Concentric and Eccentric Reducer Dimensions
A reducer changes pipe size in a single butt-welded fitting. Concentric reducers keep both ends on a common centerline; eccentric reducers share a flat side instead, which keeps either the top or the bottom of the line running straight through the size change.
Concentric or eccentric is not a style choice.
On a horizontal line, a concentric reducer creates a high point where vapour collects and a low point where liquid and solids settle. That is why pump suction lines use an eccentric reducer flat side up. It keeps the top of the pipe level so air cannot pocket ahead of the pump and cause cavitation. On vertical lines the distinction stops mattering and concentric is normal.
Flat side up or flat side down.
Flat side up on pump suction, to prevent vapour pockets. Flat side down where you want the line to drain completely and keep solids moving. Getting this backwards is one of the most common and most expensive piping mistakes in rotating equipment work.
389 sizes across 17 schedules · dimensions in inches, weights in pounds · ASME B16.9
Schedule STD
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| ¾ × ½ | 1.05 | 0.824 | 0.113 | 0.84 | 0.622 | 0.109 | 1.50 | 40 | 0.21 |
| 1 × ¾ | 1.32 | 1.054 | 0.133 | 1.05 | 0.824 | 0.113 | 2.00 | 40 | 0.36 |
| 1 × ½ | 1.32 | 1.054 | 0.133 | 0.84 | 0.622 | 0.109 | 2.00 | 40 | 0.36 |
| 1¼ × 1 | 1.66 | 1.380 | 0.140 | 1.32 | 1.054 | 0.133 | 2.00 | 40 | 0.48 |
| 1¼ × ¾ | 1.66 | 1.380 | 0.140 | 1.05 | 0.824 | 0.113 | 2.00 | 40 | 0.42 |
| 1¼ × ½ | 1.66 | 1.380 | 0.140 | 0.84 | 0.622 | 0.109 | 2.00 | 40 | 0.42 |
| 1½ × 1¼ | 1.90 | 1.610 | 0.145 | 1.66 | 1.380 | 0.140 | 2.50 | 40 | 0.65 |
| 1½ × 1 | 1.90 | 1.610 | 0.145 | 1.32 | 1.054 | 0.133 | 2.50 | 40 | 0.57 |
| 1½ × ¾ | 1.90 | 1.610 | 0.145 | 1.05 | 0.824 | 0.113 | 2.50 | 40 | 0.56 |
| 1½ × ½ | 1.90 | 1.610 | 0.145 | 0.84 | 0.622 | 0.109 | 2.50 | 40 | 0.56 |
| 2 × 1½ | 2.38 | 2.072 | 0.154 | 1.90 | 1.610 | 0.145 | 3.00 | 40 | 0.94 |
| 2 × 1¼ | 2.38 | 2.072 | 0.154 | 1.66 | 1.380 | 0.140 | 3.00 | 40 | 0.88 |
| 2 × 1 | 2.38 | 2.072 | 0.154 | 1.32 | 1.054 | 0.133 | 3.00 | 40 | 0.81 |
| 2 × ¾ | 2.38 | 2.072 | 0.154 | 1.05 | 0.824 | 0.113 | 3.00 | 40 | 0.74 |
| 2½ × 2 | 2.88 | 2.474 | 0.203 | 2.38 | 2.072 | 0.154 | 3.50 | 40 | 1.60 |
| 2½ × 1½ | 2.88 | 2.474 | 0.203 | 1.90 | 1.610 | 0.145 | 3.50 | 40 | 1.50 |
| 2½ × 1¼ | 2.88 | 2.474 | 0.203 | 1.66 | 1.380 | 0.140 | 3.50 | 40 | 1.40 |
| 2½ × 1 | 2.88 | 2.474 | 0.203 | 1.32 | 1.054 | 0.133 | 3.50 | 40 | 1.30 |
| 3 × 2½ | 3.50 | 3.068 | 0.216 | 2.88 | 2.474 | 0.203 | 3.50 | 40 | 2.20 |
| 3 × 2 | 3.50 | 3.068 | 0.216 | 2.38 | 2.072 | 0.154 | 3.50 | 40 | 2.00 |
| 3 × 1½ | 3.50 | 3.068 | 0.216 | 1.90 | 1.610 | 0.145 | 3.50 | 40 | 1.90 |
| 3 × 1¼ | 3.50 | 3.068 | 0.216 | 1.66 | 1.380 | 0.140 | 3.50 | 40 | 1.80 |
| 3 × 1 | 3.50 | 3.068 | 0.216 | 1.32 | 1.054 | 0.133 | 3.50 | 40 | 1.70 |
| 3½ × 3 | 4.00 | 3.548 | 0.226 | 3.50 | 3.068 | 0.216 | 4.00 | 40 | 2.80 |
| 3½ × 2½ | 4.00 | 3.548 | 0.226 | 2.88 | 2.474 | 0.203 | 4.00 | 40 | 2.70 |
Schedule STD (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 3½ × 2 | 4.00 | 3.548 | 0.226 | 2.38 | 2.072 | 0.154 | 4.00 | 40 | 2.60 |
| 3½ × 1½ | 4.00 | 3.548 | 0.226 | 1.90 | 1.610 | 0.145 | 4.00 | 40 | 2.60 |
| 3½ × 1¼ | 4.00 | 3.548 | 0.226 | 1.66 | 1.380 | 0.140 | 4.00 | 40 | 2.50 |
| 4 × 3½ | 4.50 | 4.026 | 0.237 | 4.00 | 3.548 | 0.226 | 4.00 | 40 | 3.50 |
| 4 × 3 | 4.50 | 4.026 | 0.237 | 3.50 | 3.068 | 0.216 | 4.00 | 40 | 3.30 |
| 4 × 2½ | 4.50 | 4.026 | 0.237 | 2.88 | 2.474 | 0.203 | 4.00 | 40 | 3.20 |
| 4 × 2 | 4.50 | 4.026 | 0.237 | 2.38 | 2.072 | 0.154 | 4.00 | 40 | 3.10 |
| 4 × 1½ | 4.50 | 4.026 | 0.237 | 1.90 | 1.610 | 0.145 | 4.00 | 40 | 3.00 |
| 4 × 1¼ | 4.50 | 4.026 | 0.237 | 1.66 | 1.380 | 0.140 | 4.00 | 40 | 3.00 |
| 4 × 1 | 4.50 | 4.026 | 0.237 | 1.32 | 1.054 | 0.133 | 4.00 | 40 | 2.80 |
| 5 × 4 | 5.56 | 5.044 | 0.258 | 4.50 | 4.026 | 0.237 | 5.00 | 40 | 5.50 |
| 5 × 3½ | 5.56 | 5.044 | 0.258 | 4.00 | 3.548 | 0.226 | 5.00 | 40 | 5.30 |
| 5 × 3 | 5.56 | 5.044 | 0.258 | 3.50 | 3.068 | 0.216 | 5.00 | 40 | 5.10 |
| 5 × 2½ | 5.56 | 5.044 | 0.258 | 2.88 | 2.474 | 0.203 | 5.00 | 40 | 4.80 |
| 5 × 2 | 5.56 | 5.044 | 0.258 | 2.38 | 2.072 | 0.154 | 5.00 | 40 | 4.70 |
| 6 × 5 | 6.62 | 6.060 | 0.280 | 5.56 | 5.044 | 0.258 | 5.50 | 40 | 7.60 |
| 6 × 4 | 6.62 | 6.060 | 0.280 | 4.50 | 4.026 | 0.237 | 5.50 | 40 | 7.40 |
| 6 × 3½ | 6.62 | 6.060 | 0.280 | 4.00 | 3.548 | 0.226 | 5.50 | 40 | 7.10 |
| 6 × 3 | 6.62 | 6.060 | 0.280 | 3.50 | 3.068 | 0.216 | 5.50 | 40 | 6.90 |
| 6 × 2½ | 6.62 | 6.060 | 0.280 | 2.88 | 2.474 | 0.203 | 5.50 | 40 | 6.60 |
| 6 × 2 | 6.62 | 6.060 | 0.280 | 2.38 | 2.072 | 0.154 | 5.50 | 40 | 6.50 |
| 8 × 6 | 8.62 | 7.976 | 0.322 | 6.62 | 6.060 | 0.280 | 6.00 | 40 | 12.30 |
| 8 × 5 | 8.62 | 7.976 | 0.322 | 5.56 | 5.044 | 0.258 | 6.00 | 40 | 11.50 |
| 8 × 4 | 8.62 | 7.976 | 0.322 | 4.50 | 4.026 | 0.237 | 6.00 | 40 | 10.80 |
| 8 × 3½ | 8.62 | 7.976 | 0.322 | 4.00 | 3.548 | 0.226 | 6.00 | 40 | 10.60 |
Schedule STD (cont.)
