Shijiazhuang bridge aluminum doors and windows drilling equipment quadriceps combination drills mainly for aluminum windows and doors, curtain wall profiles, especially for long materials suitable for mass production does not exceed 250 × 250mm sectional profiles, achieve maximum machining length 5000mm long can be installed Drill seat, multi-groups meet at the same hole machining feed system uses Oleopneumatic feed smoothly Omron control system, can achieve any head linkage