IDK what's more surprising, that you didn't post the actual throughput numbers, or that no one has asked here wtf they are.

There is no single throughput for pipes in Factorio. It is dependent on the distance (in pipe units) between the source and destination. The longer the distance, the slower the throughput. This can be mitigated by using pumps and underground pipes (even at maximum separation, each underground pipe pair is considered as 2 units.)

Read more here: https://wiki.factorio.com/Fluid_system#Pipelines

The K2 steel pipes have a health of 200 (i.e. can hold 200 units of fluid in 1 pipe segment) and a max underground pipe distance of 30 tiles.

IDK what's more surprising, that you didn't post the actual throughput numbers, or that no one has asked here wtf they are.

That's because it's automatically assumed that the reader knows the steel pipe's stats since it's ripped from a parent mod. Anyhow, for anyone else in the future, the steel pipes have a pressure of 125.