Shapes: Square / Flat / Rectangular
Sizes: 10mm x 10mm x10mm to 60mm x 60mm x 60mm
Surface: Black oxide, polished, or mill finish
Standards: GB/T 699 (45# steel), ASTM A108

✅ Premium Material: Made of Chinese 45# carbon steel , hardened for superior strength and machinability.
✅ Precision Cold-Drawn: Smooth surface finish (Ra ≤1.6μm) with tight tolerances (±0.1mm).
✅ Multi-Format: Available as square blocks, flat bars, or small precision blanks for versatile applications.
✅ Tool-Grade Quality: Ideal for molds, jigs, and industrial tooling with HRC 18-22 hardness.