First of all, prepare the glue and apply it evenly to the location where the insulation elbow needs to be wrapped. Then take out the prepared insulation cotton and paste the insulation cotton while applying the glue, so that it can be quickly Do this to prevent the glue from drying out. After wrapping, the shape of the insulation elbow can naturally be revealed, and then the plastic insulation pipe is installed inside the elbow, which can protect and fix the elbow to a certain extent. The wrapped insulating elbow is wrapped with a few more layers of tape on the outermost layer. The tape has a waterproof effect. When the insulating elbow is in a humid and cold environment, the tape can prevent water from entering the insulation cotton. If the water in the insulation cotton is very large, Elbows can easily freeze.