We have done a project for a company who is a manufaturer of tower internals for refineries.
The applications accepts different standard inputs and generates drawings script (for AutoCAD), generates part list in excel format and also gives costing of each part using formulaes and considering differnt material, various parameters like thickness, density, height, length, width etc.
The application is developed using using .NET C# and MS SQL 2000. We have short flash presentation ready to give you the idea about the application rather than writing.
Do let us know if you want to see the presentation then we can proceed further
Thx
Harsh Parekh
Smile Software, INDIA
p.s. I still need to study your exact req. to bid corretctly. I hv bid randomly just to submit my reply on this project.