METHOD FOR REPLACING LEAD PIPES WITHOUT REALIZING TRENCHES, AND APPARATUS FOR IMPLEMENTING SAME

摘要

P Method for replacing lead pipes (1) without making trenches, characterized in that a cutting tool (10) is passed inside the lead pipe (1), then pass into the pipe (1) cut according to a generator a widening cone (11), this widening cone (11) also serving as a drive member for a plastic renewal pipe (12). / P