tender for belrayan supply of ms fabricated vaccume pan calandria , ms fabricated vaccume pan calandria with ms bottom source as per following details:- pan capacity 40 ton, heating surface 19/m2, calandria inner dia-3510 mm, calandria shell thickness-12mm, top & bottom tube plate thickness-28mm, condensate connection-100mm (02 nos), light & heavy ammonia connections 50mm (04 nos), down take dia-1510mm, bottom saurce thickness-16mm existing size of tube-96x100x1215mm, no of tubes-524 nos, distance/weight of tube plate b(w)=1150mm, note-party site engineer visit the station to take accurate specification/measurement for the fitting of calandria & no of holes in calandria plate