Suppliers for straight gauge thin walled tubing in Europe?

[Johannes]

Maybe here you find what you’re looking for: Nahtlose Edelstahlrohe - MBS Systems.

[Johannes]

And one more with stainless tubes and bars: Nahtlose Edelstahlrohre 1.4301/1.4306/1.4307/304/304L - Stainless Europe online shop

[Edelbikes]

Here’s some 40x0.9mm
https://www.aero-parts.eu/tube-acier-25cd4-40-x-09-mm-c2x29284183

[Robertt]

Anyone know where I can get triple housing guides in europe?

[Otto]

I got some from here:
https://www.custom-academy.de/shop-rahmenbauteile/anlötteile-braze-on/zuganschläge-führungen/führung/

though thats a framebuilder themselves, so they might have limited stock.