The middle layer of the aluminum-plastic composite pipe is made of welded aluminum pipe, and the outer and inner layers are made of medium density or high density polyethylene plastic or cross-linked high density polyethylene, which are bonded and compounded by hot melt adhesive. The pipe not only has the pressure resistance performance of metal pipes, but also has the corrosion resistance performance of plastic pipes, and is an ideal pipe material for water supply in buildings. The aluminum-plastic composite pipe is generally crimped with a threaded ferrule, and its accessories are generally made of copper. It is first to put the fitting nut on the end of the pipe, then put the inner core of the fitting into the end, and then use a wrench to tighten the fitting and the end. Just the nut. The high temperature resistance performance is good, the construction is convenient and the labor efficiency is greatly improved.
