bids are invited for procurement of co2 gas and nitrogen gas with services m1060320608-gas chem carbon dioxide 99.8 percentage 25-35kg , hydrostretch testing and its certificate , cylinder painting and stamping , cylinder valve replacement including pur , cylinder valve spindle replacement incl , replacement of valve safety guard of hy , cylinder cleaning with oil in valve , cylinder gland nut replacement , cylinder valve ptfe washer replacement , cylinder valve brass washer replacement , cylinder dead nut replacemen , drilling out of broken valve , m1060150090-gas chem nitrogen 99.999 percentage is1747 , valve , spindle key , drilling out broken spindle , drilling out broken valve , washer , neck ring , bottom ring , gland nut , safety cap , cylinder testing charges , painting charges total quantity : 40426