| Nom. Size † | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 8 × 3 | 8.62 | 7.976 | 0.322 | 3.50 | 3.068 | 0.216 | 6.00 | 40 | 9.80 |
| 10 × 8 | 10.75 | 10.020 | 0.365 | 8.62 | 7.976 | 0.322 | 7.00 | 40 | 22.10 |
| 10 × 6 | 10.75 | 10.020 | 0.365 | 6.62 | 6.060 | 0.280 | 7.00 | 40 | 20.70 |
| 10 × 5 | 10.75 | 10.020 | 0.365 | 5.56 | 5.044 | 0.258 | 7.00 | 40 | 19.50 |
| 10 × 4 | 10.75 | 10.020 | 0.365 | 4.50 | 4.026 | 0.237 | 7.00 | 40 | 18.40 |
| 12 × 10 | 12.75 | 12.000 | 0.375 | 10.75 | 10.020 | 0.365 | 8.00 | * | 32.40 |
| 12 × 8 | 12.75 | 12.000 | 0.375 | 8.62 | 7.976 | 0.322 | 8.00 | * | 30.50 |
| 12 × 6 | 12.75 | 12.000 | 0.375 | 6.62 | 6.060 | 0.280 | 8.00 | * | 29.50 |
| 12 × 5 | 12.75 | 12.000 | 0.375 | 5.56 | 5.044 | 0.258 | 8.00 | * | 27.80 |
| 12 × 4 | 12.75 | 12.000 | 0.375 | 4.50 | 4.026 | 0.237 | 8.00 | * | 26.20 |
| 14 × 12 | 14.00 | 13.250 | 0.375 | 12.75 | 12.000 | 0.375 | 13.00 | * | 63.10 |
| 14 × 10 | 14.00 | 13.250 | 0.375 | 10.75 | 10.020 | 0.365 | 13.00 | * | 61.40 |
| 14 × 8 | 14.00 | 13.250 | 0.375 | 8.62 | 7.976 | 0.322 | 13.00 | * | 60.00 |
| 14 × 6 | 14.00 | 13.250 | 0.375 | 6.62 | 6.060 | 0.280 | 13.00 | * | 59.20 |
| 16 × 14 | 16.00 | 15.250 | 0.375 | 14.00 | 13.250 | 0.375 | 14.00 | * | 75.40 |
| 16 × 12 | 16.00 | 15.250 | 0.375 | 12.75 | 12.000 | 0.375 | 14.00 | * | 72.70 |
| 16 × 10 | 16.00 | 15.250 | 0.375 | 10.75 | 10.020 | 0.365 | 14.00 | * | 71.10 |
| 16 × 8 | 16.00 | 15.250 | 0.375 | 8.62 | 7.976 | 0.322 | 14.00 | * | 69.40 |
| 16 × 6 | 16.00 | 15.250 | 0.375 | 6.62 | 6.060 | 0.280 | 14.00 | * | 67.40 |
| 18 × 16 | 18.00 | 17.250 | 0.375 | 16.00 | 15.250 | 0.375 | 15.00 | * | 87.30 |
| 18 × 14 | 18.00 | 17.250 | 0.375 | 14.00 | 13.250 | 0.375 | 15.00 | * | 86.00 |
| 18 × 12 | 18.00 | 17.250 | 0.375 | 12.75 | 12.000 | 0.375 | 15.00 | * | 84.80 |
| 18 × 10 | 18.00 | 17.250 | 0.375 | 10.75 | 10.020 | 0.365 | 15.00 | * | 83.70 |
| 18 × 8 | 18.00 | 17.250 | 0.375 | 8.62 | 7.976 | 0.322 | 15.00 | * | 81.75 |
| 20 × 18 | 20.00 | 19.250 | 0.375 | 18.00 | 17.250 | 0.375 | 20.00 | * | 123.00 |
Schedule STD (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 20 × 16 | 20.00 | 19.250 | 0.375 | 16.00 | 15.250 | 0.375 | 20.00 | * | 121.00 |
| 20 × 14 | 20.00 | 19.250 | 0.375 | 14.00 | 13.250 | 0.375 | 20.00 | * | 119.00 |
| 20 × 12 | 20.00 | 19.250 | 0.375 | 12.75 | 12.000 | 0.375 | 20.00 | * | 118.00 |
| 20 × 10 | 20.00 | 19.250 | 0.375 | 10.75 | 10.020 | 0.365 | 20.00 | * | 117.00 |
| 24 × 20 | 24.00 | 23.250 | 0.375 | 20.00 | 19.250 | 0.375 | 20.00 | * | 156.00 |
| 24 × 18 | 24.00 | 23.250 | 0.375 | 18.00 | 17.250 | 0.375 | 20.00 | * | 153.00 |
| 24 × 16 | 24.00 | 23.250 | 0.375 | 16.00 | 15.250 | 0.375 | 20.00 | * | 150.00 |
| 24 × 14 | 24.00 | 23.250 | 0.375 | 14.00 | 13.250 | 0.375 | 20.00 | * | 147.00 |
| 24 × 12 | 24.00 | 23.250 | 0.375 | 12.75 | 12.000 | 0.375 | 20.00 | * | 144.00 |
| 24 × 10 | 24.00 | 23.250 | 0.375 | 10.75 | 10.020 | 0.365 | 20.00 | * | 141.00 |
| 30 × 24 | 30.00 | 29.250 | 0.375 | 24.00 | 23.250 | 0.375 | 24.00 | * | 315.00 |
| 30 × 20 | 30.00 | 29.250 | 0.375 | 20.00 | 19.250 | 0.375 | 24.00 | * | 315.00 |
| 30 × 18 | 30.00 | 29.250 | 0.375 | 18.00 | 17.250 | 0.375 | 24.00 | * | 315.00 |
| 36 × 30 | 36.00 | 35.250 | 0.375 | 30.00 | 29.250 | 0.375 | 24.00 | * | 379.00 |
| 36 × 24 | 36.00 | 35.250 | 0.375 | 24.00 | 23.250 | 0.375 | 24.00 | * | 379.00 |
| 36 × 20 | 36.00 | 35.250 | 0.375 | 20.00 | 19.250 | 0.375 | 24.00 | * | 379.00 |
| 42 × 36 | 42.00 | 41.250 | 0.375 | 36.00 | 35.250 | 0.375 | 24.00 | * | 443.00 |
| 42 × 30 | 42.00 | 41.250 | 0.375 | 30.00 | 29.250 | 0.375 | 24.00 | * | 443.00 |
| 42 × 24 | 42.00 | 41.250 | 0.375 | 24.00 | 23.250 | 0.375 | 24.00 | * | 443.00 |
| 48 × 42 | 48.00 | 47.250 | 0.375 | 42.00 | 41.250 | 0.375 | 28.00 | * | 525.00 |
| 48 × 36 | 48.00 | 47.250 | 0.375 | 36.00 | 35.250 | 0.375 | 28.00 | * | 525.00 |
| 48 × 30 | 48.00 | 47.250 | 0.375 | 30.00 | 29.250 | 0.375 | 28.00 | * | 525.00 |
