Currently there is no way in nopCommerce to configure the product for specific type of shipping.
There are many store owners which sell product lines which are applicable for a specific type of shipping only.
Many product can only be shipping only by ground / standard etc and currently there is no way to configure / connect a product with specific type of shipping only.
It would be great to have this feature in upcoming version(s) so that nopCommerce meet requirements of all type of store owners / products.