| Structural Steel Bars | Construction, machinery frames | ASTM A370 certified (Tensile Strength ≥500 MPa) ▲ 3% dimensional tolerance ▲ Bright surface (ISO 8296) ▲ | High versatility (cutting/bending/welding) ▲ Cost-effective for structural applications | Lower corrosion resistance without coating ▲ Limited to carbon steel grades |
| Reinforcing Steel Bars | Concrete reinforcement, bridges | ASTM A615 (Yield Strength ≥420 MPa) ▲ Ribbed surface for concrete adhesion ▲ | Superior bond strength with concrete ▲ High tensile strength for load-bearing | Prone to corrosion without epoxy coating ▲ Less formable than cold-rolled variants |
| Alloy Steel Bars | High-stress machinery, automotive parts | ASTM A314 (Tensile Strength ≥700 MPa) ▲▲ Custom alloy composition (e.g., chromium/molybdenum) ▲▲ | Enhanced durability under extreme stress ▲▲ Heat-treated for wear resistance | Higher cost due to alloying ▲▲ Complex machining requirements |
| Stainless Steel Bars | Chemical plants, marine equipment | ASTM A276 (Corrosion resistance ≥304 grade) ▲▲ Non-magnetic (AISI 304/316) ▲ | Excellent corrosion resistance in harsh environments ▲▲ Hygienic surface for food-grade use | Lower tensile strength vs carbon steel ▲ High production cost ▲▲ |
| Galvanized Steel Bars | Outdoor infrastructure, fencing | ASTM A153 (Zinc coating ≥85 µm) ▲ Hot-dip galvanized surface ▲ | Superior rust protection in wet/damp conditions ▲ Long lifespan in corrosive environments | Heavier than uncoated bars ▲ Costly coating process ▲ |
| Cold Rolled Steel Bars | Precision machinery, automotive parts | ASTM A108 (Tolerance ±0.5%) ▲▲ Smooth surface (Ra ≤1.6 µm) ▲▲ Cold-rolled microstructure ▲▲ | Ultra-high precision for tight tolerances ▲▲ Improved surface finish for aesthetics | Lower formability after cold working ▲ Higher production cost vs hot-rolled ▲▲ |