Shopping Cart with different number ranges

Dear SRM GURU's

We have two product Types one is material and other is service.

While we are creating a shopping cart for material it should pick up one sequence of the number ranges and when we are creating service shopping cart it should pick up some other number ranges.

Is it possible to maintain a separate number ranges for Material shopping cart and Service Shopping cart.

If yes

Then in Transcation type which alternate transcation type can be used ????

Current is SCH - for Shopping cart to which we assign the number ranges.

Regards,

Nimish Sheth