Hot-rolled steel has excellent properties such →∏&as high ↑Ω↔φ strength, good toughness, easy proce✔↔★≈ssing and good weldability, and is wide∑ly used ®≠↔ in manufacturing industri¶∏$es such as construction, machinery, boi✘∞ε lers, and pressure ♣φ ↔π vessels
