A helical door spring is a type of torsion spring used to facilitate the smooth opening and closing of doors. Made from coiled steel, the spring stores and releases energy as the door is operated. When the door is opened, the spring unwinds, and as the door closes, it winds back up, ensuring controlled, consistent motion. Helical door springs are commonly used in both residential and ... https://ritzdoorcloserindia.com/helical-door-springs/