S rock rukom Kaiyuanzhichuang, Hitachi 450 može bez napora obavljati različite zadatke.
Kaiyuan Rock Arm, as a multi-purpose modified arm, is suitable for mining without blasting, such as open-pit coal mines, aluminum mines, phosphate mines, sand gold mines, quartz mines, etc. It is also suitable for rock excavation encountered in basic construction such as road construction and basement excavation, such as hard clay, weathered rock, shale, rock, soft limestone, sandstone, etc. It has good Učinci, visoka čvrstoća opreme, niska stopa kvara, visoka energetska učinkovitost u usporedbi s lomljenjem čekića i niskom bukom. Rock Arm je prvi izbor za opremu bez uvjeta eksplozije.
