tender for supply of calendria for 4th quad body for season 2024-25 , supply of calendria for 2nd quad body , quad 2ndbody calandria- h.s.(440m²) dia of tube plate-3020 mm( internal) tube plate thickness -32 mm tube size- od 45 x id 42 x1885 mm length nos. of tubes - 1760 ligament 13 mm calandria shell thickness – 12 mm calandria shell above top tube plate- 50 mm calandria shell below bottom tube plate- 150 mm central down take 500 mm dia steam entry – 800 mm with suitable jacket tierod – 25 mm ( 06 nos) condensate out let – 01 nos.( 150 mm) suitable ammonia connection ( ss 304) out side effective heavy & light noxious gases proper withdrawal with ss pipe suitable 04 nos stools.