Metal crusher is used to grind pig iron,alloy,ferrosilicon,bottle cap,zip-top can,circuit board ... and waste battery. Metal CrusherProduct DescriptionIt is used to grind pig iron,alloy,ferrosilicon,bottle cap,zip-top can,circuit board ... . hardness< 9 level< 9 levelWeight1800 kg2500 kg Scrap Metal Shredder Crusher Grinder Machine