| 48 × 24 | 48.00 | 47.250 | 0.375 | 24.00 | 23.250 | 0.375 | 28.00 | * | 525.00 |
Schedule XS
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| ¾ × ½ | 1.05 | 0.742 | 0.154 | 0.84 | 0.546 | 0.147 | 1.50 | 80 | 0.25 |
| 1 × ¾ | 1.32 | 0.962 | 0.179 | 1.05 | 0.742 | 0.154 | 2.00 | 80 | 0.43 |
| 1 × ½ | 1.32 | 0.962 | 0.179 | 0.84 | 0.546 | 0.147 | 2.00 | 80 | 0.42 |
| 1¼ × 1 | 1.66 | 1.278 | 0.191 | 1.32 | 0.962 | 0.179 | 2.00 | 80 | 0.57 |
| 1¼ × ¾ | 1.66 | 1.278 | 0.191 | 1.05 | 0.742 | 0.154 | 2.00 | 80 | 0.53 |
| 1¼ × ½ | 1.66 | 1.278 | 0.191 | 0.84 | 0.546 | 0.147 | 2.00 | 80 | 0.50 |
| 1½ × 1¼ | 1.90 | 1.500 | 0.200 | 1.66 | 1.278 | 0.191 | 2.50 | 80 | 0.78 |
| 1½ × 1 | 1.90 | 1.500 | 0.200 | 1.32 | 0.962 | 0.179 | 2.50 | 80 | 0.72 |
| 1½ × ¾ | 1.90 | 1.500 | 0.200 | 1.05 | 0.742 | 0.154 | 2.50 | 80 | 0.65 |
| 1½ × ½ | 1.90 | 1.500 | 0.200 | 0.84 | 0.546 | 0.147 | 2.50 | 80 | 0.65 |
| 2 × 1½ | 2.38 | 1.944 | 0.218 | 1.90 | 1.500 | 0.200 | 3.00 | 80 | 1.20 |
| 2 × 1¼ | 2.38 | 1.944 | 0.218 | 1.66 | 1.278 | 0.191 | 3.00 | 80 | 1.10 |
| 2 × 1 | 2.38 | 1.944 | 0.218 | 1.32 | 0.962 | 0.179 | 3.00 | 80 | 1.00 |
| 2 × ¾ | 2.38 | 1.944 | 0.218 | 1.05 | 0.742 | 0.154 | 3.00 | 80 | 0.94 |
| 2½ × 2 | 2.88 | 2.328 | 0.276 | 2.38 | 1.944 | 0.218 | 3.50 | 80 | 2.10 |
| 2½ × 1½ | 2.88 | 2.328 | 0.276 | 1.90 | 1.500 | 0.200 | 3.50 | 80 | 1.90 |
| 2½ × 1¼ | 2.88 | 2.328 | 0.276 | 1.66 | 1.278 | 0.191 | 3.50 | 80 | 1.70 |
| 2½ × 1 | 2.88 | 2.328 | 0.276 | 1.32 | 0.962 | 0.179 | 3.50 | 80 | 1.50 |
| 3 × 2½ | 3.50 | 2.900 | 0.300 | 2.88 | 2.328 | 0.276 | 3.50 | 80 | 2.80 |
| 3 × 2 | 3.50 | 2.900 | 0.300 | 2.38 | 1.944 | 0.218 | 3.50 | 80 | 2.60 |
| 3 × 1½ | 3.50 | 2.900 | 0.300 | 1.90 | 1.500 | 0.200 | 3.50 | 80 | 2.40 |
| 3 × 1¼ | 3.50 | 2.900 | 0.300 | 1.66 | 1.278 | 0.191 | 3.50 | 80 | 2.30 |
| 3 × 1 | 3.50 | 2.900 | 0.300 | 1.32 | 0.962 | 0.179 | 3.50 | 80 | 2.20 |
| 3½ × 3 | 4.00 | 3.364 | 0.318 | 3.50 | 2.900 | 0.300 | 4.00 | 80 | 3.70 |
| 3½ × 2½ | 4.00 | 3.364 | 0.318 | 2.88 | 2.328 | 0.276 | 4.00 | 80 | 3.50 |
Schedule XS (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 3½ × 2 | 4.00 | 3.364 | 0.318 | 2.38 | 1.944 | 0.218 | 4.00 | 80 | 3.30 |
| 3½ × 1½ | 4.00 | 3.364 | 0.318 | 1.90 | 1.500 | 0.200 | 4.00 | 80 | 3.20 |
| 3½ × 1¼ | 4.00 | 3.364 | 0.318 | 1.66 | 1.278 | 0.191 | 4.00 | 80 | 3.20 |
| 4 × 3½ | 4.50 | 3.826 | 0.337 | 4.00 | 3.364 | 0.318 | 4.00 | 80 | 4.90 |
| 4 × 3 | 4.50 | 3.826 | 0.337 | 3.50 | 2.900 | 0.300 | 4.00 | 80 | 4.70 |
| 4 × 2½ | 4.50 | 3.826 | 0.337 | 2.88 | 2.328 | 0.276 | 4.00 | 80 | 4.60 |
| 4 × 2 | 4.50 | 3.826 | 0.337 | 2.38 | 1.944 | 0.218 | 4.00 | 80 | 4.30 |
| 4 × 1½ | 4.50 | 3.826 | 0.337 | 1.90 | 1.500 | 0.200 | 4.00 | 80 | 4.20 |
| 4 × 1¼ | 4.50 | 3.826 | 0.337 | 1.66 | 1.278 | 0.191 | 4.00 | 80 | 4.10 |
| 4 × 1 | 4.50 | 3.826 | 0.337 | 1.32 | 0.962 | 0.179 | 4.00 | 80 | 4.00 |
| 5 × 4 | 5.56 | 4.810 | 0.375 | 4.50 | 3.826 | 0.337 | 5.00 | 80 | 7.50 |
| 5 × 3½ | 5.56 | 4.810 | 0.375 | 4.00 | 3.364 | 0.318 | 5.00 | 80 | 6.90 |
| 5 × 3 | 5.56 | 4.810 | 0.375 | 3.50 | 2.900 | 0.300 | 5.00 | 80 | 6.30 |
| 5 × 2½ | 5.56 | 4.810 | 0.375 | 2.88 | 2.328 | 0.276 | 5.00 | 80 | 6.10 |
| 5 × 2 | 5.56 | 4.810 | 0.375 | 2.38 | 1.944 | 0.218 | 5.00 | 80 | 6.00 |
| 6 × 5 | 6.62 | 5.756 | 0.432 | 5.56 | 4.810 | 0.375 | 5.50 | 80 | 11.50 |
| 6 × 4 | 6.62 | 5.756 | 0.432 | 4.50 | 3.826 | 0.337 | 5.50 | 80 | 10.70 |
| 6 × 3½ | 6.62 | 5.756 | 0.432 | 4.00 | 3.364 | 0.318 | 5.50 | 80 | 10.00 |
| 6 × 3 | 6.62 | 5.756 | 0.432 | 3.50 | 2.900 | 0.300 | 5.50 | 80 | 9.70 |
| 6 × 2½ | 6.62 | 5.756 | 0.432 | 2.88 | 2.328 | 0.276 | 5.50 | 80 | 9.10 |
| 6 × 2 | 6.62 | 5.756 | 0.432 | 2.38 | 1.944 | 0.218 | 5.50 | 80 | 8.60 |
| 8 × 6 | 8.62 | 7.620 | 0.500 | 6.62 | 5.756 | 0.432 | 6.00 | 80 | 18.80 |
| 8 × 5 | 8.62 | 7.620 | 0.500 | 5.56 | 4.810 | 0.375 | 6.00 | 80 | 17.60 |
| 8 × 4 | 8.62 | 7.620 | 0.500 | 4.50 | 3.826 | 0.337 | 6.00 | 80 | 17.00 |
| 8 × 3½ | 8.62 | 7.620 | 0.500 | 4.00 | 3.364 | 0.318 | 6.00 | 80 | 15.90 |
Schedule XS (cont.)
