Zhoushan Shenglong machinery Co.Ltd, which is located in Zhoushan city,Zhejiang province, is a main professional manufacturer of making screws and barrel for more than ten years.

We specilized in design and manufacture of a full series of screws and barrels, applied for various extruding machines and plastic injection molding machines. In addition, we also design and manufacture screws with special alloys and special flight geometry to meet specific customer applications. We not only offer the best possible screws and barrels, but also provide solutions to help customers solve extruding and injection molding problems.

We have outstanding theoretical background and practical experience, providing optimum designs of screws and barrrels for our customers. Our engineers conduct thorough analysis according to customers machine model,production capacity required and resin properies before design. All related parameters that may affect screw performance are designed based on theorem, such as screw type, L/D ratio,flight depth,flight density, helix angle and so on. This outstanding design capability will ensure Shenglongs screws and barrels help customers upgrade product quality and production efficiency.
    
What we do is to guarantee the highest level of quality for each screw and barrel from Shenglong Machinery.