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对四川长城协和钢管厂和常州大平超声仪器公司协作研制用于德国努开姆超声探伤设备上的能对晶粒较大钢管探伤的低频探头研究成果进行介绍。
The research results of the low-frequency probe that could be used to test the larger steel tube of the crystal grain on the ultrasonic testing equipment of NUMK in Germany were researched on the cooperation of the steel pipe plant of Great Wall of Sichuan Province and Changzhou Daping Ultrasonic Instrument Company.