| Nom. Size † | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 8 × 3 | 8.62 | 7.620 | 0.500 | 3.50 | 2.900 | 0.300 | 6.00 | 80 | 15.00 |
| 10 × 8 | 10.75 | 9.750 | 0.500 | 8.62 | 7.620 | 0.500 | 7.00 | * | 29.40 |
| 10 × 6 | 10.75 | 9.750 | 0.500 | 6.62 | 5.756 | 0.432 | 7.00 | * | 28.30 |
| 10 × 5 | 10.75 | 9.750 | 0.500 | 5.56 | 4.810 | 0.375 | 7.00 | * | 26.90 |
| 10 × 4 | 10.75 | 9.750 | 0.500 | 4.50 | 3.826 | 0.337 | 7.00 | * | 24.20 |
| 12 × 10 | 12.75 | 11.750 | 0.500 | 10.75 | 9.750 | 0.500 | 8.00 | * | 41.50 |
| 12 × 8 | 12.75 | 11.750 | 0.500 | 8.62 | 7.620 | 0.500 | 8.00 | * | 38.60 |
| 12 × 6 | 12.75 | 11.750 | 0.500 | 6.62 | 5.756 | 0.432 | 8.00 | * | 37.40 |
| 12 × 5 | 12.75 | 11.750 | 0.500 | 5.56 | 4.810 | 0.375 | 8.00 | * | 36.30 |
| 12 × 4 | 12.75 | 11.750 | 0.500 | 4.50 | 3.826 | 0.337 | 8.00 | * | 34.70 |
| 14 × 12 | 14.00 | 13.000 | 0.500 | 12.75 | 11.750 | 0.500 | 13.00 | * | 81.00 |
| 14 × 10 | 14.00 | 13.000 | 0.500 | 10.75 | 9.750 | 0.500 | 13.00 | * | 76.70 |
| 14 × 8 | 14.00 | 13.000 | 0.500 | 8.62 | 7.620 | 0.500 | 13.00 | * | 74.60 |
| 14 × 6 | 14.00 | 13.000 | 0.500 | 6.62 | 5.756 | 0.432 | 13.00 | * | 72.30 |
| 16 × 14 | 16.00 | 15.000 | 0.500 | 14.00 | 13.000 | 0.500 | 14.00 | * | 98.00 |
| 16 × 12 | 16.00 | 15.000 | 0.500 | 12.75 | 11.750 | 0.500 | 14.00 | * | 95.80 |
| 16 × 10 | 16.00 | 15.000 | 0.500 | 10.75 | 9.750 | 0.500 | 14.00 | * | 93.30 |
| 16 × 8 | 16.00 | 15.000 | 0.500 | 8.62 | 7.620 | 0.500 | 14.00 | * | 91.10 |
| 16 × 6 | 16.00 | 15.000 | 0.500 | 6.62 | 5.756 | 0.432 | 14.00 | * | 89.80 |
| 18 × 16 | 18.00 | 17.000 | 0.500 | 16.00 | 15.000 | 0.500 | 15.00 | * | 118.00 |
| 18 × 14 | 18.00 | 17.000 | 0.500 | 14.00 | 13.000 | 0.500 | 15.00 | * | 117.00 |
| 18 × 12 | 18.00 | 17.000 | 0.500 | 12.75 | 11.750 | 0.500 | 15.00 | * | 115.00 |
| 18 × 10 | 18.00 | 17.000 | 0.500 | 10.75 | 9.750 | 0.500 | 15.00 | * | 113.00 |
| 18 × 8 | 18.00 | 17.000 | 0.500 | 8.62 | 7.620 | 0.500 | 15.00 | * | 100.00 |
| 20 × 18 | 20.00 | 19.000 | 0.500 | 18.00 | 17.000 | 0.500 | 20.00 | * | 162.00 |
Schedule XS (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 20 × 16 | 20.00 | 19.000 | 0.500 | 16.00 | 15.000 | 0.500 | 20.00 | * | 159.00 |
| 20 × 14 | 20.00 | 19.000 | 0.500 | 14.00 | 13.000 | 0.500 | 20.00 | * | 157.00 |
| 20 × 12 | 20.00 | 19.000 | 0.500 | 12.75 | 11.750 | 0.500 | 20.00 | * | 155.00 |
| 20 × 10 | 20.00 | 19.000 | 0.500 | 10.75 | 9.750 | 0.500 | 20.00 | * | 152.00 |
| 24 × 20 | 24.00 | 23.000 | 0.500 | 20.00 | 19.000 | 0.500 | 20.00 | * | 201.00 |
| 24 × 18 | 24.00 | 23.000 | 0.500 | 18.00 | 17.000 | 0.500 | 20.00 | * | 197.00 |
| 24 × 16 | 24.00 | 23.000 | 0.500 | 16.00 | 15.000 | 0.500 | 20.00 | * | 194.00 |
| 24 × 14 | 24.00 | 23.000 | 0.500 | 14.00 | 13.000 | 0.500 | 20.00 | * | 190.00 |
| 24 × 12 | 24.00 | 23.000 | 0.500 | 12.75 | 11.750 | 0.500 | 20.00 | * | 188.00 |
| 24 × 10 | 24.00 | 23.000 | 0.500 | 10.75 | 9.750 | 0.500 | 20.00 | * | 186.00 |
| 30 × 24 | 30.00 | 29.000 | 0.500 | 24.00 | 23.000 | 0.500 | 24.00 | * | 315.00 |
| 30 × 20 | 30.00 | 29.000 | 0.500 | 20.00 | 19.000 | 0.500 | 24.00 | * | 315.00 |
| 30 × 18 | 30.00 | 29.000 | 0.500 | 18.00 | 17.000 | 0.500 | 24.00 | * | 315.00 |
| 36 × 30 | 36.00 | 35.000 | 0.500 | 30.00 | 29.000 | 0.500 | 24.00 | * | 379.00 |
| 36 × 24 | 36.00 | 35.000 | 0.500 | 24.00 | 23.000 | 0.500 | 24.00 | * | 379.00 |
| 36 × 20 | 36.00 | 35.000 | 0.500 | 20.00 | 19.000 | 0.500 | 24.00 | * | 379.00 |
| 42 × 36 | 42.00 | 41.000 | 0.500 | 36.00 | 35.000 | 0.500 | 24.00 | * | 443.00 |
| 42 × 30 | 42.00 | 41.000 | 0.500 | 30.00 | 29.000 | 0.500 | 24.00 | * | 443.00 |
| 42 × 24 | 42.00 | 41.000 | 0.500 | 24.00 | 23.000 | 0.500 | 24.00 | * | 443.00 |
| 48 × 42 | 48.00 | 47.000 | 0.500 | 42.00 | 41.000 | 0.500 | 28.00 | * | 525.00 |
| 48 × 36 | 48.00 | 47.000 | 0.500 | 36.00 | 35.000 | 0.500 | 28.00 | * | 525.00 |
| 48 × 30 | 48.00 | 47.000 | 0.500 | 30.00 | 29.000 | 0.500 | 28.00 | * | 525.00 |
| 48 × 24 | 48.00 | 47.000 | 0.500 | 24.00 | 23.000 | 0.500 | 28.00 | * | 525.00 |
Schedule 40
| Nom. Size | O.D. FOR DIMENSION SPECIFICATIONS ½ | LARGE DIAMETER I.D. | T | O.D. ″ THROUGH 10 | SMALL DIAMETER I.D. ″ | T REFER TO SCHEDULE STD | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 12 × 10 | 12.75 | 11.938 | 0.406 | 10.75 | 10.020 | 0.365 | 8.00 | 40 | 35.80 |
| 12 × 8 | 12.75 | 11.938 | 0.406 | 8.62 | 7.976 | 0.322 | 8.00 | 40 | 35.80 |
| 12 × 6 | 12.75 | 11.938 | 0.406 | 6.62 | 6.060 | 0.280 | 8.00 | 40 | 35.80 |
| 12 × 5 | 12.75 | 11.938 | 0.406 | 5.56 | 5.044 | 0.258 | 8.00 | 40 | 35.80 |
