competitive e bidding for supply of new calendria for semikestner and pan season 2023-24 , supply for new semi kestner calandria body 2300m2with following specification- semi kestner body calandria- h.s. ( 2300m2 ) dia of tube plate - 4600mm ( internal ) tube plate thickness-32mm tube size - od 45x id 42x 4010mm length no. of tubes-4250 ligament- 12 mm calandria shell thickness- 16mm calandria shell above top tube plate- 100mm calandria shell below bottom tube plate- 200mm peripheral down take steam entry- 1000mm tie rod 2”- 16 nos. condensate outlet- 04nos. ( 150mm ) heavy ammonia connection ( ss 304 ) - 50mm x 5nos. light ammonia connection ( ss 304 ) - 50mm x 5nos. external ammonia connection- 1.5” x 4nos peripheral ammonia coil connection- 3” x 6nos suitable 04 nos. stools , supply for new calandria for 40ton pan with following specification- panbody calandria- h.s. ( 185m2 ) dia of tube plate -4300mm ( internal ) tube plate thickness-32mm tube size - 102x1.6x850mm length no. of tubes-770 ligament- 18mm calandria shell thickness- 12mm calandria shell above top tube plate- 100mm calandria shell below bottom tube plate- 200mm central down take dia-1760mm steam entry- 400mm tie rod- 16 nos. condensate withdrawal-02nos. ( double ) , 100mm each proper heavy & light ammonia withdrawl 2”dia and 5mm perforation ( ss pipe ) suitable 04 nos. stools