After stock in, take s∏©amples in propotion. Te→ σst items are chemical co&>‌>mposition, macrostructure,non>∏-mettalic inclusion,crystal deg♦∑÷ree,decarburized layer∞•Ω,tensile test,impulse test, ultra<≥<✘sonic test etc. Materials that psss allπ♠ above test items can be used.

  chemical compositions by spa ≥rk Spectrometer

          &nbsα✔★‌p;     Macrostructure and no≈®nmetallic inclusions by metalloscope

      ₹§      Inspection for internal defec₩©ts by digital ultrasonic

Confirm qualified mateσ&λrials with their steel gradφ ∞₩e,specifications,qualif©γ←☆ied marks,then hoist them on mater☆σ€ial bed.

On each bar’s top e'♥nd,within 50mm to top, mark the€←↕​ last 6 production numbers by lα©'£aser marking machine f§₽or traceablity.

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