Exactly my point Pard, there are plenty of hose repair / manufacturer places around the world, they are used in many industries. As you mentioned, brake specialists can do this too. Flex line, is fairly cheap can be ran about anywhere and with SS armor, is just as sturdy as solid steel, in fact in some instances is better, because if there is a vibration issue, it'll move around a bit, instead of eventually rubbing a wear spot / hole in it.
Aaron