Centrifugeal gas blower

Unanswerable question.

Tell us what you want to do and we could well advise on manufacturers.

Centrifugal compressors (do you mean compressor or do you really want a blower - typically mm wg?) have economical capacities ranging very roughly from around 10³ to close to 10⁶ m³/hr inlet volume with pressures ranging from 2 to 800 bar.