That's cool! What kind of connections do they use?
I put steel couplings a nipples on mine so I don't wear out the aluminum pipes wrenching on them all the time.
The hydrofracker I work with has gone to double gasket-ed threaded connectors. He has two beautifully set up rigs that solely do fracking as a single contained unit. With the current set ups he can hit three wells a day per rig at higher pressures and volumes than anyone else.
The connectors he's using have a deep taper like drill strings and seal with gaskets. For the most part he can thread and un-thread them by hand. I keep thinking about going to those, the concern is if you put a three phase pump on it and it runs the wrong way you could un-thread them fairly easily. If I go that route I might add same type of safety.
I've yet to spend much thought on it as just going to aluminum was such a quality of life improvement, if I hit a point where I'm going to replace the steel tips I'll look deeper into it.