Gem Bids For Top Ring 70Tk As Per Drg. No. 34547750006 Rev. 00As Per Material Specification Aa22002. 70Tk X 109, Top Ring 80Mm Tk As Per Annexure-A Withdimension 80Mm Tk X 600Mm I/D X 2000Mm O/D Var.00. Mater, Top Ring 80Mm Tk As Per Annexure-Awith Dimension 80Mm Tk X 702Mm I/D X 1632Mm O/Dvar. 01. Mater