Yes..
Here's a chart that explains it
https://www.glaciertanks.com/sizing.html
For smaller OD tubing (1/2" & 3/4") and (1" & 1.5"), the Tri Clamp ferrules sizes are combined for each pair
The 1/2" and 3/4" tubes both share the 3/4" Tri Clamp ferrule (0.984" flange), and the same is true for...