tender for supply of new calendria of quad 1st body 560 m2 h.s. with bottom cone central down take for year 2024 -25 supply of new calendria of quad 1st body 560 m2 h.s. with bottom cone central down take for year 2024 -25 , particulars , supply of new calendria of quad 1st body 560 m2 h.s. with bottom cone & central down takefor year 2024-25 specification:-heating surface - 560m2 dia of tube plate - 3150 mm thickness of tube plate - 32 mm size of tube plate - 42x45x2010 mm ligament - 13 mm shell thickness - 16 mm no. of tubes - 2145 mm bottom cone thickness - 22 mm (bottom soccer) no. of tie rods - 7 nos size of steam entry - 700 mm pitch of tubes - 58 mm dia of down take - 560 mm size of condensate box - 210 x80 with proper ammonia header & water connection.