北京手扶拖拉机厂会同有关部门设计试制的太平门安全插销,经北京六十余家影剧院及公共场所试用表明:这种安全插销,是公共场所救险的理想设施。这种安全插销采用优质碳素钢,经过机械加工及热处理制成,它和普通插销一样,只用八个螺钉固定在门上,将门关闭,具有自锁性能,保证闭户安全。遇有火灾或其它 Beijing walking tractor factory in conjunction with the relevant departments to design trial Taiping safety latch, the Beijing more than 60 theaters and public places trial showed that: This safety latch, is the ideal place for public rescue. This kind of safety bolt is made of high-quality carbon steel, machined and heat-treated. It is the same as the ordinary bolt. It is fixed on the door with only eight screws, closes the door, and has the self-locking function to ensure the safety of the household. In case of fire or other