Supply Of Compressed Oxygen Gas To Is No:309/2005 (Fourth Revision).Note: Firm Hasto Supply Oxygen Gas In Their Cylinders Of Each Capacity 7 Cum At Doorstep As And When Required Byconsignee (Sse/C&W/ Snf) And Firm Has To Collect Empty Cylinders In Return From The Consignee. [ Warranty Period: 30 Months After The Date Of Delivery ] ]