Patent ID: 7396224

Claim:
A calibrating basket for a calibrating station in an apparatus for producing plastic pipes, the calibrating basket comprising: adjusting spindles; and calibrating tools disposed successively at a distance from one another over a circumference of a pipe, said calibrating tools include calibrating strips extending in a longitudinal direction of the pipe to be calibrated, said calibrating strips disposed on said adjusting spindles in a radially adjustable manner, said calibrating strips each having a sliding surface with an outlet opening formed therein and coming into contact with the pipe, said calibrating strips each having recesses formed inside said calibrating strips, said recesses being connected to said outlet opening in said sliding surface and running along a longitudinal axis of a respective calibrating strip, a second recess of said recesses is for connecting to a vacuum source; and a pressure-tight annular space, said calibrating strips disposed in said pressure-tight annular space.