Concentric and Eccentric Reducer Dimensions
A reducer changes up your pipe size right in a single butt-welded fitting. Dem concentric reducers keep both ends lined up on a common centerline; now, eccentric reducers share a flat side instead, which keeps either the top or the bottom of the line runnin' straight as an arrow right through dat size change.
Concentric or eccentric ain't 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. Dat's why pump suction lines use an eccentric reducer flat side up. It keeps the top of the pipe level so air can't pocket ahead of the pump and cause cavitation. On vertical lines the distinction stops matterin' and concentric is normal.
Flat side up or flat side down.
Flat side up on pump suction, to stop them vapour pockets. Flat side down where y'all want the line to drain completely and keep solids movin'. Gettin' this backwards is one of the most common and most expensive piping mistakes in rotating equipment work, I tell you what.
How To Read Dese Dimensions
ASME B16.9 covers concentric and eccentric reducers, and gives 'em both the same overall length L at a given size pairin'. The standard sets the dimensions; it don't tell y'all which of the two the service needs, and that's the part worth gettin' right, I tell you what.
- O.D.
- Outside diameterOutside diameter at the weldin' end, matchin' up perfect with the pipe it welds to.
- I.D.
- Inside diameterBore right through the fitting, set by dat wall thickness.
- T
- Wall thicknessNominal wall at the weldin' end, matched to the pipe schedule.
- L
- Overall lengthFace to face, end to end. Concentric and eccentric reducers share the same L at a given size pairing.
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'll confirm the right one for y'all.
| 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 |
Questions Folks Ask Us
What's the difference 'tween a concentric and an eccentric reducer?
A concentric reducer keeps both ends right on the same centerline, so the size change is nice and symmetrical. An eccentric reducer offsets dem centerlines so one side of the fittin' stays flat and in line with the pipe. On horizontal runs, dat flat side is what keeps vapour or liquid from gettin' trapped at the size change, I reckon.
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 can't collect in a high pocket ahead of the pump. Trapped vapour enterin' a pump causes cavitation, loss of head, and impeller damage, and you don't want none of dat.
Which way up does an eccentric reducer go?
Flat side up on pump suction, to stop them vapour pockets. Flat side down where the priority is drainin' the line or keepin' settling solids movin'. The service dictates it, and the fitting must be installed accordingly, yessir.
How are reducers sized?
Large end × small end. A 6 × 4 reducer takes a 6" pipe down to 4". Them tables above give y'all the outside diameter, inside diameter, and wall thickness for both ends, plus dat overall length L.
