Procurement of 660mm LENGTH AIR BRAKE HOSE COUPLING FOR [ 660mm LENGTH AIR BRAKE HOSE COUPLING FOR FEED PIPE DRG NO. WD- 81027- S- 01, ALT. 14 SPECIFICATION NO. APPENDIX- F OF SPEC. 02- ABR. 02, AMENDT. NO. 4 OF SEP. 2016. SPECIAL CONDITION: ENSURE THAT THE PLASTIC DUMMY CAP SHALL BE IN RED COLOUR WITH THICKNESS 3. 5 TO 4 MM. ]