In refuse collection points, there are often piles of scrap metal sheets, copper, etc. These scrap metals are collected and then transferred to iron smelters for recycling. However, scrap metal is often irregularly shaped and takes up a lot of space, which is not conducive to compression and transportation.

are used help remove airspace in metal waste. This is achieved by increasing density by compacting and reducing shred metal into a more cohesive whole.

Steel drums

Aluminum scrap