| 12 × 4 | 12.75 | 11.938 | 0.406 | 4.50 | 4.026 | 0.237 | 8.00 | 40 | 35.80 |
| 14 × 12 | 14.00 | 13.124 | 0.438 | 12.75 | 11.938 | 0.406 | 13.00 | 40 | 68.60 |
| 14 × 10 | 14.00 | 13.124 | 0.438 | 10.75 | 10.020 | 0.365 | 13.00 | 40 | 68.60 |
| 14 × 8 | 14.00 | 13.124 | 0.438 | 8.62 | 7.976 | 0.322 | 13.00 | 40 | 68.60 |
| 14 × 6 | 14.00 | 13.124 | 0.438 | 6.62 | 6.060 | 0.280 | 13.00 | 40 | 68.60 |
| 16 × 14 | 16.00 | 15.000 | 0.500 | 14.00 | 13.124 | 0.438 | 14.00 | 40 | 96.50 |
| 16 × 12 | 16.00 | 15.000 | 0.500 | 12.75 | 11.938 | 0.406 | 14.00 | 40 | 96.50 |
| 16 × 10 | 16.00 | 15.000 | 0.500 | 10.75 | 10.020 | 0.365 | 14.00 | 40 | 96.50 |
| 16 × 8 | 16.00 | 15.000 | 0.500 | 8.62 | 7.976 | 0.322 | 14.00 | 40 | 96.50 |
| 16 × 6 | 16.00 | 15.000 | 0.500 | 6.62 | 6.060 | 0.280 | 14.00 | 40 | 96.50 |
| 18 × 16 | 18.00 | 16.876 | 0.562 | 16.00 | 15.000 | 0.500 | 15.00 | 40 | 131.00 |
| 18 × 14 | 18.00 | 16.876 | 0.562 | 14.00 | 13.124 | 0.438 | 15.00 | 40 | 131.00 |
Schedule 40 (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 18 × 12 | 18.00 | 16.876 | 0.562 | 12.75 | 11.938 | 0.406 | 15.00 | 40 | 131.00 |
| 18 × 10 | 18.00 | 16.876 | 0.562 | 10.75 | 10.020 | 0.365 | 15.00 | 40 | 131.00 |
| 18 × 8 | 18.00 | 16.876 | 0.562 | 8.62 | 7.976 | 0.322 | 15.00 | 40 | 131.00 |
| 20 × 18 | 20.00 | 18.812 | 0.594 | 18.00 | 16.876 | 0.562 | 20.00 | 40 | 205.00 |
| 20 × 16 | 20.00 | 18.812 | 0.594 | 16.00 | 15.000 | 0.500 | 20.00 | 40 | 205.00 |
| 20 × 14 | 20.00 | 18.812 | 0.594 | 14.00 | 13.124 | 0.438 | 20.00 | 40 | 205.00 |
| 20 × 12 | 20.00 | 18.812 | 0.594 | 12.75 | 11.938 | 0.406 | 20.00 | 40 | 205.00 |
| 20 × 10 | 20.00 | 18.812 | 0.594 | 10.75 | 10.020 | 0.365 | 20.00 | 40 | 205.00 |
| 20 × 8 | 20.00 | 18.812 | 0.594 | 8.62 | 7.976 | 0.322 | 20.00 | 40 | 205.00 |
| 24 × 20 | 24.00 | 22.624 | 0.688 | 20.00 | 18.812 | 0.594 | 20.00 | 40 | 285.00 |
| 24 × 18 | 24.00 | 22.624 | 0.688 | 18.00 | 16.876 | 0.562 | 20.00 | 40 | 285.00 |
| 24 × 16 | 24.00 | 22.624 | 0.688 | 16.00 | 15.000 | 0.500 | 20.00 | 40 | 285.00 |
| 24 × 14 | 24.00 | 22.624 | 0.688 | 14.00 | 13.124 | 0.438 | 20.00 | 40 | 285.00 |
| 24 × 12 | 24.00 | 22.624 | 0.688 | 12.75 | 11.938 | 0.406 | 20.00 | 40 | 285.00 |
| 24 × 10 | 24.00 | 22.624 | 0.688 | 10.75 | 10.020 | 0.365 | 20.00 | 40 | 285.00 |
Schedule 80
| Nom. Size | O.D. FOR DIMENSION SPECIFICATIONS ½ | LARGE DIAMETER I.D. | T | O.D. ″ THROUGH 8 | SMALL DIAMETER I.D. ″ | T REFER TO SCHEDULE XS | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 10 × 8 | 10.75 | 9.562 | 0.594 | 8.62 | 7.620 | 0.500 | 7.00 | 80 | 37.50 |
| 10 × 6 | 10.75 | 9.562 | 0.594 | 6.62 | 5.756 | 0.432 | 7.00 | 80 | 37.50 |
| 10 × 5 | 10.75 | 9.562 | 0.594 | 5.56 | 4.810 | 0.375 | 7.00 | 80 | 37.50 |
| 10 × 4 | 10.75 | 9.562 | 0.594 | 4.50 | 3.826 | 0.337 | 7.00 | 80 | 37.50 |
| 12 × 10 | 12.75 | 11.374 | 0.688 | 10.75 | 9.562 | 0.594 | 8.00 | 80 | 59.00 |
| 12 × 8 | 12.75 | 11.374 | 0.688 | 8.62 | 7.620 | 0.500 | 8.00 | 80 | 59.00 |
| 12 × 6 | 12.75 | 11.374 | 0.688 | 6.62 | 5.756 | 0.432 | 8.00 | 80 | 59.00 |
| 12 × 5 | 12.75 | 11.374 | 0.688 | 5.56 | 4.810 | 0.375 | 8.00 | 80 | 59.00 |
| 12 × 4 | 12.75 | 11.374 | 0.688 | 4.50 | 3.826 | 0.337 | 8.00 | 80 | 59.00 |
| 14 × 12 | 14.00 | 12.500 | 0.750 | 12.75 | 11.374 | 0.688 | 13.00 | 80 | 115.00 |
| 14 × 10 | 14.00 | 12.500 | 0.750 | 10.75 | 9.562 | 0.594 | 13.00 | 80 | 115.00 |
| 14 × 8 | 14.00 | 12.500 | 0.750 | 8.62 | 7.620 | 0.500 | 13.00 | 80 | 115.00 |
| 14 × 6 | 14.00 | 12.500 | 0.750 | 6.62 | 5.756 | 0.432 | 13.00 | 80 | 115.00 |
| 16 × 14 | 16.00 | 14.312 | 0.844 | 14.00 | 12.500 | 0.750 | 14.00 | 80 | 159.00 |
| 16 × 12 | 16.00 | 14.312 | 0.844 | 12.75 | 11.374 | 0.688 | 14.00 | 80 | 159.00 |
| 16 × 10 | 16.00 | 14.312 | 0.844 | 10.75 | 9.562 | 0.594 | 14.00 | 80 | 159.00 |
| 16 × 8 | 16.00 | 14.312 | 0.844 | 8.62 | 7.620 | 0.500 | 14.00 | 80 | 159.00 |
| 16 × 6 | 16.00 | 14.312 | 0.844 | 6.62 | 5.756 | 0.432 | 14.00 | 80 | 159.00 |
Schedule 80 (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 18 × 16 | 18.00 | 16.124 | 0.938 | 16.00 | 14.312 | 0.844 | 15.00 | 80 | 213.00 |
| 18 × 14 | 18.00 | 16.124 | 0.938 | 14.00 | 12.500 | 0.750 | 15.00 | 80 | 213.00 |
| 18 × 12 | 18.00 | 16.124 | 0.938 | 12.75 | 11.374 | 0.688 | 15.00 | 80 | 213.00 |
| 18 × 10 | 18.00 | 16.124 | 0.938 | 10.75 | 9.562 | 0.594 | 15.00 | 80 | 213.00 |
| 18 × 8 | 18.00 | 16.124 | 0.938 | 8.62 | 7.620 | 0.500 | 15.00 | 80 | 213.00 |
| 20 × 18 | 20.00 | 17.938 | 1.031 | 18.00 | 16.124 | 0.938 | 20.00 | 80 | 348.00 |
| 20 × 16 | 20.00 | 17.938 | 1.031 | 16.00 | 14.312 | 0.844 | 20.00 | 80 | 348.00 |
