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前言在毛主席革命路线指引下,阀门生产技术水平获得不断的提高,产量和品种都有较大的增长。但随着社会主义建设的发展,阀门产品无论在产量上,还是在质量上,均满足不了需要。在锅炉电站、化工石油、冶金矿山中,往往由于阀门满足不了要求,而使产品不能配套,影响国民经济的迅速发展。造成阀门行业短线的主要原因,一方面是阀门生产率不高;另一方面是阀门密封面寿命短。针对这种情况,有关部门提出了解决
Foreword Under the guidance of Chairman Mao’s revolutionary line, the technical level of valve production has been continuously improved, with a large increase in output and variety. But with the development of socialist construction, valve products in terms of yield, or quality, can not meet the needs. In the boiler plant, chemical oil, metallurgical mines, often due to the valve can not meet the requirements, leaving the product can not be supporting, affecting the rapid development of the national economy. Cause the valve industry is the main reason for the short-term, on the one hand is the valve productivity is not high; the other is the valve sealing surface life is short. In response to this situation, the relevant departments put forward a solution