vacuum calibration tank is mainly used to assist plastic pipe extrusion equipment. Main function is making the pipe round by vacuum, and sizing the pipe by cycle cooling water. The vacuum pump draws air and the equipment improve the vacuum by sealing. Circulating water is pumped through water pump. vacuum calibration tank  has double outlet pipe OD 16-32mm and four outlet pipe OD 16-32mm.

General pipe specification:

16， 20， 25， 32， 40， 50， 63

75，90，110，140，160

200， 225， 250， 315， 355， 400

450，500， 570，630，710

800，1000， 1200， 1400， 1600mm