Lab benches are categorized into a number of material structures based on the type. The steel wood all steel you mentioned are the two most common.

Steel wood lab bench:

Its material as the name suggests:steel frame is the main structure of the frame, the other is wood.

Its characteristics: stable structure, easy to replace, cost-effective

All-steel laboratory bench:

Its material: all steel

Its characteristics: all-steel overall design layout of the atmosphere beautiful, long service life easy to damage.

The above summary is a simple comparison of the two, different materials for different special environmental requirements.