I have done lots of sewer ejectors using ABS but the head was always under 10 ft. I just laid sixty feet of 2" ABS uphill in preparation for a sewer ejector line but this run has 19 feet of head, which will equate to about 10psi plus the impact of the pump when it kicks on. Tested out fine with five more ft. of water column before burial.
Burying it with 20" of earth cover will add some to the burst resistance.
I realize now I probably should have used PVC but should I dig it up/abandon the ABS and run PVC?