notice inviting tender for procurement centrifugal pumps spares , supply material at rcf trombay unit ( as per technical specifications annexure-iii ) , stuffing box cover for centrifugal pump model 1 1/2 x 1-7a ) specification : as per drg 450-m-281b ) service conditions :sulphuric acid/nitric acid pumpspeed= 3000 rpm , c ) material of construction:1 ) alloy 20 a 351 cn7mnotes:1 ) stuffing box cover shall be defect free and single piece andtolrences within the limit of iso -5199 . 2 ) materila test certificate from nabl / govt approved laboratory , insapection and testing reports , rcf shall perform the pmi test tovarifyi the material . 3 ) vendor shall mark the name/ logo/ year of mfg . / partno/ code noetc . on shaft and sleev4 ) packing for the safe trasportation . , volute casing for centrifugal pump model 1 1/2 x 1-7a ) specification : as per drg 450-m-311b ) service conditions :sulphuric acid / nitric acid pumpspeed= 3000 rpm , c ) material of construction: 1 ) alloy20 conforms to a 351 cn7mnotes:1 ) materila test certificate from nabl / govt approved laboratory , insapection and testing reports , rcf shall perform the pmi test tovarifyi the material . 2 ) vendor shall mark the name/ logo/ year of mfg . / part no/ code noetc . 3 ) packing for the safe trasportation .