在批林批孔运动普及、深入、持久开展的大好形势下,温州地区工科所和温州水泥制品厂协作,组成以老工人为主体的“三结合”试验小组,进行了用矾浆代替矾土水泥制造自应力水泥压力管的试验研究工作。经过五个月的努力,试制成φ200、φ250矾浆自应力水泥压力管三批,部分经检压鉴定,符合技术要求。自应力水泥压力管是管道的一个发展方向,它节省钢材,工艺简单,耐久性好。随着社会主义建设事业的日益发展,需要量将越来越大。但是,生产自应力水泥压力管的矾土水泥 Under the favorable situation of popularization, in-depth and long-term development of batches, the Wenzhou Regional Engineering Institute cooperates with Wenzhou Cement Products Factory to form a “triple bond” experimental group with old workers as the main body, and instead of earthworms Cement production of self-stressed cement pressure tube experimental research work. After five months of hard work, three batches of self-stressed cement pressure pipes with φ200 and φ250 retting were made. Some of them were identified by pressure check and met the technical requirements. The self-stressing cement pressure pipe is a development direction of the pipeline, it saves steel, the process is simple, and the durability is good. With the increasing development of socialist construction, the demand will increase. However, alumina cement produced from self-stressed cement pressure pipes