Supply Of 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 Shall Arrange Prompt Collection Of The Empty Cylinders From The Designated Location..