supply & delivery of deep groove bearing-6307, valve spindle with wedge and gi top cover plate of 150 mm dia alfa alfa valve (c-type) for maintenance of different state owned and operated major rli schemes under gazole (a-m) sub-division within malda-i (a-m) division under non-plan maintenance supply and delivery of deep groove bearing-6307, valve spindle with wedge and gi top cover plate of 150mm dia. a-a valve (c-type) for matnc of diff state o and o major rli schemes under gazole (a-m) sub-division within malda-i (a-m) division under np , supply and delivery , deep groove bearing size-6307, zz make tata/skf, bore diameter 35mm, outside diameter 80mm, width 21 mm, bore type cylindrical, case-sheet metal bearing materials- bearing steel. , valve spindle with wedge for alfa alfa valve (type-c) 150 mm dia (7 long m.s. spindle for ntp / alfa alfa valve as per is:2074/1992). , gi top cover plate of 150 mm dia alfa alfa valve (c-type) 273.1mm dia 10 mm thick and pcd 257mm with hub internal dia 20 mm outer dia 45mm 8 nos holes each 45 degree apart fitted for 150 mm nominal bore alfa alfa valve.