Hydraulic Copper Pipe Crimping Tools Are essential for any plumber or HVAC technician, allowing for the quick and secure connection of copper pipes. A hydraulic copper crimping tool crimp fitting onto a pipe, forming a watertight connection with maximum strength. Because hydraulic copper crimping tools provide an efficient way for plumbers and HVAC technicians to connect copper piping, they are very popular. Our Jingyan brand offers good-quality hydraulic crimper tool designed to help get the job done right.