“Sch 80 pipe” refers to a pipe that follows the Schedule 80 standard, which specifies a thicker wall thickness than lower schedule pipes, such as Schedule 40. The thicker wall of a Schedule 80 pipe allows it to withstand higher internal pressures, making it suitable for more demanding applications.
Schedule 80 Pipe Dimensions Chart
ANSI Schedule 80 Steel Pipes-Dimensions
Based on ASTM A53, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded, and Seamless.
| Pipe Size (in) | Diameter (in) (mm) | Nominal Thickness | Transverse Areas (in²) mm² | Length of Pipe (ft persq.foot of surface) | Volume (ft³/ft) | Weight | Number of Threads per inch of Screw | |||||
| External | Internal | (in) (mm) | External | Internal | Steel | External Surface (ft) | Internal Surface (ft) | (Ib/ft) | (kg/m) | |||
| 1/8 | 0.41 10.4 | 0.22 5.59 | 0.10 2.54 | 0.13 83.9 | 0.04 25.8 | 0.09 58.1 | 9.43 | 17.75 | 0.0003 | 0.31 | 0.47 | 27 |
| 1/4 | 0.54 13.7 | 0.30 7.62 | 0.12 3.05 | 0.23 148 | 0.07 45.2 | 0.16 103 | 7.07 | 12.65 | 0.0005 | 0.54 | 0.80 | 18 |
| 3/8 | 0.68 17.3 | 0.42 10.7 | 0.13 3.3 | 0.36 232 | 0.14 90.3 | 0.22 142 | 5.66 | 9.03 | 0.0010 | 0.74 | 1.10 | 18 |
| 1/2 | 0.84 21.3 | 0.55 14 | 0.15 3.81 | 0.55 355 | 0.23 148 | 0.32 206 | 4.55 | 7.00 | 0.0016 | 1.00 | 1.49 | 14 |
| 3/4 | 1.05 26.7 | 0.74 18.8 | 0.15 3.81 | 0.87 561 | 0.43 277 | 0.43 277 | 3.64 | 5.15 | 0.0030 | 1.47 | 2.19 | 14 |
| 1 | 1.32 33.5 | 0.96 24.4 | 0.18 4.57 | 1.36 877 | 0.72 465 | 0.64 413 | 2.90 | 4.00 | 0.0050 | 2.17 | 3.23 | 11 1/2 |
| 1 1/4 | 1.66 42.2 | 1.28 32.5 | 0.19 4.83 | 2.16 1394 | 1.28 826 | 0.88 568 | 2.30 | 2.99 | 0.0089 | 3.00 | 4.46 | 11 1/2 |
| 1 1/2 | 1.90 48.3 | 1.50 38.1 | 0.20 5.08 | 2.84 1832 | 1.77 1142 | 1.07 690 | 2.01 | 2.54 | 0.0123 | 3.65 | 5.43 | 11 1/2 |
| 2 | 2.38 60.5 | 1.94 49.3 | 0.22 5.59 | 4.43 2858 | 2.95 1903 | 1.48 955 | 1.61 | 1.97 | 0.0205 | 5.02 | 7.47 | 11 1/2 |
| 2 1/2 | 2.88 73.2 | 2.32 58.9 | 0.28 7.11 | 6.49 4187 | 4.24 2735 | 2.25 1452 | 1.33 | 1.65 | 0.0294 | 7.66 | 11.40 | 8 |
| 3 | 3.50 88.9 | 2.90 73.7 | 0.30 7.62 | 9.62 6206 | 6.61 4265 | 3.02 1948 | 1.09 | 1.32 | 0.0459 | 10.30 | 15.33 | 8 |
| 3 1/2 | 4.00 102 | 3.36 85.3 | 0.32 8.13 | 12.56 8103 | 8.89 5735 | 3.68 2374 | 0.95 | 1.14 | 0.0617 | 12.50 | 18.60 | 8 |
| 4 | 4.50 114 | 3.83 97.3 | 0.34 8.64 | 15.90 10258 | 11.50 7419 | 4.41 2845 | 0.85 | 1.00 | 0.0800 | 14.90 | 22.17 | 8 |
| 5 | 5.56 141 | 4.81 122 | 0.38 9.65 | 24.30 15677 | 18.19 11735 | 6.11 3942 | 0.69 | 0.79 | 0.1263 | 20.80 | 30.95 | 8 |
| 6 | 6.63 168 | 5.76 146 | 0.43 10.9 | 34.47 22239 | 26.07 16819 | 8.30 5355 | 0.58 | 0.67 | 0.1810 | 28.60 | 42.56 | 8 |
| 8 | 8.63 219 | 7.63 194 | 0.50 12.7 | 58.42 37690 | 45.66 29458 | 12.76 8232 | 0.44 | 0.50 | 0.3171 | 43.40 | 64.59 | 8 |
| 10 | 10.75 273 | 9.56 243 | 0.59 15 | 90.76 58555 | 71.84 46348 | 18.92 12206 | 0.36 | 0.40 | 0.4989 | 64.40 | 95.84 | 8 |
| 12 | 12.75 324 | 11.38 289 | 0.69 17.5 | 127.64 82348 | 101.64 65574 | 26.00 16774 | 0.30 | 0.34 | 0.7058 | 88.60 | 131.85 | |
| 14 | 14.00 356 | 12.50 318 | 0.75 19 | 153.94 99316 | 122.72 79174 | 31.22 20142 | 0.27 | 0.31 | 0.8522 | 107.00 | 159.23 | |
| 16 | 16.00 406 | 14.31 363 | 0.84 21.3 | 201.05 129709 | 160.92 103819 | 40.13 25890 | 0.24 | 0.26 | 1.1170 | 137.00 | 203.88 | |
| 18 | 18.00 457 | 16.13 410 | 0.94 23.9 | 254.85 164419 | 204.24 131767 | 50.61 32652 | 0.21 | 0.24 | 1.4180 | 171.00 | 254.48 | |
| 20 | 20.00 508 | 17.94 456 | 1.03 26.2 | 314.15 202677 | 252.72 163045 | 61.43 39632 | 0.19 | 0.21 | 1.7550 | 209.00 | 311.03 | |
| 24 | 24.00 610 | 21.56 548 | 1.22 31 | 452.40 291870 | 365.22 235625 | 87.18 56245 | 0.16 | 0.17 | 2.5360 | 297.00 | 441.99 | |
1 in² = 645.2 mm² = 6.452 cm² = 6.452×10-4 m²
1 in = 25.4 mm
1 ft (foot) = 0.3048 m
Key Features of Sch 80 Pipe:
Thicker Wall: Compared to Schedule 40, Sch 80 pipes have a thicker wall, which improves strength and pressure tolerance.
Pressure Resistance: Sch 80 pipes are designed to handle higher pressure environments.
Common Materials: These pipes are typically made of materials like PVC, steel, stainless steel, and other alloys.
Applications: Used in high-pressure systems like chemical processing, water treatment, oil and gas pipelines, and other industrial applications.
In short, a Sch 80 pipe is a pipe with a thicker wall designed for higher pressure capacity and more demanding industrial uses. If you need specific dimensions or material options for Schedule 80 pipes, feel free to ask!
