what is this stuff called?

metal.

>>1127253
I mean like, I'm fairly sure it's for making metal shelves/racks but does this part specifically have a name?

>>1127248
Looks a bit like some type of Simpson tie

It is a type of extrusion.

>>1127256
https://www.mcmaster.com/#perforated-framing/=168snc9

>>1127260
Okay, this is more like it, thank you.

>>1127248
looks like drywall corner bead

File: Slotted_angle_prod_1[1].jpg (28KB, 418x246px) Image search: [Google]

28KB, 418x246px

>>1127248
https://en.wikipedia.org/wiki/Slotted_angle
also colloquially known as angle iron in Bong - the natives having invented both this (Dexion), and everything else worthwhile in the world. Do not, under any circumstances, buy the alibaba shit unless you have a very good sense of humor.

>>1127390
Exactly what I was looking for, thank you!

>>1127257
I thought this. A truss clip or something

Dexion is a common brand of this here.

here in oz its called slotted angle.

>>1127248

Slotted Angle

Also see Unistrut

>>1127390
sometimes called puched angle.