As you have given the idea to get Securities wise deliverable data in the followed link
http://www.nseindia.com/marketinfo/equities/securities/sechist.jsp?inputtext=BHEL&Fromday=23&Frommon=10&Fromyr=2006&Today=3&Tomon=11&Toyr=2006&check=new"
Do you know how to get the Historical Data like this in CSV file.
Please Help me