Gem Bids For Supply Of Gases To Bhel Pssr Udangudi Site, 1760 Hydrogen In 7 M3 Cylinder Carbon-di-oxide In 30 Kg Cylinder Nitrogen With High Purity 99.999 Percent In 7 M3 Cylinder Nitrogen With Purity 99.99 Percent In 7 M3 Cylinder Purging For H2 Cylinder