Most PDU manufactures max rating is 32amps.
Those miners are 1600w each.
9*1600 - 14.4kw per rack.
At 230volts thats 62.6amps per rack.
So 2x 32amp PDUs required....
Since that appears to be 3 phase power, each phase would have a draw of 3*1600=4800W/phase.
At 230 volts, that is 20.1 Amps per phase.
So something like
this 32 Amp PDU should work. (Don't know about price; probably not cheap.)