| 20 × 14 | 20.00 | 17.938 | 1.031 | 14.00 | 12.500 | 0.750 | 20.00 | 80 | 348.00 |
| 20 × 12 | 20.00 | 17.938 | 1.031 | 12.75 | 11.374 | 0.688 | 20.00 | 80 | 348.00 |
| 20 × 10 | 20.00 | 17.938 | 1.031 | 10.75 | 9.562 | 0.594 | 20.00 | 80 | 348.00 |
| 20 × 8 | 20.00 | 17.938 | 1.031 | 8.62 | 7.620 | 0.500 | 20.00 | 80 | 348.00 |
| 24 × 20 | 24.00 | 21.562 | 1.219 | 20.00 | 17.938 | 1.031 | 20.00 | 80 | 494.00 |
| 24 × 18 | 24.00 | 21.562 | 1.219 | 18.00 | 16.124 | 0.938 | 20.00 | 80 | 494.00 |
| 24 × 16 | 24.00 | 21.562 | 1.219 | 16.00 | 14.312 | 0.844 | 20.00 | 80 | 494.00 |
| 24 × 14 | 24.00 | 21.562 | 1.219 | 14.00 | 12.500 | 0.750 | 20.00 | 80 | 494.00 |
| 24 × 12 | 24.00 | 21.562 | 1.219 | 12.75 | 11.374 | 0.688 | 20.00 | 80 | 494.00 |
| 24 × 10 | 24.00 | 21.562 | 1.219 | 10.75 | 9.562 | 0.594 | 20.00 | 80 | 494.00 |
Schedule 160
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| ¾ × ½ | 1.05 | 0.612 | 0.219 | 0.84 | 0.464 | 0.188 | 1.50 | 160 | 0.37 |
| 1 × ¾ | 1.32 | 0.820 | 0.250 | 1.05 | 0.612 | 0.219 | 2.00 | 160 | 0.45 |
| 1 × ½ | 1.32 | 0.820 | 0.250 | 0.84 | 0.464 | 0.188 | 2.00 | 160 | 0.45 |
| 1¼ × 1 | 1.66 | 1.160 | 0.250 | 1.32 | 0.820 | 0.250 | 2.00 | 160 | 0.70 |
| 1¼ × ¾ | 1.66 | 1.160 | 0.250 | 1.05 | 0.612 | 0.219 | 2.00 | 160 | 0.70 |
| 1¼ × ½ | 1.66 | 1.160 | 0.250 | 0.84 | 0.464 | 0.188 | 2.00 | 160 | 0.70 |
| 1½ × 1¼ | 1.90 | 1.338 | 0.281 | 1.66 | 1.160 | 0.250 | 2.50 | 160 | 0.90 |
| 1½ × 1 | 1.90 | 1.338 | 0.281 | 1.32 | 0.820 | 0.250 | 2.50 | 160 | 0.90 |
| 1½ × ¾ | 1.90 | 1.338 | 0.281 | 1.05 | 0.612 | 0.219 | 2.50 | 160 | 0.90 |
| 1½ × ½ | 1.90 | 1.338 | 0.281 | 0.84 | 0.464 | 0.188 | 2.50 | 160 | 0.90 |
| 2 × 1½ | 2.38 | 1.692 | 0.344 | 1.90 | 1.338 | 0.281 | 3.00 | 160 | 1.85 |
| 2 × 1¼ | 2.38 | 1.692 | 0.344 | 1.66 | 1.160 | 0.250 | 3.00 | 160 | 1.85 |
| 2 × 1 | 2.38 | 1.692 | 0.344 | 1.32 | 0.820 | 0.250 | 3.00 | 160 | 1.85 |
| 2 × ¾ | 2.38 | 1.692 | 0.344 | 1.05 | 0.612 | 0.219 | 3.00 | 160 | 1.50 |
| 2½ × 2 | 2.88 | 2.130 | 0.375 | 2.38 | 1.692 | 0.344 | 3.50 | 160 | 3.00 |
| 2½ × 1½ | 2.88 | 2.130 | 0.375 | 1.90 | 1.338 | 0.281 | 3.50 | 160 | 3.00 |
| 2½ × 1¼ | 2.88 | 2.130 | 0.375 | 1.66 | 1.160 | 0.250 | 3.50 | 160 | 2.80 |
| 2½ × 1 | 2.88 | 2.130 | 0.375 | 1.32 | 0.820 | 0.250 | 3.50 | 160 | 2.80 |
| 3 × 2½ | 3.50 | 2.624 | 0.438 | 2.88 | 2.130 | 0.375 | 3.50 | 160 | 4.00 |
| 3 × 2 | 3.50 | 2.624 | 0.438 | 2.38 | 1.692 | 0.344 | 3.50 | 160 | 4.00 |
| 3 × 1½ | 3.50 | 2.624 | 0.438 | 1.90 | 1.338 | 0.281 | 3.50 | 160 | 4.00 |
| 3 × 1¼ | 3.50 | 2.624 | 0.438 | 1.66 | 1.160 | 0.250 | 3.50 | 160 | 3.50 |
| 3 × 1 | 3.50 | 2.624 | 0.438 | 1.32 | 0.820 | 0.250 | 3.50 | 160 | 3.50 |
| 4 × 3 | 4.50 | 3.438 | 0.531 | 3.50 | 2.624 | 0.438 | 4.00 | 160 | 6.00 |
| 4 × 2½ | 4.50 | 3.438 | 0.531 | 2.88 | 2.130 | 0.375 | 4.00 | 160 | 6.00 |
| 4 × 2 | 4.50 | 3.438 | 0.531 | 2.38 | 1.692 | 0.344 | 4.00 | 160 | 5.00 |
Schedule 160 (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 4 × 1½ | 4.50 | 3.438 | 0.531 | 1.90 | 1.338 | 0.281 | 4.00 | 160 | 5.00 |
| 4 × 1¼ | 4.50 | 3.438 | 0.531 | 1.66 | 1.160 | 0.250 | 4.00 | 160 | 5.00 |
| 4 × 1 | 4.50 | 3.438 | 0.531 | 1.32 | 0.820 | 0.250 | 4.00 | 160 | 5.00 |
| 5 × 4 | 5.56 | 4.310 | 0.625 | 4.50 | 3.438 | 0.531 | 5.00 | 160 | 14.00 |
| 5 × 3 | 5.56 | 4.310 | 0.625 | 3.50 | 2.624 | 0.438 | 5.00 | 160 | 14.00 |
| 5 × 2½ | 5.56 | 4.310 | 0.625 | 2.88 | 2.130 | 0.375 | 5.00 | 160 | 14.00 |
| 5 × 2 | 5.56 | 4.310 | 0.625 | 2.38 | 1.692 | 0.344 | 5.00 | 160 | 14.00 |
| 6 × 5 | 6.62 | 5.182 | 0.719 | 5.56 | 4.310 | 0.625 | 5.50 | 160 | 18.00 |
| 6 × 4 | 6.62 | 5.182 | 0.719 | 4.50 | 3.438 | 0.531 | 5.50 | 160 | 18.00 |
| 6 × 3 | 6.62 | 5.182 | 0.719 | 3.50 | 2.624 | 0.438 | 5.50 | 160 | 15.50 |
| 6 × 2½ | 6.62 | 5.182 | 0.719 | 2.88 | 2.130 | 0.375 | 5.50 | 160 | 15.50 |
| 6 × 2 | 6.62 | 5.182 | 0.719 | 2.38 | 1.692 | 0.344 | 5.50 | 160 | 15.00 |
| 8 × 6 | 8.62 | 6.808 | 0.906 | 6.62 | 5.182 | 0.719 | 6.00 | 160 | 31.50 |
| 8 × 5 | 8.62 | 6.808 | 0.906 | 5.56 | 4.310 | 0.625 | 6.00 | 160 | 28.00 |
| 8 × 4 | 8.62 | 6.808 | 0.906 | 4.50 | 3.438 | 0.531 | 6.00 | 160 | 28.00 |
| 8 × 3 | 8.62 | 6.808 | 0.906 | 3.50 | 2.624 | 0.438 | 6.00 | 160 | 30.00 |
| 10 × 8 | 10.75 | 8.500 | 1.125 | 8.62 | 6.808 | 0.906 | 7.00 | 160 | 58.00 |
| 10 × 6 | 10.75 | 8.500 | 1.125 | 6.62 | 5.182 | 0.719 | 7.00 | 160 | 58.00 |
| 10 × 5 | 10.75 | 8.500 | 1.125 | 5.56 | 4.310 | 0.625 | 7.00 | 160 | 54.00 |
| 10 × 4 | 10.75 | 8.500 | 1.125 | 4.50 | 3.438 | 0.531 | 7.00 | 160 | 52.00 |
