Gem Bids For Spacer (rigiflex) Coupling As Per Drg No. 3-55- 810- 02260 Rev. 01 To Transmit 1000 Kw @ 1490 Rpm. , Spacer (rigiflex) Coupling As Per Drg No. 3-55- 810- 01144 To Transmit 825 Kw @ 1480 Rpm