Pipework - Nominal Bore Pipe Sizes
Nominal Bore Pipe SizesEdit
| NPS/NB | DN | [in (mm)] | SCH 5s | SCH 5 | SCH 10s | SCH 10 | SCH 20 | SCH 30 | SCH 40s/STD | SCH 40 | SCH 60 | SCH 80s | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | XS | XXS |
| ⅛ | 6 | 0.404 (10.26) | 0.035 (0.889) | 0.049 (1.245) | 0.049 (1.245) | 0.057 (1.448) | 0.068 (1.727) | 0.068 (1.727) | — | 0.095 (2.413) | 0.095 (2.413) | — | — | — | — | 0.095 (2.413) | — | ||
| ¼ | 8 | 0.540 (13.72) | 0.049 (1.245) | 0.065 (1.651) | 0.065 (1.651) | 0.073 (1.854) | 0.088 (2.235) | 0.088 (2.235) | — | 0.119 (3.023) | 0.119 (3.023) | — | — | — | — | 0.119 (3.023) | — | ||
| ⅜ | 10 | 0.675 (17.15) | 0.049 (1.245) | 0.065 (1.651) | 0.065 (1.651) | 0.073 (1.854) | 0.091 (2.311) | 0.091 (2.311) | — | 0.126 (3.200) | 0.126 (3.200) | — | — | — | — | 0.126 (3.200) | — | ||
| ½ | 15 | 0.840 (21.34) | 0.065 (1.651) | 0.083 (2.108) | 0.083 (2.108) | 0.095 (2.413) | 0.109 (2.769) | 0.109 (2.769) | — | 0.147 (3.734) | 0.147 (3.734) | — | — | — | 0.188 (4.775) | 0.147 (3.734) | 0.294 (7.468) | ||
| ¾ | 20 | 1.050 (26.67) | 0.065 (1.651) | 0.083 (2.108) | 0.083 (2.108) | 0.095 (2.413) | 0.113 (2.870) | 0.113 (2.870) | — | 0.154 (3.912) | 0.154 (3.912) | — | — | — | 0.219 (5.563) | 0.154 (3.912) | 0.308 (7.823) | ||
| 1 | 25 | 1.315 (33.40) | 0.065 (1.651) | 0.109 (2.769) | 0.109 (2.769) | 0.114 (2.896) | 0.133 (3.378) | 0.133 (3.378) | — | 0.179 (4.547) | 0.179 (4.547) | — | — | — | 0.250 (6.350) | 0.179 (4.547) | 0.358 (9.093) | ||
| 1¼ | 32 | 1.660 (42.16) | 0.065 (1.651) | 0.109 (2.769) | 0.109 (2.769) | 0.117 (2.972) | 0.140 (3.556) | 0.140 (3.556) | — | 0.191 (4.851) | 0.191 (4.851) | — | — | — | 0.250 (6.350) | 0.191 (4.851) | 0.382 (9.703) | ||
| 1½ | 40 | 1.900 (48.26) | 0.065 (1.651) | 0.109 (2.769) | 0.109 (2.769) | 0.125 (3.175) | 0.145 (3.683) | 0.145 (3.683) | — | 0.200 (5.080) | 0.200 (5.080) | — | — | — | 0.281 (7.137) | 0.200 (5.080) | 0.400 (10.160) | ||
| 2 | 50 | 2.375 (60.33) | 0.065 (1.651) | 0.109 (2.769) | 0.109 (2.769) | 0.125 (3.175) | 0.154 (3.912) | 0.154 (3.912) | — | 0.218 (5.537) | 0.218 (5.537) | — | 0.250 (6.350) | — | 0.344 (8.738) | 0.218 (5.537) | 0.436 (11.074) | ||
| 2½ | 65 | 2.875 (73.03) | 0.083 (2.108) | 0.120 (3.048) | 0.120 (3.048) | 0.188 (4.775) | 0.203 (5.156) | 0.203 (5.156) | — | 0.276 (7.010) | 0.276 (7.010) | — | 0.300 (7.620) | — | 0.375 (9.525) | 0.276 (7.010) | 0.552 (14.021) | ||
| 3 | 80 | 3.500 (88.90) | 0.083 (2.108) | 0.120 (3.048) | 0.120 (3.048) | 0.188 (4.775) | 0.216 (5.486) | 0.216 (5.486) | — | 0.300 (7.620) | 0.300 (7.620) | — | 0.350 (8.890) | — | 0.438 (11.125) | 0.300 (7.620) | 0.600 (15.240) | ||
| 3½ | 90 | 4.000 (101.60) | 0.083 (2.108) | 0.120 (3.048) | 0.120 (3.048) | 0.188 (4.775) | 0.226 (5.740) | 0.226 (5.740) | — | 0.318 (8.077) | 0.318 (8.077) | — | — | — | — | 0.318 (8.077) | 0.636 (16.154) | ||
