Gem Bids For Steel Tubes, Tubulars And Other Steel Fittings As Per Is 1239 (part 2 - Steel Pipe Fittings) (q3) , 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)