It is mainly used for drilling profiles of aluminum alloy doors, windows and curtain walls, especially for long materials and mass production. It is suitable for profiles whose cross section does not exceed 250*250mm, and the maximum machining length is 5000mm~6000mm. Multi-head drilling machine can be installed to meet the simultaneous machining of multiple groups of holes. The gas-liquid damping cylinder is used in the feed system, and the feed is stable. First of all, we need to select......