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一、概述为了适应基本建设事业的发展,满足基础施工的要求,根据建设部《1983～1990年桩工机械新产品发展规划》(草案)的要求,瑞安建筑机械厂与建设部长沙建筑机械研究所在共同研制成功DZ20Y—14振动打
I. Overview In order to adapt to the development of basic construction and meet the requirements for basic construction, according to the requirements of the Ministry of Construction “Development Plan for New Product of Pile-punch Machinery from 1983 to 1990” (draft), the research and development of Changsha Construction Machinery of Rui’an Construction Machinery Factory and the Ministry of Construction The joint development of successful DZ20Y-14 vibration