| 12 × 10 | 12.75 | 10.126 | 1.312 | 10.75 | 8.500 | 1.125 | 8.00 | 160 | 95.00 |
| 12 × 8 | 12.75 | 10.126 | 1.312 | 8.62 | 6.808 | 0.906 | 8.00 | 160 | 85.00 |
| 12 × 6 | 12.75 | 10.126 | 1.312 | 6.62 | 5.182 | 0.719 | 8.00 | 160 | 80.00 |
| 12 × 5 | 12.75 | 10.126 | 1.312 | 5.56 | 4.310 | 0.625 | 8.00 | 160 | 80.00 |
| 12 × 4 | 12.75 | 10.126 | 1.312 | 4.50 | 3.438 | 0.531 | 8.00 | 160 | 80.00 |
| 14 × 12 | 14.00 | 11.188 | 1.406 | 12.75 | 10.126 | 1.312 | 13.00 | 160 | 115.00 |
Schedule 160 (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 14 × 10 | 14.00 | 11.188 | 1.406 | 10.75 | 8.500 | 1.125 | 13.00 | 160 | 115.00 |
| 14 × 8 | 14.00 | 11.188 | 1.406 | 8.62 | 6.808 | 0.906 | 13.00 | 160 | 159.00 |
| 14 × 6 | 14.00 | 11.188 | 1.406 | 6.62 | 5.182 | 0.719 | 13.00 | 160 | 159.00 |
| 16 × 14 | 16.00 | 12.812 | 1.594 | 14.00 | 11.188 | 1.406 | 14.00 | 160 | 159.00 |
| 16 × 12 | 16.00 | 12.812 | 1.594 | 12.75 | 10.126 | 1.312 | 14.00 | 160 | 159.00 |
| 16 × 10 | 16.00 | 12.812 | 1.594 | 10.75 | 8.500 | 1.125 | 14.00 | 160 | 159.00 |
| 16 × 8 | 16.00 | 12.812 | 1.594 | 8.62 | 6.808 | 0.906 | 14.00 | 160 | 213.00 |
| 16 × 6 | 16.00 | 12.812 | 1.594 | 6.62 | 5.182 | 0.719 | 14.00 | 160 | 213.00 |
| 18 × 16 | 18.00 | 14.438 | 1.781 | 16.00 | 12.812 | 1.594 | 15.00 | 160 | 213.00 |
| 18 × 14 | 18.00 | 14.438 | 1.781 | 14.00 | 11.188 | 1.406 | 15.00 | 160 | 213.00 |
| 18 × 12 | 18.00 | 14.438 | 1.781 | 12.75 | 10.126 | 1.312 | 15.00 | 160 | 213.00 |
| 18 × 10 | 18.00 | 14.438 | 1.781 | 10.75 | 8.500 | 1.125 | 15.00 | 160 | 348.00 |
| 18 × 8 | 18.00 | 14.438 | 1.781 | 8.62 | 6.808 | 0.906 | 15.00 | 160 | 327.00 |
| 20 × 18 | 20.00 | 16.062 | 1.969 | 18.00 | 14.438 | 1.781 | 20.00 | 160 | 348.00 |
| 20 × 16 | 20.00 | 16.062 | 1.969 | 16.00 | 12.812 | 1.594 | 20.00 | 160 | 348.00 |
| 20 × 14 | 20.00 | 16.062 | 1.969 | 14.00 | 11.188 | 1.406 | 20.00 | 160 | 494.00 |
| 20 × 12 | 20.00 | 16.062 | 1.969 | 12.75 | 10.126 | 1.312 | 20.00 | 160 | 494.00 |
| 20 × 10 | 20.00 | 16.062 | 1.969 | 10.75 | 8.500 | 1.125 | 20.00 | 160 | 494.00 |
| 24 × 20 | 24.00 | 19.312 | 2.344 | 20.00 | 16.062 | 1.969 | 20.00 | 160 | 494.00 |
| 24 × 18 | 24.00 | 19.312 | 2.344 | 18.00 | 14.438 | 1.781 | 20.00 | 160 | 535.00 |
| 24 × 16 | 24.00 | 19.312 | 2.344 | 16.00 | 12.812 | 1.594 | 20.00 | 160 | 535.00 |
| 24 × 14 | 24.00 | 19.312 | 2.344 | 14.00 | 11.188 | 1.406 | 20.00 | 160 | 535.00 |
| 24 × 12 | 24.00 | 19.312 | 2.344 | 12.75 | 10.126 | 1.312 | 20.00 | 160 | 535.00 |
| 24 × 10 | 24.00 | 19.312 | 2.344 | 10.75 | 8.500 | 1.125 | 20.00 | 160 | 535.00 |
Schedule XXS
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| ¾ × ½ | 1.05 | 0.434 | 0.308 | 0.84 | 0.252 | 0.294 | 1.50 | * | 0.39 |
| 1 × ¾ | 1.32 | 0.604 | 0.358 | 1.05 | 0.434 | 0.308 | 2.00 | * | 0.50 |
| 1 × ½ | 1.32 | 0.604 | 0.358 | 0.84 | 0.252 | 0.294 | 2.00 | * | 0.50 |
| 1¼ × 1 | 1.66 | 0.896 | 0.382 | 1.32 | 0.604 | 0.358 | 2.00 | * | 0.75 |
| 1¼ × ¾ | 1.66 | 0.896 | 0.382 | 1.05 | 0.434 | 0.308 | 2.00 | * | 0.75 |
| 1¼ × ½ | 1.66 | 0.896 | 0.382 | 0.84 | 0.252 | 0.294 | 2.00 | * | 0.75 |
| 1½ × 1¼ | 1.90 | 1.100 | 0.400 | 1.66 | 0.896 | 0.382 | 2.50 | * | 1.00 |
| 1½ × 1 | 1.90 | 1.100 | 0.400 | 1.32 | 0.604 | 0.358 | 2.50 | * | 1.00 |
| 1½ × ¾ | 1.90 | 1.100 | 0.400 | 1.05 | 0.434 | 0.308 | 2.50 | * | 1.00 |
| 1½ × ½ | 1.90 | 1.100 | 0.400 | 0.84 | 0.252 | 0.294 | 2.50 | * | 1.00 |
| 2 × 1½ | 2.38 | 1.508 | 0.436 | 1.90 | 1.100 | 0.400 | 3.00 | * | 2.00 |
| 2 × 1¼ | 2.38 | 1.508 | 0.436 | 1.66 | 0.896 | 0.382 | 3.00 | * | 2.00 |
| 2 × 1 | 2.38 | 1.508 | 0.436 | 1.32 | 0.604 | 0.358 | 3.00 | * | 2.00 |
| 2 × ¾ | 2.38 | 1.508 | 0.436 | 1.05 | 0.434 | 0.308 | 3.00 | * | 1.75 |
| 2½ × 2 | 2.88 | 1.776 | 0.552 | 2.38 | 1.508 | 0.436 | 3.50 | * | 4.00 |
| 2½ × 1½ | 2.88 | 1.776 | 0.552 | 1.90 | 1.100 | 0.400 | 3.50 | * | 4.00 |
| 2½ × 1¼ | 2.88 | 1.776 | 0.552 | 1.66 | 0.896 | 0.382 | 3.50 | * | 3.50 |
| 2½ × 1 | 2.88 | 1.776 | 0.552 | 1.32 | 0.604 | 0.358 | 3.50 | * | 3.50 |
| 3 × 2½ | 3.50 | 2.300 | 0.600 | 2.88 | 1.776 | 0.552 | 3.50 | * | 5.00 |
| 3 × 2 | 3.50 | 2.300 | 0.600 | 2.38 | 1.508 | 0.436 | 3.50 | * | 5.00 |
| 3 × 1½ | 3.50 | 2.300 | 0.600 | 1.90 | 1.100 | 0.400 | 3.50 | * | 5.00 |
| 3 × 1¼ | 3.50 | 2.300 | 0.600 | 1.66 | 0.896 | 0.382 | 3.50 | * | 4.50 |
| 3 × 1 | 3.50 | 2.300 | 0.600 | 1.32 | 0.604 | 0.358 | 3.50 | * | 4.50 |
| 4 × 3 | 4.50 | 3.152 | 0.674 | 3.50 | 2.300 | 0.600 | 4.00 | * | 8.00 |
| 4 × 2½ | 4.50 | 3.152 | 0.674 | 2.88 | 1.776 | 0.552 | 4.00 | * | 8.00 |
| 4 × 2 | 4.50 | 3.152 | 0.674 | 2.38 | 1.508 | 0.436 | 4.00 | * | 7.50 |
Schedule XXS (cont.)
