Liquefied Petroleum Gas (Lpg) For Metal Cutting, Conforming To Is:4576/1999 (Reaffirmed 2009), Shall Be Supplied In The Cylinders Of Supplier Of 19 Kg Capacity . The Supply Shall Be Made On A Door-Delivery Basis, As And When Required By Sse/C&W/Snf. After Consumption, The Empty Cylinders Shall Be Returned By The Railways, And The Supplier S Hall Arrange Prompt Collection Of The Empty Cylinders From The Designated Location. [ Warranty Period: 30 Months Afte R The Date Of Delivery ] ]