The choice of cladding versus lining of pressure retaining items primarily depends on cost. Cladding can be applied by welding, roll forming or by explosive bonding. In this case, the corrosion resistant barrier is directly attached or bonded to the substrate.
For lining (which is similar to wall papering except no adhesive is used), the corrosion resistant barrier is not directly bonded to the substrate, instead the ends of the lining are seal welded.
Here is a thread for starters on this subject;
thread794-109624