procurement of im-2 is-15500 hp accessories and tools to provide handpump spare part , 32 mm. dia. g.i.pipe b class each 3 mtr. long both side threaded and socket at one end as per ( is:15500 part - ii ) , 12 mm dia.connecting rod each 3 mtr length having one coupling welded & check nut on other sideas per ( is:15500 part - iv ) , cylinder assembly ( complete unit inclusive of stainless steel plunger rods 12mm. dia with nitrile rubber pump bucket ) suitable for deep well hand pumps ( im-ii ) as per ( is:15500 part - ii ) , roller chain with coupling as per ( is:15500 part - iv ) , water tank assy. for im-ii ( is:15500 part - iv ) , head ( is:15500 part - iv ) , handle bar ( is:15500 part - iv ) , axle pin with nut stainless steel . , ball bearing 6204 zskf , upper valve with rubber seat , lower valve with guide & rubber seating , hexagonal rod coupling , cylinder body with brass linear , reducer cap for cylinder , leather pump bucket washer , rubber sealing ring