| 4 | 100 | 4.500 (114.30) | 0.083 (2.108) | 0.120 (3.048) | 0.120 (3.048) | — | 0.188 (4.775) | 0.237 (6.020) | 0.237 (6.020) | — | 0.337 (8.560) | 0.337 (8.560) | — | 0.437 (11.100) | — | 0.531 (13.487) | 0.337 (8.560) | 0.674 (17.120) | |
| 4½ | 115 | 5.000 (127.00) | — | — | — | — | — | 0.247 (6.274) | 0.247 (6.274) | — | 0.355 (9.017) | 0.355 (9.017) | — | — | — | — | 0.355 (9.017) | 0.710 (18.034) | |
| 5 | 125 | 5.563 (141.30) | 0.109 (2.769) | 0.134 (3.404) | 0.134 (3.404) | — | — | 0.258 (6.553) | 0.258 (6.553) | — | 0.375 (9.525) | 0.375 (9.525) | — | 0.500 (12.700) | — | 0.625 (15.875) | 0.375 (9.525) | 0.750 (19.050) | |
| 6 | 150 | 6.625 (168.28) | 0.109 (2.769) | 0.134 (3.404) | 0.134 (3.404) | — | — | 0.280 (7.112) | 0.280 (7.112) | — | 0.432 (10.973) | 0.432 (10.973) | — | 0.562 (14.275) | — | 0.719 (18.263) | 0.432 (10.973) | 0.864 (21.946) | |
| 7 | — | 7.625 (193.68) | — | — | — | — | — | 0.301 (7.645) | 0.301 (7.645) | — | 0.500 (12.700) | 0.500 (12.700) | — | — | — | — | 0.500 (12.700) | 0.875 (22.225) | |
| 8 | 200 | 8.625 (219.08) | 0.109 (2.769) | 0.148 (3.759) | 0.148 (3.759) | 0.250 (6.350) | 0.277 (7.036) | 0.322 (8.179) | 0.322 (8.179) | 0.406 (10.312) | 0.500 (12.700) | 0.500 (12.700) | 0.593 (15.062) | 0.719 (18.263) | 0.812 (20.625) | 0.906 (23.012) | 0.500 (12.700) | 0.875 (22.225) | |
| 9 | — | 9.625 (244.48) | — | — | — | — | — | 0.342 (8.687) | 0.342 (8.687) | — | 0.500 (12.700) | 0.500 (12.700) | — | — | — | — | 0.500 (12.700) | — | |
| 10 | 250 | 10.75 (273.05) | 0.134 (3.404) | 0.134 (3.404) | 0.165 (4.191) | 0.165 (4.191) | 0.250 (6.350) | 0.307 (7.798) | 0.365 (9.271) | 0.365 (9.271) | 0.500 (12.700) | 0.500 (12.700) | 0.593 (15.062) | 0.718 (18.237) | 0.843 (21.412) | 1.000 (25.400) | 1.125 (28.575) | — | — |
| 12 | 300 | 12.75 (323.85) | 0.156 (3.962) | 0.156 (3.962) | 0.180 (4.572) | 0.180 (4.572) | 0.250 (6.350) | 0.330 (8.382) | 0.375 (9.525) | 0.406 (10.312) | 0.562 (14.275) | 0.500 (12.700) | 0.687 (17.450) | 0.843 (21.412) | 1.000 (25.400) | 1.125 (28.575) | 1.312 (33.325) | — | — |
| 14 | 350 | 14.00 (355.60) | 0.156 (3.962) | 0.156 (3.962) | 0.188 (4.775) | 0.250 (6.350) | 0.312 (7.925) | 0.375 (9.525) | 0.375 (9.525) | 0.437 (11.100) | 0.593 (15.062) | 0.500 (12.700) | 0.750 (19.050) | 0.937 (23.800) | 1.093 (27.762) | 1.250 (31.750) | 1.406 (35.712) | — | — |
| 16 | 400 | 16.00 (406.40) | 0.165 (4.191) | 0.165 (4.191) | 0.188 (4.775) | 0.250 (6.350) | 0.312 (7.925) | 0.375 (9.525) | 0.375 (9.525) | 0.500 (12.700) | 0.656 (16.662) | 0.500 (12.700) | 0.843 (21.412) | 1.031 (26.187) | 1.218 (30.937) | 1.437 (36.500) | 1.593 (40.462) | — | — |
| 18 | 450 | 18.00 (457.20) | 0.165 (4.191) | 0.165 (4.191) | 0.188 (4.775) | 0.250 (6.350) | 0.312 (7.925) | 0.437 (11.100) | 0.375 (9.525) | 0.562 (14.275) | 0.750 (19.050) | 0.500 (12.700) | 0.937 (23.800) | 1.156 (29.362) | 1.375 (34.925) | 1.562 (39.675) | 1.781 (45.237) | — | — |
