Q235 Steel Square Bars are Chinese carbon structural steel square bars compliant with GB/T 700 standards, featuring ≤0.22% carbon, 0.30-0.65% manganese, and low phosphorus/sulfur content. With a minimum yield strength of 235 MPa and tensile strength ranging 375-500 MPa, they offer excellent cold-forming capabilities and ≥26% elongation. Supplied in hot-rolled condition, these bars exhibit good weldability and machinability, making them ideal for construction (building frames, scaffolding), machinery (brackets, fasteners), and general engineering applications.

A36 Steel Hexagon Bars are hexagonal carbon structural steel bars manufactured to ASTM A36/A36M standards, composed of ≤0.25% carbon, 0.80-1.20% manganese, and strictly controlled phosphorus/sulfur content. With a minimum yield strength of 250 MPa (36 ksi) and tensile strength ranging 400-550 MPa (58-80 ksi), they offer excellent cold-forming capabilities and 20% elongation. Precision cutting via flame or plasma methods ensures dimensional accuracy, while low-hydrogen welding processes guarantee structural integrity. Their cost-effectiveness and versatility make them a preferred choice for general engineering applications requiring moderate strength and reliable fabrication.

ASTM A572 Steel Hexagon Bars, conforming to the ASTM A572/A572M standard, are high-strength low-alloy (HSLA) structural steel bars with excellent mechanical properties and versatility. Composed of ≤0.23% carbon, ≤0.40% silicon, ≤1.50% manganese, and trace elements like niobium (0.005-0.05%) or vanadium (0.01-0.15%), these bars achieve a minimum yield strength of 345 MPa (Grade 50) and tensile strength ranging from 490-600 MPa, with ≥22% elongation and ≥45J impact energy at 0°C. Widely used in construction, bridges, machinery, and pressure vessels, they excel in demanding environments requiring high strength, toughness, and weldability.

SAE 1018 Steel Hexagon Bars are low-carbon alloy steel components characterized by their hexagonal cross-section and versatility in manufacturing. With a carbon content of 0.14-0.20% and manganese content of 0.60-0.90%, these bars exhibit excellent machinability, weldability, and formability. They are commonly cold-drawn or hot-rolled to achieve precise dimensions and smooth surface finishes. Mechanical properties include tensile strength of 440-590 MPa, yield strength ≥370 MPa, and elongation ≥15%. Ideal for automotive parts, shafts, fasteners, and machinery components, SAE 1018 bars comply with ASTM A108 standards.

SAE 1020 Steel Hexagon Bars are low-carbon, cold-drawn structural steel hexagonal bars defined by ASTM A108 standards. With a carbon content of approximately 0.20%, they offer excellent machinability, weldability, and moderate strength, making them ideal for manufacturing shafts, bolts, fasteners, and general engineering components. These bars exhibit a tensile strength of 410-580 MPa, yield strength around 230 MPa, and elongation exceeding 35%, ensuring ductility for cold-forming processes. Available in various sizes, these bars provide cost-effective solutions for projects requiring reliable mechanical properties and ease of fabrication.

SAE 1045 Steel Hexagon Bars, conforming to SAE/AISI standards, are medium-carbon structural steel bars with chemical composition of 0.42-0.50% C, 0.60-0.90% Mn, and 0.15-0.35% Si. They exhibit excellent mechanical properties, including tensile strength ≥585 MPa, yield strength ≥450 MPa, and elongation ≥12% in hot-rolled/normalized states. After heat treatment (quenching and tempering), hardness reaches HRC 50-60 while maintaining good toughness. Widely used in automotive, machinery, mold, gear, bearing, and engineering equipment sectors, these hex bars comply with ASTM A276, DIN 176, and EN10278 standards. Surface treatments like pickling, sand blasting, or electro-galvanizing enhance corrosion resistance.

S235JR Steel Hexagon Bars are non-alloy structural steel hexagonal bars conforming to EN 10025-2, characterized by low carbon content (≤0.17%) and controlled manganese (≤1.40%) for optimal weldability and formability. With a minimum yield strength of 235 MPa and tensile strength ranging 360-510 MPa, they offer excellent cold-forming capabilities and impact toughness at ambient temperatures. These bars are typically supplied in hot-rolled or normalized conditions, suitable for construction (frames, brackets), machinery (shafts, fasteners), and general engineering applications requiring moderate strength and reliable fabrication.

S275JR Steel Hexagon Bars are low-alloy high-strength structural steel hexagonal bars compliant with European standard EN 10025. Composed of ≤0.21% carbon, ≤1.50% manganese, and strictly controlled phosphorus/sulfur content, they offer a balance of strength (430-580 MPa tensile strength) and toughness (≥27 J impact energy at 20°C). These bars are supplied in hot-rolled, controlled-rolled, or normalized states, enabling excellent weldability without preheating. Widely used in construction, machinery, and energy sectors, they adapt to heavy loads and harsh environments.

S335JR Steel Hexagon Bars, conforming to European standard EN 10025-2, are low-alloy high-strength structural steel bars with excellent strength, toughness, and weldability. Composed of ≤0.22% carbon, ≤1.60% manganese, and ≤0.55% silicon, they achieve a minimum yield strength of 335 MPa and tensile strength ranging from 470-630 MPa, with ≥20% elongation. These bars exhibit ≥27J impact energy at 20°C, ensuring reliability in dynamic loads. Widely used in construction, bridges, shipbuilding, machinery, and energy sectors, they support heavy-duty applications. Available in hot-rolled, normalized, or controlled-rolled states, their hexagonal cross-section (conforming to DIN EN 10061) offers versatility in mechanical assemblies.

SS400 Steel Hexagon Bars are carbon structural steel products conforming to JIS G3101 standards, widely used in industrial applications requiring strength and versatility. Characterized by excellent weldability, formability, and moderate tensile strength, these hexagonal bars are ideal for manufacturing components subjected to torsional or shear stress, such as fasteners, shafts, and machinery parts. Their hexagonal shape enhances grip stability during machining and assembly. SS400 steel offers a balance of cost-efficiency and durability, making it suitable for construction, automotive, and general engineering sectors. Available in various diameters and lengths, the bars are typically supplied in hot-rolled or cold-drawn conditions with black or galvanized finishes.

Q345 Steel Hexagon Bars are low-alloy, high-strength structural steel hexagonal bars manufactured under China's GB/T 1591-2008 standard. They exhibit a minimum yield strength of 345 MPa, with tensile strength ranging from 490 to 675 MPa and elongation ≥21%. Widely used in construction, machinery, bridges, and pressure vessels, Q345 Hexagon Bars offer efficient installation due to their hexagonal shape, reducing machining requirements. Their robust mechanical properties and adaptability to cold environments make them ideal for structural and industrial applications.

Q235 Steel Hexagon Bars, conforming to China's GB/T 700-2006 standard, are carbon structural steel components with a hexagonal cross-section. Composed of ≤0.22% carbon, ≤1.4% manganese, and strict controls on sulfur/phosphorus content, they offer a minimum yield strength of 235 MPa and tensile strength of 370-500 MPa. These bars exhibit excellent weldability, formability, and machinability, making them ideal for structural frameworks, machinery components, and automotive parts. Widely used in construction, bridges, and general engineering, Q235 hex bars balance cost-effectiveness with reliable performance for non-critical load-bearing applications.