A pipe hanger is a device used to support and secure pipes in various construction and plumbing applications. It helps maintain the proper alignment and spacing of pipes, preventing sagging or movement that could lead to damage or leaks. Pipe hangers come in various designs and materials, including metal and plastic, to accommodate different pipe sizes and weights. These hangers are typically installed on walls, ceilings, or beams and can be adjustable or fixed. Proper installation of pipe hangers is essential for ensuring the longevity and efficiency of plumbing systems and HVAC systems, as they help manage the weight and stress on the pipes.