在毛主席革命路线指引下,在批林批孔运动推动下,宝鸡石油机械厂为了适应我国石油工业飞速发展的需要,组成工人,干部和技术人员三结合小组,经过一年的艰苦奋斗,于一九七四年五月,自己设计试验成功了第一台大功率、大排量、高压力的NB—800泥浆泵。经厂内全负荷试验,证明基本达到设计要求。最大功率可达800马力,最高压力可达200 Under the guidance of Chairman Mao’s revolutionary route, promoted by the approval of the Lin Piao and Confucius Movement, Baoji Petroleum Machinery Factory, in order to meet the needs of the rapid development of China’s oil industry, formed a combined group of workers, cadres and technicians, after a year of hard work, In May 1974, he successfully designed and tested the first high-power, large-displacement, high-pressure NB-800 mud pump. After the factory full load test, it is proved that the design requirements are basically met. Maximum power up to 800 horsepower, maximum pressure up to 200