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鱼尾板原系用普通碳素鋼軋制。解放以来,交通运輸方面飞跃发展,大小铁路运輸量随之增长,魚尾板(尤其是輕便軌道上用的鱼尾板)的用量驟然增多,但軋制设备跟不上需要。因此,自1954年起有些单位向我厂提出,以可鍛鑄鉄来铸造8kg輕軌魚尾板代替用普碳钢轧制。当时認为不改变原来設計的尺寸,以鉄代钢对使用强度是有問題的;經过討論明确,8kg轻轨一般多是作低速运輸之用,其安全系数的要求可以不如重轨那样高,所以就考虑試制。在試制中所有的尺寸均按照普碳鋼的魚尾板尺寸
Original fish plate with ordinary carbon steel rolling. Since the liberation, the transport sector has made rapid progress, with the consequent increase in the size of railways. The amount of fishplates, especially the fishplates for light rail tracks, has increased dramatically, but rolling equipment can not keep up. Therefore, some units have proposed to our factory since 1954 to cast 8kg light-gauge fishplates instead of plain carbon steel with malleable cast iron. At that time did not change the size of the original design, in order to replace the steel on the strength of use is a problem; after a clear discussion, 8kg light rail mostly for low-speed transport purposes, the safety factor of the rail as high as not as high , So consider the trial. In the trial of all sizes are in accordance with the size of the fishplate of carbon steel