We follow strict QC procedures throughout the production cycle:
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Raw material inspection (chemical composition & density)
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CNC machining for dimensional accuracy
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Brazing strength tests and ultrasonic checks
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Tip hardness testing (HRA ≥ 89)
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Simulated drilling tests (upon request)
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Final inspection and batch traceability
Our factory complies with ISO 9001:2015 standards. We also welcome third-party inspection or video factory audits, especially for bulk orders.