As an export agent, QC is why we exist. Four gates plus full equipment make every shipment verifiable.
Verify material cert & heat number; sample chemistry & hardness baseline.
In-line size & surface sampling; monitor heat-treat curve.
100% visual + sampled size/hardness with inspection report.
On request: SGS / BV re-inspection with official report.
Optical & laser sorting, diameter accuracy ±0.001mm.
Rockwell & Vickers, full HRC / HV range.
Surface roughness gauge, Ra per grade spec.
Eddy-current + visual — no cracks, pits or rust.