... of power material-conveying, separating, mixing, measuring and automatic .adapt the CE.have a long history Specifications 1. ... constructional plumbing, cable laying, etc. This PVC Pipe Extrusion Line is composed conical twin-screw extruder, vacuum calibration tank, ... additionlly attached with length counter and intensifying device. This line is of reliable performance and high production effeciency. we ...