Quality Assurance

Committed to being a professional supplier of cast rolls for many years


Thermo Fisher Scientific spark direct reading spectrometer

Thermo Fisher Scientific spark direct reading spectrometer

American Lico digital oxygen, nitrogen, and hydrogen gas analyzer

American Lico digital oxygen, nitrogen, and hydrogen gas analyzer

Leica Metallographic Microscope

Leica Metallographic Microscope

Vickers hardness tester

Vickers hardness tester

X-ray stress analyzer

X-ray stress analyzer

Microcomputer-controlled electronic universal testing machine

Microcomputer-controlled electronic universal testing machine

Pendulum impact testing machine

Pendulum impact testing machine

Ultrasonic flaw detector

Ultrasonic flaw detector

Leica AT500 laser measuring instrument

Leica AT500 laser measuring instrument

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Tangshan Yongfeng Roll Co., Ltd.
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