SMH serial Screw pump is a kinds of high pressure self-priming Triple screw pump, because of the unit assembly system every pump can be supplied as cartridge pump for foot-,flange-or wall mounting, in pedestal-,bracket-or submersible design. According to the delivery medium heated or cooled designs are also available. Each pump has 4 installation types: horizontal, flanged, vertical and wall-mounted. Single-suction medium pressure series The performance parameter and reliability of three screw pumps depend a greatly extent on the machining accuracy of manufacturing devices. Shuangjin pump has got leading manufacturing level of the whole industry in china and advanced machining methods. The company have bought more than 20 sets of advanced machines abroad, such as screw rotor CNC grinding machine and high-accuracy screw three-dimensional testing instrument from Germany, which represent advanced machining lever of screw rotor, high efficient and high-accuracy screw machining milling machine and machining and detecting machines for screw milling cutter from Britain, high-accuracy inner-rotor CNC milling machine for lengthening screw from Austria, optic projector from Italy, machining center capable of various complicated technical process from Germany and Italy, universal tool microscope and measuring machine from Japan, deep hole drilling machine from Germany, large-size CNC turning machining center from Germany etc. Besides, there are also high-accuracy coordinate boring machine, optics curve grinding machine, large-size planer-type milling machine etc. accuracy also have reached international advanced level. Currently Shuangjin has got the ability to machining various screw rotors with different screw lines, whose diameter range from 10~630mm and length range from 90~6000mm.Flow Q (max): 300 m3/h. Differential pressure △P (max): ~10.0MPa. Working temperature t (max): 150℃. Medium viscosity: 3~3X10⁶cSt.