supply and delivery of water pump and its accessories under berhampore ( am ) sub-division , supply and delivery of 150x150 mm nominal diameter centrifugal pump ( make venus ) as per is-6595 ( part-i ) / 1993 , suitable for 20 to 24 hp prime mover , having discharge minimum 200 cubic meter per hour at 18 meter head and rated rpm-1500 . minimum efficiency of the pump should be 76% . , supply and delivery of ms shaft for 150 mm x 150 mm dia of centrifugal water pump ( make venus ) made from en8 steel with case harden at the place where bearing are mounted as per sample , supply and delivery of ms shaft for 150 mm x 150 mm dia centrifugal water pump ( make aei ) made from en8 steel with case harden at the place where bearing are mounted as per sample , supply and delivery of gm bush for 150 mm x 150 mm dia centrifugal water pump ( gec make ) conforming to is 318 / 1981 matching with venus ( make ) water pump shaft as per sample , supply and delivery of ball bearing no 6307 ( tata / hmt / skf )