Steel Round Bars are cylindrical carbon or alloy steel products widely used in industrial manufacturing and construction. Complying with standards like ASTM A108, EN 10083, or GB/T 699, they typically contain 0.15-0.45% carbon and 0.60-1.65% manganese for balanced strength and ductility. Mechanical properties include yield strength 210-550MPa, tensile strength 370-700MPa, and elongation 10-30%, depending on grade. Manufactured via hot-rolling, cold-drawing, or forging, they feature smooth, galvanized, or black surfaces. Ideal for shafts, axles, bolts, and machinery components, these bars excel in weldability, machinability, and load-bearing capacity.

Q235 steel round bar, a versatile carbon structural steel, is renowned for its excellent weldability, machinability, and cost-effectiveness. With a carbon content of 0.14-0.22%, it offers balanced tensile strength and ductility, making it ideal for construction, machinery, and automotive components. Whether for infrastructure projects or industrial equipment, this alloy delivers durability without compromising affordability. Elevate your engineering solutions with Q235 steel round bars—contact us today to discuss how this time-tested material can transform your next project.

Q345 steel round bar, a low-alloy high-strength structural steel, combines superior yield strength (≥345 MPa) with exceptional toughness and weldability. Enriched with elements like manganese and vanadium, it delivers enhanced load-bearing capacity and resistance to fatigue, making it perfect for bridges, heavy machinery, and high-rise structures. Upgrade your heavy-duty projects with Q345 steel round bars—reach out now to explore how this premium material can optimize durability and safety for your engineering marvels.

A36 Steel Round Bar is a versatile carbon structural steel renowned for its excellent weldability, formability, and mechanical strength, making it ideal for construction, machinery, and fabrication projects. With a minimum yield strength of 36,000 psi, it ensures durability in structural beams, brackets, and automotive components while offering cost-effective performance. Its reliable machinability and corrosion resistance simplify processing and longevity. Upgrade your projects with A36 Steel Round Bar today—contact us to experience unmatched quality and reliability for your next engineering challenge!

A572 steel round bars are high-strength low-alloy (HSLA) structural steel bars under ASTM standards, available in grades 42, 50, 55, 60, and 65. Grade 50 is most common, offering 50 ksi yield strength. These bars combine high tensile strength with excellent weldability, eliminating preheating needs. Their low carbon content enhances formability for bending and machining.Primarily used in construction, bridges, and heavy machinery, A572 bars provide lightweight yet durable solutions for beams, columns, and crane runways. Corrosion-resistant coatings extend service life in harsh environments. Their superior strength-to-weight ratio reduces material costs while meeting seismic and load-bearing demands. A572 Grade 65 is favored for high-stress applications like offshore platforms.

1018 Steel Round Bars are low-carbon, cold-drawn alloy bars with ~0.18% carbon content, offering excellent machinability and weldability. Ideal for shafts, bolts, and general engineering, they balance strength and ductility. Their uniform microstructure ensures consistent performance in CNC machining and forming operations. Compliant with ASTM A108 standards, these bars resist deformation under moderate loads. Surface treatments like galvanizing enhance corrosion resistance for outdoor applications. Widely used in automotive components, furniture frames, and hydraulic systems, 1018 steel provides cost-effective reliability. Its moderate hardness (Rockwell B ~70) suits both cold-working and mild heat treatment processes.

4140 Alloy Steel Round Bar is a chromium-molybdenum steel celebrated for its high strength, exceptional toughness, and superior wear resistance, making it ideal for heavy-duty applications. Heat treatment enhances its performance, delivering excellent machinability and hardenability for gears, shafts, and structural components. Its ability to withstand extreme stress and fatigue ensures reliability in aerospace, automotive, and oil/gas industries. Choose 4140 Alloy Steel Round Bar for your critical projects—contact us today to experience unmatched durability, precision, and engineering excellence!

4340 Alloy Steel Round Bar is a nickel-chromium-molybdenum steel renowned for its exceptional strength, toughness, and fatigue resistance, ideal for high-stress applications. Engineered for superior machinability and weldability, it excels in aerospace components, gears, shafts, and heavy-duty machinery after heat treatment. Its ability to achieve ultra-high strength via quenching and tempering ensures reliability in critical loads. Elevate your most demanding projects with 4340 Alloy Steel Round Bar—contact our experts today to unlock unmatched performance and durability!

S235JR Steel Round Bar is a European-standard carbon structural steel prized for its exceptional strength, weldability, and adaptability across industries. With a minimum yield strength of 235 MPa, it delivers reliable performance in structural frameworks, bridges, and machinery, offering excellent machinability and impact resistance at ambient temperatures. Its balanced chemical composition ensures consistency in fabrication, from bolts to heavy-duty assemblies. Elevate your engineering solutions with S235JR Steel Round Bar today—reach out now to secure superior quality, durability, and value for your most demanding projects!

S275JR Steel Round Bar is a European-standard carbon structural steel celebrated for its superior strength, outstanding weldability, and reliable performance in demanding applications. With a minimum yield strength of 275 MPa, it excels in structural frameworks, bridges, and heavy machinery, offering excellent machinability and impact toughness at ambient temperatures. Its balanced composition ensures consistency in fabrication, from bolts to large-scale assemblies. Choose S275JR Steel Round Bar for your next project—contact us today to unlock unmatched strength, precision, and long-lasting value!

S355JR Steel Round Bars are low-alloy, high-strength structural steel bars compliant with EN 10025-2 standards, featuring a minimum yield strength of 355 MPa. Composed of ≤0.22% carbon, ≤1.60% manganese, and controlled phosphorus/sulfur levels (<0.025%), they offer excellent weldability and cold-forming adaptability. With tensile strength ranging 470-630 MPa and 20°C impact energy ≥27J, these bars excel in construction (beams, columns), bridges, and heavy machinery. Their corrosion-resistant coatings enhance durability in marine/coastal environments, while high strength-to-weight ratios reduce material costs.

SS400 Steel Round Bar is a widely-used carbon structural steel celebrated for its high tensile strength, excellent weldability, and reliable performance in construction and manufacturing. With balanced ductility and machinability, it excels in bridges, buildings, and machinery components, ensuring structural integrity under stress. Its cost-effectiveness and adaptability to fabrication processes make it a preferred choice for diverse industrial applications. Choose SS400 Steel Round Bar for your next project—contact us now to experience durability, precision, and unmatched value!