QU100 rail, with a head width of 100 mm, is engineered for high-load applications. Built to YB/T 5055-2014 standards and commonly made from U71Mn or other high strength steel, it features a robust profile with thick webbing for excellent structural integrity. Weighing 88.96 kg/m, it is widely used in heavy-duty crane runways at major ports and industrial zones, where high-frequency and high-weight lifting operations demand dependable rail support.