Supply‑chain complexity and diverse standards may lead to steel‑procurement risks, including supplier fraud.
I. Buy from Formal Sources
Select reputable official markets/authorized suppliers; avoid unlicensed vendors.
Prioritize famous brands. Verify valid certificates and factory test reports.
II. Steel On‑site Inspection
Visual check: No cracks, rust, pitting or slag inclusions. Dimensions meet design & national standards. Ends are straight, smooth and burr‑free.
Random sampling: Min. 3‑5 pieces per batch for rebar & plates to check mechanical performance.
Third‑party test: Engage SGS/BV if you doubt material quality.