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Contact SupplierWe offer ASTM A572 GR.50 Alloy Structural Steel Round Bar suitable for bridges. With a diameter range of 5.5mm to 250mm and thickness range of 5.5mm to 25mm, our round bars come in 6m length options. This alloy structural steel meets ASTM A572 Gr.50 grade specifications and manufacturing standards including ASTM, JIS, GB, and DIN. Choose from galvanized or black finish surface options, packed securely in bundles. As a leading manufacturer and supplier, we provide high-quality steel round bars for various applications.