3G三螺杆泵概述：     三螺杆泵是螺杆式定量容积式泵。由于主动螺杆与从动螺杆上螺旋槽相互啮合及它们与衬套三孔内表面的配合，得以在泵的进口与出口之间形成数级动密封室，这些动密封室不断   3GCL50×2 3GCL50×2U12.1W2 3GCL50×2U12.1W21 3GCL50×2U12.1W23   3GN50×4 3GN50×4U12.1W2 3GN50×4U12.1W21 3GN50×4U12.1W23   3GRH50×4A 3GRH50×4AU12.1W2 3GRH50×4AU12.1W21 3GRH50×4AU12.1W23 润滑油泵 3GRH70×2 3GRH70×2U12.1W2 3GRH70×2U12.1W21 3GRH70×2U12.1W23   3GC70×2 3GC70×2U12.1W2 3GC70×2U12.1W21 3GC70×2U12.1W23   3GCR70×2 3GCR70×2U12.1W2 3GCR70×2U12.1W21 3GCR70×2U12.1W23   3GCL70×2 3GCL70×2U12.1W2 3GCL70×2U12.1W21 3GCL70×2U12.1W23 深孔钻铣床 3GRH70×3 3GRH70×3U12.1W2 3GRH70×3U12.1W21 3GRH70×3U12.1W23   3GCL70×3 3GCL70×3U12.1W2 3GCL70×3U12.1W21 3GCL70×3U12.1W23 川润GRH85×2-40U12.1W2螺杆泵3GRH70×2   3GRH70×4 3GRH70×4U12.1W2 3GRH70×4U12.1W21 3GRH70×4U12.1W23   3GN70×4 3GN70×4U12.1W2 3GN70×4U12.1W21 3GN70×4U12.1W23 稀油站 3GRH85×2 3GRH85×2U12.1W2 3GRH85×2U12.1W21 3GRH85×2U12.1W23   川润GRH85×2-40U12.1W2螺杆泵3GRH70×2