50 Small Pipe Punching Machine Precision Slope Support Small Pipe Punching Machine Knowledge
The production of advanced small conduits in tunnels is generally made of seamless steel pipes with a diameter of 32-42mm. Make a cone shape about 10cm long at the front end of the small conduit, and weld a steel hoop with a diameter of 6-8mm at the tail end. No holes shall be opened within 100cm from the rear end, and the remaining part shall be punched into a circular hole with a diameter of 6MM using a Han Yue small pipe punching machine in a plum blossom shape of 20-30 cm, also known as an overflow hole.