| 20 | 500 | 20.00 (508.00) | 0.188 (4.775) | 0.188 (4.775) | 0.218 (5.537) | 0.250 (6.350) | 0.375 (9.525) | 0.500 (12.700) | 0.375 (9.525) | 0.593 (15.062) | 0.812 (20.625) | 0.500 (12.700) | 1.031 (26.187) | 1.280 (32.512) | 1.500 (38.100) | 1.750 (44.450) | 1.968 (49.987) | — | — |
| 22 | 550 | 22.00 (558.80) | 0.188 (4.775) | 0.188 (4.775) | 0.218 (5.537) | 0.250 (6.350) | 0.375 (9.525) | 0.500 (12.700) | 0.375 (9.525) | — | 0.875 (22.225) | 0.500 (12.700) | 1.125 (28.575) | 1.375 (34.925) | 1.625 (41.275) | 1.875 (47.625) | 2.125 (53.975) | — | — |
| 24 | 600 | 24.00 (609.60) | 0.218 (5.537) | 0.218 (5.537) | 0.250 (6.350) | 0.250 (6.350) | 0.375 (9.525) | 0.562 (14.275) | 0.375 (9.525) | 0.687 (17.450) | 0.968 (24.587) | 0.500 (12.700) | 1.218 (30.937) | 1.531 (38.887) | 1.812 (46.025) | 2.062 (52.375) | 2.343 (59.512) | — | — |
| 26 | 650 | 26.000 (660.400) | — | — | 0.312 (7.925) | 0.500 (12.700) | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | — | — | |
| 28 | 700 | 28.000 (711.200) | — | ? | 0.312 (7.925) | 0.500 (12.700) | 0.625 (15.875) | 0.375 (9.525) | — | — | — | — | — | — | — | — | — | — | |
| 30 | 750 | 30.000 (762.000) | 0.250 (6.350) | 0.312 (7.925) | 0.312 (7.925) | 0.500 (12.700) | 0.625 (15.875) | 0.375 (9.525) | — | — | — | — | — | — | — | — | — | — | |
| 32 | 800 | 32.000 (812.800) | — | — | 0.312 (7.925) | 0.500 (12.700) | 0.625 (15.875) | 0.375 (9.525) | 0.688 (17.475) | — | — | — | — | — | — | — | — | — | |
| 34 | 850 | 34.000 (863.600) | — | — | 0.312 (7.925) | 0.500 (12.700) | 0.625 (15.875) | 0.375 (9.525) | 0.688 (17.475) | — | — | — | — | — | — | — | — | — | |
| 36 | 900 | 36.000 (914.400) | — | — | 0.312 (7.925) | 0.500 (12.700) | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | — | — | |
| 40 | 1000 | 40.000 (1,016.000) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 42 | 1050 | 42.000 (1,066.800) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 44 | 1100 | 44.000 (1,117.600) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 46 | 1150 | 46.000 (1,168.400) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 48 | 1200 | 48.000 (1,219.200) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 52 | 1300 | 52.000 (1,320.800) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 56 | 1400 | 56.000 (1,422.400) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 60 | 1500 | 60.000 (1,524.000) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 64 | 1600 | 64.000 (1,625.600) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 68 | 1700 | 68.000 (1,727.200) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 72 | 1800 | 72.000 (1,828.800) | — | — | — | — | — | — | 0.375 (9.525) | — | — | — | — | — | — | — | — | 0.500 (12.700) | 1.000 (25.400) |
| 76 | 1900 | 76.000 (1,930.400) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 80 | 2000 | 80.000 (2,032.000) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 88 | 2200 | 88.000 (2,235.200) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |