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Baimaoxing
Baimaoxing
Precision-machined carbon steel round bars are designed to meet structural load-bearing and precision machining requirements, encompassing a variety of grades: Low-carbon steel (1018, Q235B, A36) offers excellent cold formability, weldability, and ductility, making it ideal for components requiring bending, stamping, or general structural support; Medium-carbon steel (1045, 45#, 20#) balances machinability and heat-treatable strength, achieving a tensile strength of up to 600MPa after quenching and tempering, suitable for load-bearing shafts and mechanical parts; High-carbon steel (40Cr, 45Mn2) incorporates alloying elements, enhancing hardness and wear resistance, making it ideal for gears and tool blanks.
Flexible, project-specific specifications are available: diameters ranging from 3 mm (micro precision pins) to 500 mm (heavy-duty structural bars), standard lengths up to 6 meters, and custom cutting, chamfering, or threading services. Manufacturing processes are matched to steel grades—large-diameter structural bars are hot-rolled (ensuring grain refinement and toughness), while small-diameter precision bars are cold-drawn (achieving tight dimensional tolerances of ±0.03 mm and a smooth surface with Ra≤1.6μm). Optional surface treatments include blackening (black anodizing), phosphating (rust prevention), or polishing (meeting aesthetic and friction reduction requirements).
These round bars offer both cost-effectiveness and versatility, playing a crucial role in machinery manufacturing (precision shafts, bearings, fasteners), automotive (suspension components, engine connecting rods), construction (reinforcing bars, scaffolding pins), agricultural equipment (plow shafts, gear components), and mold making (mold blanks, drill bits). Products fully comply with GB/T 702, ASTM A108, and ISO 683-1 standards, and each batch undergoes rigorous quality verification, including ultrasonic testing, tensile/impact testing, and hardness (HB/HRC) measurement.
| Parameter Item | Detailed Description |
|---|---|
| Product Name | Aisi 4140 Flat Angle 1060 C45 Ck45 1095 1020 A36 Q235 Sae 1016 1084 Low Round Carbon 1045 1050 1055 Steel Bar |
| Standard | ASTM A106, ASTM A53, API 5L Gr.B, DIN17175, DIN1629 |
| Outer Diameter | 20mm - 610mm |
| Wall Thickness | 4mm - 70mm |
| Diameter Tolerance | Standard Control: OD:±1%, WT:±10% |
| Materials | 10#, 20#, 45#, 16Mn, A106(B, C), A53(A, B), API J55, API K55, Q235, Q345, ST35.8, ST37, ST42, ST45, ST52 |
| Inspection | ISO, BV, SGS, MTC |
| Supply Ability | 1000 metric tons/month |
| MOQ | 5 metric tons (Sample orders accepted) |
All products are packed using waterproof paper and secured with steel strips. Standard Export Seaworthy Packaging ensures safety for all modes of transport.
