bids are invited for refilling of fire extingusher mse refilling of 50kg capacity afff mechanical foam type fire extingusher as per is specification alongwith testing, painting, stamping etc complete in all respect , poviding and fiing isi make hose pipe for 50kg capacity afff fire extingusher , refilling of nitrogen gas 68 leter water capacity and 10 cubic meters gas quantity at 150kg per cm sq pressure of cylinder confirming to is 7285, purity of nitrogen be 99.9 percent , supply of 63 mm rrl fire hose pipe type b 30meter long confirming is 636, isi marked with a pain of 63 mm instantanious type male and female coupling of ss total quantity : 28