| Nom. Size | O.D. | LARGE DIAMETER I.D. | T | O.D. | SMALL DIAMETER I.D. | T | Length L | Pipe Sched. No. | Approx. Wt. Lbs. |
|---|---|---|---|---|---|---|---|---|---|
| 4 × 1½ | 4.50 | 3.152 | 0.674 | 1.90 | 1.100 | 0.400 | 4.00 | * | 7.50 |
| 4 × 1¼ | 4.50 | 3.152 | 0.674 | 1.66 | 0.896 | 0.382 | 4.00 | * | 7.50 |
| 4 × 1 | 4.50 | 3.152 | 0.674 | 1.32 | 0.604 | 0.358 | 4.00 | * | 7.00 |
| 5 × 4 | 5.56 | 4.060 | 0.750 | 4.50 | 3.152 | 0.674 | 5.00 | * | 16.00 |
| 5 × 3 | 5.56 | 4.060 | 0.750 | 3.50 | 2.300 | 0.600 | 5.00 | * | 16.00 |
| 5 × 2½ | 5.56 | 4.060 | 0.750 | 2.88 | 1.776 | 0.552 | 5.00 | * | 16.00 |
| 5 × 2 | 5.56 | 4.060 | 0.750 | 2.38 | 1.508 | 0.436 | 5.00 | * | 16.00 |
| 6 × 5 | 6.62 | 4.892 | 0.864 | 5.56 | 4.060 | 0.750 | 5.50 | * | 23.00 |
| 6 × 4 | 6.62 | 4.892 | 0.864 | 4.50 | 3.152 | 0.674 | 5.50 | * | 23.00 |
| 6 × 3 | 6.62 | 4.892 | 0.864 | 3.50 | 2.300 | 0.600 | 5.50 | * | 20.00 |
| 6 × 2½ | 6.62 | 4.892 | 0.864 | 2.88 | 1.776 | 0.552 | 5.50 | * | 20.00 |
| 6 × 2 | 6.62 | 4.892 | 0.864 | 2.38 | 1.508 | 0.436 | 5.50 | * | 19.00 |
| 8 × 6 | 8.62 | 6.870 | 0.875 | 6.62 | 4.892 | 0.864 | 6.00 | * | 36.00 |
| 8 × 5 | 8.62 | 6.870 | 0.875 | 5.56 | 4.060 | 0.750 | 6.00 | * | 33.00 |
| 8 × 4 | 8.62 | 6.870 | 0.875 | 4.50 | 3.152 | 0.674 | 6.00 | * | 33.00 |
| 8 × 3 | 8.62 | 6.870 | 0.875 | 3.50 | 2.300 | 0.600 | 6.00 | * | 33.00 |
| 10 × 8 | 10.75 | 8.750 | 1.000 | 8.62 | 6.870 | 0.875 | 7.00 | * | 48.00 |
| 10 × 6 | 10.75 | 8.750 | 1.000 | 6.62 | 4.892 | 0.864 | 7.00 | * | 58.00 |
| 10 × 5 | 10.75 | 8.750 | 1.000 | 5.56 | 4.060 | 0.750 | 7.00 | * | 54.00 |
| 10 × 4 | 10.75 | 8.750 | 1.000 | 4.50 | 3.152 | 0.674 | 7.00 | * | 52.00 |
| 12 × 10 | 12.75 | 10.750 | 1.000 | 10.75 | 8.750 | 1.000 | 8.00 | * | 95.00 |
| 12 × 8 | 12.75 | 10.750 | 1.000 | 8.62 | 6.870 | 0.875 | 8.00 | * | 85.00 |
| 12 × 6 | 12.75 | 10.750 | 1.000 | 6.62 | 4.892 | 0.864 | 8.00 | * | 80.00 |
| 12 × 5 | 12.75 | 10.750 | 1.000 | 5.56 | 4.060 | 0.750 | 8.00 | * | 80.00 |
| 12 × 4 | 12.75 | 10.750 | 1.000 | 4.50 | 3.152 | 0.674 | 8.00 | * | 80.00 |
Materials We Supply
Concentric & Eccentric Reducers to ASME B16.9 in the grades below. Tell us the service and we will confirm the right one.
| Material | Specification | Typical Service |
|---|---|---|
| Carbon Steel | ASTM A234 WPB / WPC | General process, steam, oil and gas gathering and utility lines |
| Low-Temp Carbon Steel | ASTM A420 WPL6 | Cold service to −50°F; LNG and northern pipeline work |
| Chrome-Moly Alloy | ASTM A234 WP11 / WP22 / WP91 | Elevated temperature; refinery heaters, power plant steam |
| Stainless Steel | ASTM A403 WP304/304L, WP316/316L | Corrosive service, chemical, food and beverage, water treatment |
| Duplex & Super Duplex | ASTM A815 UNS S31803 / S32750 | Chloride and seawater service, offshore, desalination |
Common Questions
What is the difference between a concentric and an eccentric reducer?
A concentric reducer keeps both ends on the same centerline, so the size change is symmetrical. An eccentric reducer offsets the centerlines so one side of the fitting stays flat and in line with the pipe. On horizontal runs that flat side is what stops vapour or liquid being trapped at the size change.
Why is an eccentric reducer used on pump suction?
Installed flat side up, it keeps the top of the suction line level through the size change so air cannot collect in a high pocket ahead of the pump. Trapped vapour entering a pump causes cavitation, loss of head, and impeller damage.
Which way up does an eccentric reducer go?
Flat side up on pump suction, to prevent vapour pockets. Flat side down where the priority is draining the line or keeping settling solids moving. The service dictates it, and the fitting must be installed accordingly.
How are reducers sized?
Large end × small end. A 6 × 4 reducer takes 6" pipe down to 4". The tables above give outside diameter, inside diameter, and wall thickness for both ends, plus the overall length L.
