Im wonder if can i use those strong, aluminium and lightweight laundry vent pipes to make the turbo piping

 

Why?You can get pipe so cheap these days i dont see the point in bothering.That said it might work.

 

You can use anything Sealing that piping is gonna be tricky. Also since they are "crush bent" the air won't flow as smooth. My local exhaust shop charged me $40 for all my piping, thats including chare pipe and intercooler pipe, all 2.5 inch.