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立足满足国内金属制品行业日益增长的需求 ,冶金部建筑研究总院研究开发的ＹＪＲ - 30 0型拉伸应力松弛试验机填补了国内一项空白 ,打破了该项目进口试验机的局面。ＹＪＲ - 30 0型拉伸应力松弛试验机主要用于检测预应力钢丝、钢棒和钢绞线的松弛性能。其价格为进口英国松弛试
Based on the growing demand of the domestic metal products industry, the YJR-300 tensile stress relaxation testing machine researched and developed by the Ministry of Metallurgical Building Research Institute has filled a gap in China and broke the project of imported testing machine. YJR - 30 0 tensile stress relaxation testing machine is mainly used to detect the relaxation of prestressed steel wire, steel bar and strand performance. Its price is imported British relaxation test