Velikosti cevi API so običajno določene glede na nazivno velikost cevi (NPS) ali zunanji premer (OD) in debelino stene. NPS je standardizirana številčna oznaka, ki približno označuje velikost cevi, medtem ko OD in debelina stene zagotavljata natančne meritve. Običajno se OD cevi za cevi API gibljejo od 21,3 mm do 1026 mm, debeline sten pa od 2,0 mm do 120 mm.
Velikosti cevi API 5L in razpored
| Zunanji premer OD (in) |
NPS (v) |
Razpored cevi | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SCH 10 | SCH 20 | SCH 30 | SCH STD | SCH 40 | SCH 60 | SCH XS | SCH 80 | 100 SCH | 120 SCH | 140 SCH | 160 SCH | SCH XXS | ||
| Debelina stene(v) | ||||||||||||||
| 0.405 | 1/8 | 0.068 | 0.068 | 0.095 | 0.095 | |||||||||
| 0.540 | 1/4 | 0.088 | 0.088 | 0.119 | 0.119 | |||||||||
| 0.675 | 3/8 | 0.091 | 0.091 | 0.126 | 0.126 | |||||||||
| 0.840 | 1/2 | 0.109 | 0.109 | 0.147 | 0.147 | 0.187 | 0.294 | |||||||
| 1.050 | 3/4 | 0.113 | 0.113 | 0.154 | 0.154 | 0.219 | 0.308 | |||||||
| 1.315 | 1 | 0.133 | 0.133 | 0.179 | 0.179 | 0.250 | 0.358 | |||||||
| 1.660 | 1 1/4 | 0.140 | 0.140 | 0.191 | 0.191 | 0.250 | 0.382 | |||||||
| 1.900 | 1 1/2 | 0.145 | 0.145 | 0.200 | 0.200 | 0.281 | 0.400 | |||||||
| 2.375 | 2 | 0.154 | 0.154 | 0.218 | 0.218 | 0.344 | 0.436 | |||||||
| 2.875 | 2 1/2 | 0.203 | 0.203 | 0.276 | 0.276 | 0.375 | 0.552 | |||||||
| 3.500 | 3 | 0.216 | 0.216 | 0.300 | 0.300 | 0.438 | 0.600 | |||||||
| 4.000 | 3 1/2 | 0.226 | 0.226 | 0.318 | 0.318 | |||||||||
| 4.500 | 4 | 0.237 | 0.237 | 0.337 | 0.337 | 0.438 | 0.531 | 0.674 | ||||||
| 5.563 | 5 | 0.258 | 0.258 | 0.375 | 0.375 | 0.500 | 0.625 | 0.750 | ||||||
| 6.625 | 6 | 0.280 | 0.280 | 0.432 | 0.432 | 0.562 | 0.719 | 0.864 | ||||||
| 8.625 | 8 | 0.250 | 0.277 | 0.322 | 0.322 | 0.406 | 0.500 | 0.500 | 0.594 | 0.719 | 0.812 | 0.906 | 0.875 | |
| 10.750 | 10 | 0.250 | 0.307 | 0.365 | 0.365 | 0.500 | 0.500 | 0.594 | 0.719 | 0.844 | 1.000 | 1.125 | 1.000 | |
| 12.750 | 12 | 0.250 | 0.330 | 0.375 | 0.406 | 0.562 | 0.500 | 0.688 | 0.844 | 1.000 | 1.125 | 1.312 | 1.000 | |
| 14.000 | 14 | 0.250 | 0.312 | 0.375 | 0.375 | 0.438 | 0.594 | 0.500 | 0.750 | 0.938 | 1.094 | 1.250 | 1.406 | |
| 16.000 | 16 | 0.250 | 0.312 | 0.375 | 0.375 | 0.500 | 0.656 | 0.500 | 0.844 | 1.031 | 1.219 | 1.438 | 1.594 | |
| 18.000 | 18 | 0.250 | 0.312 | 0.438 | 0.375 | 0.562 | 0.750 | 0.500 | 0.938 | 1.156 | 1.375 | 1.562 | 1.781 | |
| 20.000 | 20 | 0.250 | 0.375 | 0.500 | 0.375 | 0.594 | 0.812 | 0.500 | 1.031 | 1.281 | 1.500 | 1.750 | 1.969 | |
| 22.000 | 22 | 0.250 | 0.375 | 0.500 | 0.375 | 0.875 | 0.500 | 1.125 | 1.375 | 1.625 | 1.875 | 2.125 | ||
| 24.000 | 24 | 0.250 | 0.375 | 0.562 | 0.375 | 0.688 | 0.969 | 0.500 | 1.219 | 1.531 | 1.812 | 2.062 | 2.344 | |
