Supply Of Blow Through Cock Body (Part Finished) For Gauge Column Bottom Of X Class Locomotive As Per Drg No Goc/X/Sk-07-03510 Sheet 2. Note: 1. One Integral Test Piece Should Be Provided For One Heat Batch, It Should Be Parted In Presence Of Railway Authority For Material Testing Before Machini Ng. [ Warranty Period: 30 Months After The Date Of Delivery ] ]