Piano hinges making process in a local factory of China

This video describes the detailed process of producing piano hinges by a Chinese manufacturer specializing in piano hinges. In this video you can learn in detail how a steel plate is made into a high quality piano hinge step by step. Piano hinges are also called continuous hinges or long hinges. It is many times longer than a normal butt hinge and mainly serves for more stability and precise rotation. It is commonly used in RVs, conversion vans, pianos, or other areas where weight bearing and precise control of opening and closing is required.