Hydraulic pipe question

[Cooper]

What size tube are you guys using for hard hydraulic lines on 1:14- 1-10 equipment? I'm revamping an excavator and installing brass hard lines. I was planing on using k&s 5/32 pipe, or slightly smaller. My question is pressure related, 350-400 psi is what I'm looking at. I've used it in my dozer with no problems around 300-350psi. I'm thinking it will be fine but was just double checking. And wanted to know what others use. One of those things involving a lot of work only to realize oops, should have used the other stuff. Thanks

[Azonic]

I'm using 2.5/0.5mm brass tube on my Hitachi zaxis 470.