Line Pipe Wall Thickness Chart
Line Pipe Wall Thickness Chart
Below is an organized line pipe wall thickness chart based on Nominal Wall Thickness and Welded Steel Line Pipe. All NPS, O.D., I.D. and Schedule are listed in inches. We carry multiple schedules of line pipe to include, STD, Schedule 40, Schedule 80, and most intermediate line pipe wall thicknesses. We also offer CW, ERW, SMLS and DSAW line pipe.
Line pipe wall thickness specifications are fundamental to safe and efficient oil and gas pipeline design, ensuring proper pressure ratings, flow capacity, and structural integrity for crude oil transmission, natural gas gathering systems, and produced water pipelines. This comprehensive line pipe wall thickness chart provides critical dimensions for welded steel line pipe across all standard nominal pipe sizes (NPS), including outside diameter (O.D.), inside diameter (I.D.), and schedule classifications from STD through Schedule 80. Understanding the relationship between pipe schedule, wall thickness, and pressure capacity is essential for pipeline engineers designing new gathering systems, operators planning pipeline expansions, and procurement teams sourcing line pipe that meets API 5L specifications and DOT pipeline safety regulations. Whether you’re specifying pipe for high-pressure injection wells, low-pressure flowlines, or intermediate gathering systems, accurate wall thickness data ensures compliance with design codes while optimizing material costs and installation efficiency.
Flowtech Energy stocks a complete range of line pipe manufacturing types to match your project specifications and budget requirements, including continuous weld (CW) pipe for cost-effective low-pressure applications, electric resistance welded (ERW) pipe for standard oilfield gathering systems, seamless (SMLS) pipe for high-pressure and sour gas service, and double submerged arc welded (DSAW) pipe for large-diameter transmission pipelines. Each manufacturing process offers distinct advantages in terms of pressure rating, corrosion resistance, and weldability—factors that directly impact long-term pipeline performance and maintenance costs. The chart below organizes wall thickness data by nominal pipe size and schedule, allowing you to quickly identify the correct specifications for material requisitions, verify dimensions on existing pipeline infrastructure, or evaluate used line pipe inventory for redeployment to new well sites or pipeline projects.
Line Pipe Wall Thickness Chart API/ASTM Specifications
| wdt_ID | NPS | SCH | OD (in) | ID (in) | Wall Thkns (in) | Wgt (lb/ft) |
|---|---|---|---|---|---|---|
| 1 | 1/2 | 5 | 0.840 | 0.710 | 0.065 | 0.54 |
