Project Industria 1.0 - Part1 Modular Tube System

So I thought I give it another go and use the experience I gained to begin this new project.
Part1 of the project Is a modular tubing system.
At this moment it contains 49 different pieces and it has 3 different sizes: small, medium and large.
More may be added on a later stage.

I painted 1 batch in less then 4min and this is how:

3D printing settings
I printed them without support on 0.24 layer height and 300 mm/s