双头螺旋 meaning in English

double-threaded screw
twin-feed spiral

We are mainly engaged in designing , manufacturing and selling various single stage water pumps , stainless steel chemical engineering pumps , hot oil water pumps , vertical horizontal multistage pumps , horizontal split casing pumps as well as fire fighting , water supply packages
其中组合式自吸泵进出口多方位联接泵新型立式多级泵新型结构多级泵获得国家专利， 600汽车助力泵被列为国家技术创新项目av新型立式多级泵被评为省高新技术产品t101 t102液压组合单元dsp双头螺旋泵被列为国家级新产品。