| 2 | 1/2 | 10 | 0.840 | 0.674 | 0.083 | 0.67 |
| 3 | 1/2 | 40 | 0.840 | 0.622 | 0.109 | 0.85 |
| 4 | 1/2 | STD | 0.840 | 0.622 | 0.109 | 0.85 |
| 5 | 1/2 | XS | 0.840 | 0.546 | 0.147 | 1.09 |
| 6 | 1/2 | 80 | 0.840 | 0.546 | 0.147 | 1.09 |
| 7 | 1/2 | 160 | 0.840 | 0.466 | 0.187 | 1.30 |
| 8 | 1/2 | XXS | 0.840 | 0.252 | 0.294 | 1.71 |
| 9 | 3/4 | 5 | 1.050 | 0.920 | 0.065 | 0.68 |
| 10 | 3/4 | 10 | 1.050 | 0.884 | 0.083 | 0.86 |
| 11 | 3/4 | 40 | 1.050 | 0.824 | 0.113 | 1.13 |
| 12 | 3/4 | STD | 1.050 | 0.824 | 0.113 | 1.13 |
| 13 | 3/4 | XS | 1.050 | 0.742 | 0.154 | 1.47 |
| 14 | 3/4 | 80 | 1.050 | 0.742 | 0.154 | 1.47 |
| 15 | 3/4 | 160 | 1.050 | 0.614 | 0.218 | 1.94 |
| 16 | 3/4 | XXS | 1.050 | 0.434 | 0.308 | 2.44 |
| 17 | 1 | 5 | 1.315 | 1.185 | 0.065 | 0.87 |
| 18 | 1 | 10 | 1.315 | 1.097 | 0.109 | 1.40 |
| 19 | 1 | 40 | 1.315 | 1.049 | 0.133 | 1.68 |
| 20 | 1 | STD | 1.315 | 1.049 | 0.133 | 1.68 |
| 21 | 1 | XS | 1.315 | 0.957 | 0.179 | 2.17 |
| 22 | 1 | 80 | 1.315 | 0.957 | 0.179 | 2.17 |
| 23 | 1 | 160 | 1.315 | 0.815 | 0.250 | 2.84 |
| 24 | 1 | XXS | 1.315 | 0.599 | 0.358 | 3.66 |
| 25 | 1 1/4 | 5 | 1.660 | 1.530 | 0.065 | 1.11 |
| 26 | 1 1/4 | 10 | 1.660 | 1.442 | 0.109 | 1.81 |
| 27 | 1 1/4 | 40 | 1.660 | 1.380 | 0.140 | 2.27 |
| 28 | 1 1/4 | STD | 1.660 | 1.380 | 0.140 | 2.27 |
| 29 | 1 1/4 | XS | 1.660 | 1.278 | 0.191 | 3.00 |
| 30 | 1 1/4 | 80 | 1.660 | 1.278 | 0.191 | 3.00 |
| 31 | 1 1/4 | 160 | 1.660 | 1.160 | 0.250 | 3.77 |
| 32 | 1 1/4 | XXS | 1.660 | 0.896 | 0.382 | 5.21 |
| 33 | 1 1/2 | 5 | 1.900 | 1.770 | 0.065 | 1.27 |
| 34 | 1 1/2 | 10 | 1.900 | 1.682 | 0.109 | 2.09 |
| 35 | 1 1/2 | 40 | 1.900 | 1.610 | 0.145 | 2.72 |
| 36 | 1 1/2 | STD | 1.900 | 1.610 | 0.145 | 2.72 |
| 37 | 1 1/2 | XS | 1.900 | 1.500 | 0.200 | 3.63 |
| 38 | 1 1/2 | 80 | 1.900 | 1.500 | 0.200 | 3.63 |
| 39 | 1 1/2 | 160 | 1.900 | 1.338 | 0.281 | 4.86 |
| 40 | 1 1/2 | XXS | 1.900 | 1.100 | 0.400 | 6.41 |
| 41 | 2 | 5 | 2.375 | 2.245 | 0.065 | 1.60 |
| 42 | 2 | 10 | 2.375 | 2.157 | 0.109 | 2.64 |
| 43 | 2 | STD | 2.375 | 2.067 | 0.154 | 3.65 |
| 44 | 2 | 40 | 2.375 | 2.067 | 0.154 | 3.65 |
| 45 | 2 | XS | 2.375 | 1.939 | 0.218 | 5.02 |
| 46 | 2 | 80 | 2.375 | 1.939 | 0.218 | 5.02 |
| 47 | 2 | 160 | 2.375 | 1.687 | 0.344 | 7.46 |
| 48 | 2 | XXS | 2.375 | 1.503 | 0.436 | 9.03 |
| 49 | 2 1/2 | 5 | 2.875 | 2.709 | 0.083 | 2.48 |
| 50 | 2 1/2 | 10 | 2.875 | 2.635 | 0.120 | 3.53 |
| 51 | 2 1/2 | STD | 2.875 | 2.469 | 0.203 | 5.79 |
| 52 | 2 1/2 | 40 | 2.875 | 2.469 | 0.203 | 5.79 |
| 53 | 2 1/2 | XS | 2.875 | 2.323 | 0.276 | 7.66 |
| 54 | 2 1/2 | 80 | 2.875 | 2.323 | 0.276 | 7.66 |
| 55 | 2 1/2 | 160 | 2.875 | 2.125 | 0.375 | 10.01 |
| 56 | 2 1/2 | XXS | 2.875 | 1.771 | 0.552 | 13.70 |
