Map the space around the base
Begin with the desk footprint and the routes people use to enter and leave their seats. Measure the available space rather than judging fit from the seat alone. Check the base's outer dimensions, its relationship to nearby furniture and the clearance around footrests or other equipment used at the workstation.
Metal base office chairs without headrests need this spatial assessment just as much as a support assessment. Base material does not reveal the shape or size beneath the seat. If several workstations sit close together, repeat the check with adjacent seating occupied and with storage units in their usual positions.
Separate metal composition from documented capability
Ask which metal and surface treatment are specified where those details affect workplace requirements. Keep the answer distinct from any evidence about permitted loading, testing or intended use. A material description alone cannot establish those characteristics, and an apparently substantial base should not replace a review of the relevant documentation.
Examine the complete base arrangement, including its connection to the rest of the chair and any floor contact components. Confirm whether movement across the floor is intended and which components are appropriate for that surface. Avoid treating the word metal as evidence of a particular weight, maintenance routine or service life.

