The pipe that carries the waste water from your bathroom basin, kitchen sink, bath, shower etc is known as wastepipe and are typically supplied in 32mm ( 1"1/4 ) 40mm ( 1" 1/2 ) diameters Nominal lengths being 3 Metres (10ft)
Pushfit, the most common type of waste fitting due to ease of use.
Solvent pipe is often used where concealment or pressure issues exist.