| 57 | 3 | 5 | 3.500 | 3.334 | 0.083 | 3.03 |
| 58 | 3 | 10 | 3.500 | 3.260 | 0.120 | 4.33 |
| 59 | 3 | STD | 3.500 | 3.068 | 0.216 | 7.58 |
| 60 | 3 | 40 | 3.500 | 3.068 | 0.216 | 7.58 |
| 61 | 3 | XS | 3.500 | 2.900 | 0.300 | 10.25 |
| 62 | 3 | 80 | 3.500 | 2.900 | 0.300 | 10.25 |
| 63 | 3 | 160 | 3.500 | 2.625 | 0.438 | 14.32 |
| 64 | 3 | XXS | 3.500 | 2.300 | 0.600 | 18.58 |
| 65 | 3 1/2 | 5 | 4.000 | 3.834 | 0.083 | 3.47 |
| 66 | 3 1/2 | 10 | 4.000 | 3.760 | 0.120 | 4.97 |
| 67 | 3 1/2 | STD | 4.000 | 3.548 | 0.226 | 9.11 |
| 68 | 3 1/2 | 40 | 4.000 | 3.548 | 0.226 | 9.11 |
| 69 | 3 1/2 | XS | 4.000 | 3.364 | 0.318 | 12.51 |
| 70 | 3 1/2 | 80 | 4.000 | 3.364 | 0.318 | 12.51 |
| 71 | 3 1/2 | XXS | 4.000 | 2.728 | 0.636 | 22.85 |
| 72 | 4 | 5 | 4.500 | 4.334 | 0.083 | 3.92 |
| 73 | 4 | 10 | 4.500 | 4.260 | 0.120 | 5.61 |
| 74 | 4 | STD | 4.500 | 4.026 | 0.237 | 10.79 |
| 75 | 4 | 40 | 4.500 | 4.026 | 0.237 | 10.79 |
| 76 | 4 | XS | 4.500 | 3.826 | 0.337 | 14.98 |
| 77 | 4 | 80 | 4.500 | 3.826 | 0.337 | 14.98 |
| 78 | 4 | 120 | 4.500 | 3.625 | 0.438 | 19.00 |
| 79 | 4 | 160 | 4.500 | 3.438 | 0.531 | 22.51 |
| 80 | 4 | XXS | 4.500 | 3.152 | 0.674 | 27.54 |
| 81 | 4 1/2 | STD | 5.000 | 4.506 | 0.247 | 12.54 |
| 82 | 4 1/2 | XS | 5.000 | 4.290 | 0.355 | 17.61 |
| 83 | 5 | 5 | 5.563 | 5.345 | 0.109 | 6.35 |
| 84 | 5 | 10 | 5.563 | 5.295 | 0.134 | 7.77 |
| 85 | 5 | STD | 5.563 | 5.047 | 0.258 | 14.62 |
| 86 | 5 | 40 | 5.563 | 5.047 | 0.258 | 14.62 |
| 87 | 5 | XS | 5.563 | 4.813 | 0.375 | 20.78 |
| 88 | 5 | 80 | 5.563 | 4.813 | 0.375 | 20.78 |
| 89 | 5 | 120 | 5.563 | 4.563 | 0.500 | 27.04 |
| 90 | 5 | 160 | 5.563 | 4.313 | 0.625 | 32.96 |
| 91 | 5 | XXS | 5.563 | 4.063 | 0.750 | 38.55 |
| 92 | 6 | 5 | 6.625 | 6.407 | 0.109 | 7.59 |
| 93 | 6 | 10 | 6.625 | 6.357 | 0.134 | 9.29 |
| 94 | 6 | STD | 6.625 | 6.065 | 0.280 | 18.97 |
| 95 | 6 | 40 | 6.625 | 6.065 | 0.280 | 18.97 |
| 96 | 6 | XS | 6.625 | 5.761 | 0.432 | 28.57 |
| 97 | 6 | 80 | 6.625 | 5.761 | 0.432 | 28.57 |
| 98 | 6 | 120 | 6.625 | 5.500 | 0.562 | 36.39 |
| 99 | 6 | 160 | 6.625 | 5.187 | 0.719 | 45.35 |
| 100 | 6 | XXS | 6.625 | 4.897 | 0.864 | 53.16 |
Line Pipe Wall Thickness Chart Abbreviations:
- NPS = Nominal Pipe Size
- Sched = ANSI/ASME B36.10m schedule number or API designation STD WT/XS/XXS
- O.D = Outside diameter
- I.D = Inside diameter Wall = Wall thickness Lbs./ft. = Lbs./ft.
- Wall Thickness = Nominal Wall Thickness of pipe
- STD = Standard weight
- XS = Extra strong (same as ‘XH’)
- XXS = Double extra strong (same as ‘XXH’)
- XXXS = Triple extra strong (same as ‘XXXH’)
Follow this link if you are looking for the Line Pipe Dimensions & Weight Chart.
