Does a 70 mm wall hold?

[Strip]

I am going to build a wall where on one side there will be a bathroom and on the other a wardrobe. I'm thinking of drywall+OSB on one side and only OSB on the other, with 45x70 mm studs c/c 400. Will this wall hold for two sturdy 900mm sinks, or should I increase the size of the studs?

 

[Farzan]

It will probably hold, but make sure there are kortlingar where the sinks are to be screwed in.