Gem Bids For Supply Of Cast Carbon Steel 350nb Swing Type Non Returnvalve As Per The Annexure A, Supply Of Cast Carbon Steel150nb Swing Type Non Return Valve As Per The Annexure B, Supply Of Wafer Type Cast Carbon Steel 350 Nb Butterflyvalve As Per The Annexure C, Supply Of Flanged Type Castcarbon Steel 350 Nb Flanged Butterfly Valve As Per Theannexure D, Supply Of Wafer Type Cast Carbon Steel 150nb Butterfly Valve As Per The Annexure E