Steel Round Bar

High-strength alloy steel round bar, cold drawn to 50mm diameter with quenched and tempered treatment. Certified to EN10204 3.1, ideal for crankshafts, gears, and construction. Custom lengths and surface finishes available.

SAE1045/S45C carbon steel hexagonal bar, cold drawn for precision dimensions. Offers high strength with 600 MPa tensile and 400 MPa yield after quenching and tempering. Custom sizes from 14mm to 100mm. ISO, CE, JIS certified. Free samples available.

High-strength SAE4140 alloy steel round bar, OD 200-600mm. Quenched and tempered to 28-32HRC. Ideal for gears, shafts, and axles. Custom sizes and surface finishes available. Certified to AISI, JIS, and DIN standards.

High-quality AISI 6150/51CrV4 spring steel round bar, 5mm-1000mm diameter. Excellent toughness and fatigue resistance. Supports custom sizes, heat treatment, and surface finishes. Ideal for automotive and industrial springs.

High-strength alloy steel round bar for spring applications. Diameter 5-1000mm, length 3000-6000mm. Hot rolled, cold drawn, or forged. Custom sizes, heat treatment, and surface finish available. Seaworthy packing. China supplier.

High-strength alloy round bar in SAE4340/40CrNiMoA, ideal for shafts and gears. Manufactured via EAF+LF+VD, with UT inspection. Diameters 80-1200mm, customizable lengths. Competitive pricing and fast global shipping.

High strength S355JR cold drawn round bar, 25mm diameter x 3000mm length. Meets EN 10025-2 standard. Excellent durability and weldability for structural applications. Custom sizes and surface finishes available. Reliable quality with 25 years production experience.

High-strength alloy steel round rod with 0.33-0.38% carbon and 0.8-1.1% chromium. Offers excellent wear resistance and durability. Ideal for bolts, spindles, and piston rods. Available in diameters 20-420mm with ISO certification. Custom lengths and surface finishes supported.

High-strength 4135 alloy steel round bar with bright polished surface. Ideal for shafts, bolts, and spindles. Diameter 20-420mm, length 6-11m. ISO certified, MTC available. Custom lengths and finishes offered.

High-strength 35CrMo/SAE4135 alloy steel bar, hot rolled to 6m length. Features precise chemical composition, excellent durability, and includes a 3.1 certificate. Ideal for shafts, bolts, and machine parts. Custom sizes and fast delivery available.

Cold drawn SAE5140 alloy steel round bar with Φ18.3x2500mm, HRC 28-32. Equivalent to 1.7035/1.7045. High durability, impact value ≥12J/cm2. Custom sizes available. ISO9001 certified, supported by Baosteel and TISCO.

High-strength 40Cr alloy steel round bar, quenched and tempered to HRC 28-32. Bright cold drawn surface with H9 tolerance ensures precision. Ideal for shafts and gears. Ultrasonic tested per SEP 1921. Custom sizes and small trial orders welcome.

SAE1045 cold drawn steel bar offers higher tensile and yield strength, smooth surface, and tight tolerances. Available in round, hex, and flat shapes from 5mm to 120mm. Ideal for shafts and induction hardening. Custom sizes and certifications available. Fast delivery.

High-carbon chromium bearing steel round bar in GCr15/52100/100Cr6 grade. Diameter 280mm, oil quenched to 62-65 HRC. Suitable for bearings, shafts, and axles. Ultrasonic tested, custom sizes available. Competitive pricing.

High-strength EN 10085 31CrMoV9 alloy steel forged round bar, 250-470mm diameter. Offers excellent tensile strength up to 1300 MPa and impact resistance. Ideal for demanding industrial applications. Custom sizes and surface finishes available.

High-strength 31CrMoV9 alloy steel forged bar and shaft, EN 10085 certified. Diameter 3-480mm, tensile strength up to 1300 MPa. Ideal for tempering-annealing applications. Custom sizes and surface options available.

High-strength 31CrMoV9 nitriding steel bar, heat treated and machined for durability. Tensile strength up to 1300 MPa. Custom diameters from 3-480mm. EN 10085 certified. Ideal for shafts and industrial components.

High-strength chromium vanadium spring steel round bar, 180mm diameter. Offers excellent hardness and toughness. Suitable for shafts, gears, and heavy-duty springs. Available in hardened or annealed conditions. ISO certified with customizable sizes and surface finishes.

High durability 51CrV4 spring alloy steel round bar, hot rolled, 5-1000mm diameter. Ideal for heavy-duty springs and mechanical parts. Meets ASTM AISI 6150 and DIN 1.8159 standards. Custom sizes, heat treatment, and surface finishes available. Reliable for industrial applications.

High-strength nitriding steel rod in 35mm diameter, grade 1.8519 31CrMoV9. Hot rolled with excellent wear resistance and toughness. Ideal for heat-treated components. Custom sizes and surface options available. EN 10085 certified.