Chemical Spectrometer Verification
Cold Header Dimension Check
Heat Treat Hardness Check
Optical Sorting Inspection
In-line laser micrometers monitor cold-forging head diameters, shank tolerances, and thread pitch parameters against strict DIN and ISO engineering prints.
Automated Rockwell C and Vickers hardness testing verifies core tensile strength and case-hardening depth across every quenched production batch.
Dual-camera high-speed optical sorting systems inspect 100% of finished fasteners, eliminating out-of-tolerance parts to maintain sub-50 PPM defect limits.
Incoming raw material wire rods undergo laser spark emission spectrometry to confirm exact carbon, alloy, and stainless steel chemical composition.
Verifiable Industrial Performance
<50 PPM
Defect Limit Threshold
1,000 hrs
Salt Spray Corrosion Resistance
HRC 38-45
High-Tensile Hardness Range
100%
Lot Traceability Documentation
Verify Production Capabilities Directly
Request complete batch test records, material composition reports, or schedule an on-site technical audit with our Tainan metallurgical engineering team.