Light steel rail, heavy steel rail, crane steel rail Product Description1). Steel rail type: Light steel rail, heavy steel rail, crane steel rail 2). Steel rail scope: Light steel rail: 5kg/m, 6kg/m, 8kg/m, 9kg/m, 11kg/m, 12kg/m, 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/m. Heavry steel rail: 38kg/m, 43kg/m, 50kg/m, 60kg/m. Crane steel rail: QU70, QU80, QU100, QU120. 3). Steel rail material: Q235, 55Q ...