Gem Bids For Supply, Lattice Structure-mild Steel -ntpc Sipat-main, Lattice Structure-high Tensile Steel -ntpc Sipat-main, Lattice Structure-mild Steel- Ntpc Sipatadditional, Lattice Structure-high Tensile Steel -ntpc Sipat-additional, Lattice Structure-mild Steel -ntpc Singrauli, Lattice Structure-high Tensilesteel- Ntpc Singrauli