长缸筒是液压起重机的关键零件之一,它的精度和光洁度要求都比较高。加工这类缸筒,一般要用床面长度在15米以上的大型精密专用设备才行,可是当时厂里最长的车床也只有2.8米。在缺少资料和设备,任务又紧迫的情况下,厂革委会组织了以老工人为主体的“三结合”长缸筒攻关小组。他们坚持用毛泽东思想 Long cylinder tube hydraulic cranes is one of the key components, its accuracy and finish requirements are relatively high. The processing of such cylinder, generally use the bed length of 15 meters or more large-scale precision equipment for the job, but when the longest factory lathe is only 2.8 meters. In the absence of information and equipment, and the urgent task of the task, the Revolutionary Committee organized the old workers as the main “triple” long-cylinder research team. They insisted on using Mao Zedong Thought