A 90 Lbs Rail Pole (or 90 ARA-A Rail) is a heavy-duty steel rail, weighing approx. 44.65 kg/m (90 lbs/yard) with dimensions like 143mm height & 130mm base, used for heavy industrial tracks, mining, or crane rails, known for its durability and compatibility with North American standards, often made from alloy steel with specific tensile strength grades like 90UTS. Key Specifications: Nominal Weight: 90 lbs/yard (44.65 kg/m). Type: Heavy Rail, ARA-A Section (American Railway Association). Material: Alloy Steel (e.g., 900A/1100 grade). Dimensions (Approx.): Height: 142.88 mm (5.625 in). Base Width: 130.18 mm (5.125 in). Head Width: 65.09 mm (2.56 in). Web Thickness: 14.29 mm (0.56 in). Standard Lengths: Often 12m to 25m (39 ft is common in US). Tensile Strength: Available in grades like 90UTS (90 kg/mmï, 880 MPa). Applications: Mainline railways, mining, heavy cranes, automated warehouses.