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| 두께 | 내경 | 두게 | 내경 | 두께 | 내경 | 두께 | 내경 | ||
| 15(1/2") | 21.7 | 2.8 | 16.1 | --- | --- | 2.8 | 16.1 | 3.7 | 14.3 |
| 20(3/4") | 27.2 | 2.8 | 21.6 | --- | --- | 2.9 | 21.4 | 3.9 | 19.4 |
| 25(1") | 34.0 | 3.2 | 27.6 | --- | --- | 3.4 | 27.2 | 4.5 | 25 |
| 32(11/4") | 42.7 | 3.5 | 35.7 | --- | --- | 3.6 | 35.5 | 4.9 | 32.9 |
| 40(11/2") | 48.6 | 3.5 | 41.6 | --- | --- | 3.7 | 41.2 | 5.1 | 38.4 |
| 50(2") | 60.5 | 3.8 | 52.9 | 3.2 | 54.1 | 3.9 | 52.7 | 5.5 | 49.5 |
| 80(3") | 89.1 | 4.2 | 80.7 | 4.5 | 80.1 | 5.5 | 78.1 | 7.6 | 73.9 |
| 100(4") | 114.3 | 4.5 | 105.3 | 4.9 | 104.5 | 6.0 | 102.3 | 8.6 | 97.1 |
| 150(6") | 165.2 | 5.0 | 155.2 | 5.5 | 154.2 | 7.1 | 151 | 11.0 | 143.2 |
| 200(8") | 216.3 | 5.8 | 204.7 | 6.4 | 203.5 | 8.2 | 199.9 | 12.7 | 190.9 |
| 250(10") | 267.4 | 6.6 | 254.2 | 6.4 | 254.6 | 9.3 | 248.8 | 15.1 | 237.2 |
| 300(12") | 318.5 | 6.9 | 304.7 | 6.4 | 305.7 | 10.3 | 297.9 | 17.4 | 283.7 |
| 350(14") | 355.6 | 7.9 | 339.8 | 7.9 | 339.8 | 11.1 | 333.4 | 19.0 | 317.6 |
| 400(16") | 406.4 | 7.9 | 390.6 | 7.9 | 390.6 | 12.7 | 381 | 21.4 | 363.6 |
| 450(18") | 457.2 | --- | --- | 7.9 | 441.4 | 14.3 | 428.6 | 23.8 | 409.6 |
| 500(20") | 508.0 | --- | --- | 9.5 | 489 | 15.1 | 477.8 | 26.2 | 455.8 |
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