# PVC Schedule 40 and Schedule 80 pipe: OD, minimum wall and ID, 1/2 to 4 in

> What are the OD, wall thickness and ID of Schedule 40 and Schedule 80 PVC pipe?

- Category: Tri-clamp & pipe › Pipe, tube & threads
- Kind: Standard part
- Basis: Westlake Pipe Sch 40 / Sch 80 table, JM Eagle spec sheet and McMaster-Carr Sch 80 pipe page agree; numbers only (Sch 40 pipe CAD on 'schedule-40-pipe')
- Page: https://xemstudio.com/objects/pvc-schedule-40-80-pipe-od-and-wall/ · JSON: https://xemstudio.com/api/geometry?object=pvc-schedule-40-80-pipe-od-and-wall · Plain text: https://xemstudio.com/objects/pvc-schedule-40-80-pipe-od-and-wall/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no tolerance added.

## Notes

- Schedule 40 and Schedule 80 PVC share the outside diameter (the steel NPS OD); only the wall differs, so both fit the same sockets and fittings. Sch 80 is thicker inward: 1/2 in has a 0.109 in wall in Sch 40 and 0.147 in in Sch 80.
- Sources: OD, minimum wall and ID from Westlake Pipe's Sch 40 / Sch 80 table; OD and minimum wall repeated by JM Eagle's spec sheet (Rev 12) for all nine sizes (equal); Sch 80 minimum wall and ID repeated by McMaster-Carr's Schedule 80 pipe page. In every row Westlake's ID equals OD minus twice the minimum wall (to 0.0015 in). The Sch 40 sizes 1/2 to 2 in match the existing 'schedule-40-pipe' page (OD 21.34 to 60.33 mm, walls 2.77 to 3.91 mm).
- Minimum wall, not nominal: real pipe is thicker and OD has a tolerance. The ID is a calculated value, not a control dimension.
- STEP/STL for Sch 40 pipe stubs (1/2 to 2 in) are on 'schedule-40-pipe'; no pipe files are repeated here. Left out: Sch 40 / 80 OD tolerances and sizes under 1/2 in and over 4 in (in the same tables, not asked), Schedule 120, and pressure ratings (differ by maker and temperature).

## Sizes

| nominal pipe size, in | OD, in (mm) | Sch 40 min wall, in (mm) | Sch 40 ID, in (mm) | Sch 80 min wall, in (mm) | Sch 80 ID, in (mm) |
|---|---|---|---|---|---|
| 1/2 | 0.840 (21.34) | 0.109 (2.77) | 0.622 (15.80) | 0.147 (3.73) | 0.546 (13.87) |
| 3/4 | 1.050 (26.67) | 0.113 (2.87) | 0.824 (20.93) | 0.154 (3.91) | 0.742 (18.85) |
| 1 | 1.315 (33.40) | 0.133 (3.38) | 1.049 (26.64) | 0.179 (4.55) | 0.957 (24.31) |
| 1-1/4 | 1.660 (42.16) | 0.140 (3.56) | 1.380 (35.05) | 0.191 (4.85) | 1.278 (32.46) |
| 1-1/2 | 1.900 (48.26) | 0.145 (3.68) | 1.610 (40.89) | 0.200 (5.08) | 1.500 (38.10) |
| 2 | 2.375 (60.32) | 0.154 (3.91) | 2.067 (52.50) | 0.218 (5.54) | 1.939 (49.25) |
| 2-1/2 | 2.875 (73.02) | 0.203 (5.16) | 2.469 (62.71) | 0.276 (7.01) | 2.323 (59.00) |
| 3 | 3.500 (88.90) | 0.216 (5.49) | 3.068 (77.93) | 0.300 (7.62) | 2.900 (73.66) |
| 4 | 4.500 (114.30) | 0.237 (6.02) | 4.026 (102.26) | 0.337 (8.56) | 3.826 (97.18) |

## Where the files are

- Westlake Pipe: [Sch 40 / Sch 80 pressure pipe: OD, minimum wall, ID, 1/2 to 18 in](https://www.westlakepipe.com/sites/default/files/PL-PS-025-CA-EN-0522.1_Sch40-Sch80-Pressure-Pipe.pdf) — web — Publisher's page; dimensions are facts
- JM Eagle: [Pressure-rated PVC pipe spec sheet (Rev 12): Sch 40 and Sch 80 average OD and minimum wall](https://assets.unilogcorp.com/187/ITEM/DOC/JM_Eagle_102368863_Specification_Sheet.pdf) — web — Publisher's page; dimensions are facts
- McMaster-Carr: [PVC (Schedule 80) pipe, unthreaded (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/pvc-(schedule-80)-dark-gray-unthreaded-pipe) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)
- McMaster-Carr: [PVC (Schedule 80) pipe fittings (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/pvc-(schedule-80)-dark-gray-unthreaded-pipe-fittings) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)
- McMaster-Carr: [PVC (Schedule 40) fittings and pipe, UV-resistant (socket-connect elbows, tees, couplings) (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/uv-resistant-pvc-(schedule-40)-pipe-fittings-and-pipe/) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Questions

**What is the OD of 1 in Schedule 80 PVC pipe?**

1.315 in (33.40 mm), the same as Schedule 40; Sch 80 has a 0.179 in (4.55 mm) minimum wall and a 0.957 in (24.31 mm) ID.

**What is the difference between Sch 40 and Sch 80 PVC?**

Wall thickness only: the OD is identical, so the same socket fittings fit. 1/2 in is 0.109 in thick in Sch 40 and 0.147 in in Sch 80.

**What is the ID of 2 in Schedule 40 PVC?**

2.067 in (52.50 mm) with a 0.154 in minimum wall; Schedule 80 is 1.939 in (49.25 mm).

## Fits with

- [Schedule 40 pipe and PVC fittings, 1/2 to 2 inch](https://xemstudio.com/objects/schedule-40-pipe/)
- [PVC Schedule 40 socket dimensions (ASTM D2466): entrance Ø, bottom Ø, socket length, 1/2 to 4 in](https://xemstudio.com/objects/pvc-socket-dimensions-astm-d2466/)
- [PVC Schedule 40 fittings: 90° and 45° elbow, tee, coupling and cap laying lengths (Charlotte vs Spears), 1/2 to 4 in](https://xemstudio.com/objects/pvc-schedule-40-fittings-laying-lengths/)
- [Copper pipe (ASTM B88 Type L and M), 1/4 to 2 inch](https://xemstudio.com/objects/copper-pipe-type-l-m/)
- [NPT male thread envelopes 1/8 to 1 in (ASME B1.20.1)](https://xemstudio.com/objects/npt-thread-envelopes/)