Tender For supply of refilling of nitrogen gas cylinder - capacity 50 l, 200 bar (+- 10% ) scope of work - refiling of nitrogen cylinder as per rdso specification no. rdso/2013/cg-06(rev-3) or latest with fire rated valve duly certified bypeso. refilled cylinder with valves will be provided and empty nitrogen cylinder with fire r ated valve will be taken back.(inclusive of to & fro transportation cost of nitrogen cylinder and fitment cha rges) [ warranty period: 30 months after the date of delivery ]