陕西省延河 水泥机械厂制氧 站研制了一种安 全方便的新型气 瓶帽。 这种新型气 瓶帽和旧式瓶帽 相比,有以下优 点:一、它固定 在气瓶上,工人 充气和使用气瓶 时不用拆卸,既 减轻了劳动强 度,又防止了丢 失。二、体积小,重量轻,可适用于各种型号的气瓶。三、采用球墨铸铁制成, Shaanxi Yanhe Cement Machinery Factory oxygen station developed a new type of safe and convenient gas cap. Compared with the old bottle cap, this new type of gas bottle cap has the following advantages: First, it is fixed on the gas bottle, and when the worker inflates and uses the gas bottle, it does not need to be disassembled, which not only reduces the labor intensity but also prevents the loss. Second, small size, light weight, can be applied to various types of cylinders. Third, made of ductile iron,