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自应力钢筋混凝土压力管(简称自应力管)是水泥压力管的主要类别之一。据不完全统计,到1982年9月底我国已生产自应力管14528.83公里,占水泥压力管总产量的60％左右;在水泥品种方面,1969年只有普通硅酸盐自应力水泥一种,现在已有普通硅酸盐、硫铝酸盐、铝酸盐、明矾石等四种自应力水泥;成型工艺由原来的离心法又增加了立式振动法和悬辊法;产品规格在100—1000毫米的范围
Self-stressed reinforced concrete pressure pipes (referred to as self-stress pipes) are one of the main categories of cement pressure pipes. According to incomplete statistics, by the end of September 1982, China had produced 14,528.83 kilometers of self-stressing pipes, which accounted for about 60% of the total output of cement pressure pipes; in terms of cement types, only ordinary silicate self-stressing cements were available in 1969. There are four types of self-stressing cement such as ordinary silicates, sulphoaluminates, aluminates, and alumite; the molding process adds vertical vibration method and suspension roller method from the original centrifugal method; the product specification is 100-1000mm. Range of