Wrought Steel Butt welding Fittings (ASME)
Straight Tees and Caps
ASME B16.9
Nominal Pipe Size (NPS) | Outside | Center-to-End | End-to-End | |||||||||
Diameter | Straight Tees | Caps | ||||||||||
at Bevel | Length (2) | Limiting Wall Thickness for Length "E" | Length (3) | |||||||||
OD | C | M (1) | E | E1 | ||||||||
IN | MM | IN | MM | IN | MM | IN | MM | IN | MM | IN | MM | |
½ | 0.84 | 21.3 | 1 | 25 | 1 | 25 | 1 | 25 | 0.18 | 4.57 | 1 | 25 |
¾ | 1.05 | 26.7 | 1.12 | 29 | 1.12 | 29 | 1 | 25 | 0.15 | 3.81 | 1 | 25 |
1 | 1.32 | 33.4 | 1.5 | 38 | 1.5 | 38 | 1.5 | 38 | 0.18 | 4.57 | 1.5 | 38 |
1¼ | 1.66 | 42.2 | 1.88 | 48 | 1.88 | 48 | 1.5 | 38 | 0.19 | 4.83 | 1.5 | 38 |
1½ | 1.9 | 48.3 | 2.25 | 57 | 2.25 | 57 | 1.5 | 38 | 0.2 | 5.08 | 1.5 | 38 |
2 | 2.38 | 60.3 | 2.5 | 64 | 2.5 | 64 | 1.5 | 38 | 0.22 | 5.59 | 1.75 | 44 |
2½ | 2.88 | 73 | 3 | 76 | 3 | 76 | 1.5 | 38 | 0.28 | 7.11 | 2 | 51 |
3 | 3.5 | 88.9 | 3.38 | 86 | 3.38 | 86 | 2 | 51 | 0.3 | 7.62 | 2.5 | 64 |
3½ | 4 | 101.6 | 3.75 | 95 | 3.75 | 95 | 2.5 | 64 | 0.32 | 8.13 | 3 | 76 |
4 | 4.5 | 114.3 | 4.12 | 105 | 4.12 | 105 | 2.5 | 64 | 0.34 | 8.64 | 3 | 76 |
5 | 5.56 | 141.3 | 4.88 | 124 | 4.88 | 124 | 3 | 76 | 0.38 | 9.65 | 3.5 | 89 |
6 | 6.62 | 168.3 | 5.62 | 143 | 5.62 | 143 | 3.5 | 89 | 0.43 | 10.92 | 4 | 102 |
8 | 8.62 | 219.1 | 7 | 178 | 7 | 178 | 4 | 102 | 0.5 | 12.7 | 5 | 127 |
10 | 10.75 | 273 | 8.5 | 216 | 8.5 | 216 | 5 | 127 | 0.5 | 12.7 | 6 | 152 |
12 | 12.75 | 323.8 | 10 | 254 | 10 | 254 | 6 | 152 | 0.5 | 12.7 | 7 | 178 |
14 | 14 | 355.6 | 11 | 279 | 11 | 279 | 6.5 | 165 | 0.5 | 12.7 | 7.5 | 191 |
16 | 16 | 406.4 | 12 | 305 | 12 | 305 | 7 | 178 | 0.5 | 12.7 | 8 | 203 |
18 | 18 | 457.2 | 13.5 | 343 | 13.5 | 343 | 8 | 203 | 0.5 | 12.7 | 9 | 229 |
20 | 20 | 508 | 15 | 381 | 15 | 381 | 9 | 229 | 0.5 | 12.7 | 10 | 254 |
22 | 22 | 558.8 | 16.5 | 419 | 16.5 | 419 | 10 | 254 | 0.5 | 12.7 | 10 | 254 |
24 | 24 | 609.6 | 17 | 432 | 17 | 432 | 10.5 | 267 | 0.5 | 12.7 | 12 | 305 |
26 | 26 | 660.4 | 19.5 | 495 | 19.5 | 495 | 10.5 | 267 | - | - | - | - |
28 | 28 | 711.2 | 20.2 | 521 | 20.2 | 521 | 10.5 | 267 | - | - | - | - |
30 | 30 | 762 | 22 | 559 | 22 | 559 | 10.5 | 267 | - | - | - | - |
32 | 32 | 812.8 | 23.5 | 597 | 23.5 | 597 | 10.5 | 267 | - | - | - | - |
34 | 34 | 863.6 | 25 | 635 | 25 | 635 | 10.5 | 267 | - | - | - | - |
36 | 36 | 914.4 | 26.5 | 673 | 26.5 | 673 | 10.5 | 267 | - | - | - | - |
38 | 38 | 965.2 | 28 | 711 | 28 | 711 | 12 | 305 | - | - | - | - |
40 | 40 | 1016 | 29.5 | 749 | 29.5 | 749 | 12 | 305 | - | - | - | - |
42 | 42 | 1067 | 30 | 762 | 28 | 711 | 12 | 305 | - | - | - | - |
44 | 44 | 1118 | 32 | 813 | 30 | 762 | 13.5 | 343 | - | - | - | - |
46 | 46 | 1168 | 33.5 | 851 | 31.5 | 800 | 13.5 | 343 | - | - | - | - |
48 | 48 | 1219 | 35 | 889 | 33 | 838 | 13.5 | 343 | - | - | - | - |
NOTES:
(1) Outlet dimension M for NPS 26 and larger is recommended but not required.
(2) Length E applies for thickness not exceeding that given in column "Limiting Wall Thickness for Length E"
(3) Length E1 applies for thickness greater than that given in column "Limiting Wall Thickness for Length E" for NPS 24 and smaller.