根据国家建委下达的任务,广西建委机修厂和西安机具研究所等单位发扬大干快上的革命精神,仅用五个多月的时间,于1977年4月底研制成功一种适用于六层以下大板建筑安装和一般建筑施工的45吨-米塔式起重机。该机已经过整机性能试验和结构应力测试,现已进入施工考核阶段。 According to the tasks issued by the National Construction Committee, the Guangxi Construction Machinery Repair Factory and Xi’an Machine Tool Research Institute and other units carried forward the spirit of revolution on the fast track. It took only five months or so and was successfully developed at the end of April 1977. 45 ton-metre tower crane for large-scale construction and general building construction. The aircraft has passed the complete machine performance test and structural stress test, and has now entered the construction assessment stage.