| 30.000 | 30 | 0.312 | 0.500 | 0.625 | 0.375 | 0.500 | ||||||||
| 32.000 | 32 | 0.312 | 0.500 | 0.625 | 0.375 | 0.688 | ||||||||
| 34.000 | 34 | 0.312 | 0.500 | 0.625 | 0.375 | 0.688 | ||||||||
| 36.000 | 36 | 0.312 | 0.500 | 0.625 | 0.375 | 0.750 | ||||||||
| 42.000 | 42 | 0.500 | 0.625 | 0.375 | 0.750 | |||||||||
| Cev NPS | urnik št | Zunanji premer, palci | Debelina stene, palcev | Končna teža, lb/ft | Zunanji premer, mm | Debelina stene, mm | Masa gladkega konca, kg/m |
|---|---|---|---|---|---|---|---|
| 1/8 | 40/STD | 0.405 palcev | 0.068 palcev | 0.24 | 10,3 mm | 1,73 mm | 0.37 kg/m |
| 1⁄4 | 40/STD | 0.540 palcev | 0.088 palcev | 0.43 | 13,7 mm | 2,24 mm | 0.63 kg/m |
| 3⁄8 | 40/STD | 0.675 palcev | 0.091 palcev | 0.57 | 17,1 mm | 2,31 mm | 0.84 kg/m |
| 1⁄2 | 40/STD | 0.840 palcev | 0.109 palcev | 0.85 | 21,3 mm | 2,77 mm | 1,27 kg/m |
| 3⁄4 | 40/STD | 1.050 palcev | 0.113 palcev | 1.13 | 26,7 mm | 2,87 mm | 1,69 kg/m |
| 1 | 40/STD | 1.315 palcev | 0.133 palcev | 1.68 | 33,4 mm | 3,38 mm | 2,50 kg/m |
| 1-1⁄4 | 40/STD | 1.660 palcev | 0.140 palcev | 2.27 | 42,2 mm | 3,56 mm | 3,39 kg/m |
| 1-1⁄2 | 40/STD | 1.900 palcev | 0.145 palcev | 2.72 | 48,3 mm | 3,68 mm | 4,05 kg/m |
| 2 | 40/STD | 2.375 palcev | 0.154 palcev | 3.66 | 60,3 mm | 3,91 mm | 5,44 kg/m |
| 2-1⁄2 | 40/STD | 2.875 palcev | 0.203 palca | 5.80 | 73.0 mm | 5,16 mm | 8,63 kg/m |
| 3 | 40/STD | 3.500 palcev | 0.216 palcev | 7.58 | 88,9 mm | 5,49 mm | 11,29 kg/m |
| 4 | 40/STD | 4.500 palcev | 0.237 palcev | 10.80 | 114,3 mm | 6,02 mm | 16,08 kg/m |
| 5 | 40/STD | 5.563 palcev | 0.258 palcev | 14.63 | 141,3 mm | 6,55 mm | 21,77 kg/m |
| 6 | 40/STD | 6.625 palcev | 0.280 palcev | 18.99 | 168,3 mm | 7,11 mm | 28,26 kg/m |
| 8 | 40/STD | 8.625 palcev | 0.322 palca | 28.58 | 219,1 mm | 8,18 mm | 42,55 kg/m |
| 10 | 40/STD | 10.750 palcev | 0.365 palcev | 40.52 | 273.0 mm | 9,27 mm | 60,29 kg/m |
| 12 | 40 | 12.750 palcev | 0.406 palcev | 53.57 | 323,8 mm | 10,31 mm | 79,71 kg/m |
| 14 | 40 | 14.000 palcev | 0.438 palcev | 63.50 | 355,6 mm | 11,13 mm | 94,55 kg/m |
| 16 | 40 | 16.000 palcev | 0.500 palcev | 82.85 | 406,4 mm | 12,70 mm | 123,31 kg/m |
| 18 | 40 | 18.000 palcev | 0.562 palca | 104.76 | 457 mm | 14,27 mm | 155,81 kg/m |
| 20 | 40 | 20.000 palcev | 0.594 palcev | 123.23 | 508 mm | 15,09 mm | 183,43 kg/m2 |
| 24 | 40 | 24.000 palcev | 0.688 palcev | 171.45 | 610 mm | 17,48 mm | 255,43 kg/m |
| 32 | 40 | 32.000 palcev | 0.688 palcev | 230.29 | 813 mm | 17,48 mm | 342,94 kg/m |
| 34 | 40 | 34.000 palcev | 0.688 palcev | 245.00 | 864 mm | 17,48 mm | 364,92 kg/m |
| 36 | 40 | 36.000 palcev | 0.750 palcev | 282.62 | 914 mm | 19,05 mm | 420,45 kg/m |





