The Beta Series of rockets (more information can be found here) is a planned rocket series including Beta I being the most powerful, with a planned lift capacity of 500,000t, Beta II with a planned lift capacity of 200,000t, and the currently in service Beta III with a capacity of 100,000t. Beta I is planned to be reusable, while the rest of the series is either partially reusable or expendable.
In Service Vehicles[]
The only Beta rocket in service is Beta III