 | 7121 | 10358 |
25 | 30 | 63 | 115 | 180 | 270 | 450 | 742 | 1080 | 1980 | 2925 | 4225 | 7866 | 12225 | 17304 | |
40 | 49 | 116 | 197 | 295 | 456 | 796 | 1247 | 1825 | 3120 | 4340 | 7050 | 12661 | 19663 | 27816 | |
5.0 | 15 | 22 | 49 | 87 | 128 | 187 | 352 | 526 | 770 | 1295 | 2105 | 2835 | 5548 | 8586 | 11947 |
25 | 36 | 81 | 135 | 211 | 308 | 548 | 885 | 1265 | 2110 | 3540 | 5150 | 8865 | 14268 | 20051 | |
40 | 59 | 131 | 225 | 338 | 495 | 855 | 1350 | 1890 | 3510 | 5400 | 7870 | 13761 | 23205 | 32244 | |
6.0 | 15 | 26 | 59 | 105 | 153 | 225 | 425 | 632 | 925 | 1555 | 2525 | 3400 | 6654 | 10297 | 14328 |
25 | 43 | 97 | 162 | 253 | 370 | 658 | 1065 | 1520 | 2530 | 4250 | 6175 | 10629 | 17108 | 24042 | |
40 | 71 | 157 | 270 | 405 | 595 | 1025 | 1620 | 2270 | 4210 | 6475 | 9445 | 16515 | 27849 | 38697 | |
7.0 | 15 | 29 | 63 | 110 | 165 | 260 | 445 | 705 | 952 | 1815 | 2765 | 3990 | 7390 | 12015 | 16096 |
25 | 49 | 114 | 190 | 288 | 450 | 785 | 1205 | 1750 | 3025 | 4815 | 6900 | 12288 | 19377 | 27080 | |
40 | 76 | 177 | 303 | 455 | 690 | 1210 | 1865 | 2520 | 4585 | 7560 | 10880 | 19141 | 30978 | 43470 | |
8.0 | 15 | 32 | 70 | 126 | 190 | 285 | 475 | 800 | 1125 | 1990 | 3925 | 4540 | 8042 | 12625 | 17728 |
25 | 54 | 122 | 205 | 320 | 465 | 810 | 1260 | 1870 | 3240 | 5220 | 7120 | 13140 | 21600 | 33210 | |
40 | 84 | 192 | 327 | 510 | 730 | 1370 | 2065 | 3120 | 5135 | 8395 | 12470 | 21247 | 33669 | 46858 | |
10.0 | 15 | 41 | 95 | 155 | 250 | 372 | 626 | 1012 | 1465 | 2495 | 3995 | 5860 | 9994 | 16172 | 22713 |
25 | 66 | 145 | 257 | 405 | 562 | 990 | 1530 | 2205 | 3825 | 6295 | 8995 | 15966 | 25860 | 35890 | |
40 | 104 | 216 | 408 | 615 | 910 | 1635 | 2545 | 3600 | 6230 | 9880 | 14390 | 26621 | 41011 | 57560 | |
14.0 | 15 | 50 | 121 | 205 | 310 | 465 | 810 | 1270 | 1870 | 3220 | 5215 | 7390 | 12921 | 20538 | 29016 |
25 | 85 | 195 | 331 | 520 | 740 | 1375 | 2080 | 3120 | 5200 | 8500 | 12560 | 21720 | 34139 | 47128 | |
40 | 126 | 305 | 555 | 825 | 1210 | 2195 | 3425 | 4735 | 8510 | 13050 | 18630 | 35548 | 54883 | 76534 |
Pressure bar | Velocity m/s | 15 mm | 20 mm | 25 mm | 32 mm | 40 mm | 50 mm | 65 mm | 80 mm | 100 mm | 125 mm | 150 mm | 200 mm | 250 mm | 300 mm |
15 | 15 | 85 | 148 | 241 | 417 | 567 | 935 | 1335 | 2061 | 3548 | 5574 | 8052 | 13943 | 21977 | 31521 |
25 | 141 | 247 | 402 | 695 | 945 | 1559 | 2224 | 3434 | 5913 | 9292 | 13420 | 23239 | 36629 | 52536 | |
40 | 226 | 395 | 643 | 1112 | 1513 | 2494 | 3559 | 5495 | 9461 | 14868 | 21472 | 37182 | 58607 | 84057 | |
17 | 15 | 96 | 167 | 271 | 470 | 639 | 1053 | 1503 | 2321 | 3996 | 6278 | 9067 | 15702 | 24749 | 35497 |
25 | 159 | 278 | 453 | 783 | 1064 | 1756 | 2505 | 3864 | 6659 | 10464 | 15113 | 26170 | 41249 | 59162 | |
40 | 255 | 445 | 724 | 1252 | 1704 | 2809 | 4008 | 6188 | 10654 | 16743 | 24180 | 41872 | 65999 | 94659 | |
20 | 15 | 112 | 195 | 317 | 549 | 747 | 1232 | 1758 | 2715 | 4673 | 7343 | 10606 | 18365 | 28948 | 41519 |
25 | 186 | 325 | 530 | 915 | 1245 | 2054 | 2929 | 4523 | 7788 | 12239 | 17677 | 30609 | 48247 | 69199 | |
40 | 298 | 520 | 847 | 1465 | 1993 | 3285 | 4688 | 7238 | 12463 | 19548 | 28282 | 48975 | 77196 | 110718 | |
24 | 15 | 133 | 232 | 378 | 654 | 889 | 1466 | 2094 | 3232 | 5565 | 8744 | 12629 | 21868 | 34468 | 49437 |
25 | 221 | 387 | 631 | 1090 | 1482 | 2445 | 3488 | 5386 | 9274 | 14573 | 20048 | 36448 | 57448 | 82396 | |
40 | 355 | 620 | 1008 | 1744 | 2373 | 3912 | 5582 | 8618 | 14839 | 23319 | 33676 | 58316 | 91918 | 131833 | |
28 | 15 | 154 | 269 | 437 | 757 | 1029 | 1696 | 2422 | 3739 | 6437 | 10114 | 14608 | 25296 | 39871 | 57186 |
25 | 256 | 448 | 729 | 1261 | 1714 | 2828 | 4035 | 6230 | 10728 | 16858 | 24347 | 42161 | 66453 | 95312 | |
40 | 410 | 717 | 1167 | 2017 | 2745 | 4525 | 6457 | 9969 | 17164 | 26974 | 38955 | 67457 | 106326 | 152498 | |
34 | 15 | 186 | 324 | 528 | 913 | 1241 | 2047 | 2923 | 4512 | 7767 | 12205 | 17627 | 30523 | 48112 | 69004 |
25 | 309 | 541 | 880 | 1522 | 2069 | 3413 | 4869 | 7518 | 12944 | 20342 | 29378 | 50874 | 80186 | 115009 | |
40 | 495 | 865 | 1408 | 2434 | 3312 | 5460 | 7791 | 12029 | 20712 | 32548 | 47005 | 81397 | 128299 | 184013 | |
42 | 15 | 231 | 401 | 654 | 1131 | 1537 | 2535 | 3620 | 5588 | 9620 | 15117 | 21833 | 37806 | 59591 | 85469 |
25 | 382 | 670 | 1090 | 1885 | 2562 | 4227 | 6030 | 9311 | 16033 | 25195 | 36388 | 63013 | 99319 | 142451 | |
40 | 613 | 1071 | 1744 | 3015 | 4103 | 6763 | 9650 | 14900 | 25654 | 40315 | 58221 | 100819 | 158913 | 227920 |