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The diagram illustrates how common PVC casing well sizes fit into the ID of Geoprobe® sonic bits.
PVC Casing Sizing
| PVC | Type | OD | ID (avg) |
|---|---|---|---|
| 2 in. | SCH40 | 2.38 in. | 2.05 in. |
| 2 in | SCH80 | 2.38 in. | 1.91 in. |
| 4 in. | SCH40 | 4.50 in. | 4.00 in. |
| 4 in. | SCH80 | 4.50 in. | 3.79 in. |
| 6 in. | SCH40 | 6.63 in. | 6.03 in. |
| 6 in. | SCH80 | 6.63 in. | 5.71 in. |
| 8 in. | SCH40 | 8.63 in. | 7.94 in. |
| 8 in. | SCH80 | 8.63 in. | 7.57 in. |
