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Gem Bids For Copper Alloy Gate Valve For Waterworks Purpose As Per Is 778 (q3) , Sluice Valve For Water Works Purposes (50 To 1200 Mm Size) (v2) As Per Is 14846 (q3) , Swing Check Type Reflux Valves For Water Works Purposes (single Door Pattern) (v2) As Per Is 5312 (part1) (q3)
