china deep hole drilling machine Z3080x28 1.max. drilling dia. 80mm, 2.ISO 9001:2008, 3.CE CERTIFICATE. Features: 1) Hydraulic preselection speed and feed change mechanisms2 ... ) Perfect performance, safe, reliable and easily operating, high accuracy, ample rigidity and long service life5) Drilling, reaming, counter boring, boring, tapping DescriptionZ3080 ...