procurement of spares of lp bypass hydraulic drive system of make welland and tuxhorn and spares of recirculation valves of bfp of make mil for aoh of unit no. 10 , ph-iv, stps, sarni. procurement of spares of lp bypass hydraulic drive system of make welland and tuxhorn and spares of recirculation valves of bfp of make mil for aoh of unit no. 10 , ph-iv, stps, sarni , spares parts for hydraulic drive system nbf 630 cnr (900) hydraulic diagram no. h-c-31525a-900-630 , high pressure filter element for filter pos.5 (01002833)/500/1 , low pressure filter element for pos.17 and 64 (01002831)/500/8 , oil regenerating filter element type et 718-dr-crn for pos. 65 (01040113)/500/9 , hp hydraulic hose dn 10 x 550 mm (s09201)/500/15 , hp hydraulic hose dn 20 x 1500 mm (s09203)/500/16 , hp hydraulic hose for oil cooler(s09205)/500/17 , oil regenerating filter element type pd 718-dr-crn for pos. 65 (01040114)/500/10 , high pressure pump pos. no. 16 , spares of recirculation valves of make mil of bfp , gland packing set , body gasket , seat gasket , ptfe gasket , balancing seal set , plug stem s/a , seat ring , liner-spacer s/a