Every hydraulic cylinder is tested in the factory:
Test pressure = 1.5 x max. operating pressure.
Standards applied:
DIN 24336 (mounting dimensions)
ISO 8132 (accessories)
This series is not available in HäKo, but can be requested from Hänchen.
With the respective type of fixation, the operating pressure indicated in the parts list can be exploited statically and dynamically without restrictions. However, the safety respectively required in your system and the stress caused by dynamic movement must be taken into account.