Tender for Corrigendum : Supply Of Hss Parallel Shank Drill Bit (high Cobalt) As Per Is :5101:1991 (chemical Composition Grade Designation -xtiiomoioco8cr4w2 (co 7.75 - 8.75) As Per Is:7291-1981,size 4.2 Mm(d) Optimum Drill Bit Tip Type A/d Optimum Flute Angle For Use Drilling Operation On Stainless Steel . in Gorakhpur - Uttar Pradesh

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