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70年代初,预应力低碳冷拔钢丝应用技术在砼构件生产中已发挥了巨大作用,砼预制板生产由单一的短线生产发展到短线、长线生产工艺并重,快速脱模、外振拉模等设备亦相继问世。1973年国家建委向江苏下达研制砼挤压
In the early 1970s, prestressed low-carbon cold-drawing steel wire application technology has played a significant role in the production of yttrium components. The production of pre-manufactured stencils has evolved from a single short-term production to a short- and long-term production process. Rapid demolding and external vibration drawing Equipment has also come out one after another. In 1973, the National Construction Committee issued a squeeze to Jiangsu for development.