Yes. Most round specimen preparation systems include flexible clamping options that allow working with different stock shapes — round, square, or even pipe sections. The jaws or chuck adapters can be adjusted to hold thin-wall tubing or solid bars securely during machining. This setup helps prepare standard tensile bars, threaded samples, or reduced-gauge specimens directly from production materials without extra cutting or reshaping. It simplifies the workflow and keeps dimensional accuracy consistent for each test batch.