关于日本利根公司的总的情况,赵国隆同志已做过介绍。有鉴于管材加工质量对钻探工作有着十分重要的意义,在此把利根公司在绳索取心钻杆加工、处理及使用中的一些情况再作某些补充介绍,以便同业人员研究和引借。 Regarding the general situation of Japan’s Lee Gen company, Comrade Zhao Guolong has already introduced it. In view of the quality of pipe processing is of great significance to the drilling work, some additional information about the processing, processing and use of the Cornell drill pipe at the Cornell Company is hereby introduced so as to facilitate the study and lending of the staff.