Dear Pareshbhai
First let me introduce my self my name is Karthik recently joined to this forum
Yes below answered by Mr Yagay is correct
If you are transferring excise able raw material to your inter unit than you have to clear it under excise able invoice only & pass on the duty same what extent you have taken credit in your present unit and in Invoice you can mention as "Input Cleared as such"
and if your an assessee under Large Tax Payer Unit than there is no need to pass on because under LTU scheme you have an facility of removing of inputs & Capital Goods from one unit to another without payment of duty/reversal of cen vat credit.
And regarding to CST
CST will applicable only if you sell the goods to interstate but here you are transferring material from your one unit to another unit which is located in another state, hence CST is exempted against Form "F " you have to collect the form F from your interstate unit towards the material transferred (In invoice u can mention as Branch Transfer only not for sale & CST exempted against form F)
Rgds
Karthik