bids are invited for custom bid for services - periodical inspection servicing of dcp type fire extinguisher once every 03 months ie quarterly unit of capacity upto 04 05 06 kg with gas , custom bid for services - periodical inspection servicing of abc type fire extinguisher once every 03 months ie quarterly unit of capacity upto 04 05 06 kg with gas cartridge , custom bid for services - hydraulic pressure testing of fire extinguisher of dcp type once in 02 years unit of capacity upto 04 05 06 kg , custom bid for services - hydraulic pressure testing of fire extinguisher of abc type once in 02 years unit of capacity upto 04 05 06 kg , custom bid for services - painting of dcp type fire extinguisher once in contract period unit of capacity upto 04 05 06 kg , custom bid for services - painting of abc type fire extinguisher once in contract period unit of capacity upto 04 05 06 kg , custom bid for services - refilling of dcp type fire extinguisher with cartridge and dry chemical powder once per year unit of capacity upto 04 05 06 kg , custom bid for services - refilling of abc type fire extinguisher with nitrogen once per year unit of capacity upto 04 05 06 kg , custom bid for services - refilling of abc type fire extinguisher with abc powder once per year unit of capacity upto 04 05 06 kg , custom bid for services - total cost of optional spares for dcp type fire extinguisher , custom bid for services - total cost of optional spares for abc type fire extingusher , custom bid for services - loading and unloading of fes wooden wedges bypass coupler in slr guard van of trains at ghy and kamakhya ref annexure a , custom bid for services - refilling of n2 gas in 50 kg cylinder 200 kg per cm2 , custom bid for services - refilling of n2 gas in 24 kg cylinder 200 kg per cm2 total quantity :