present invention is to C & C Pipe Coaster (CNC pipe coaster) of the knurling (Knurling) to form a roller on relates. This will be described in more detail below, is provided by the large diameter of the metal pipe on the side of the pipe cutter for cutting the pipe to be processed and the work is rotated without slippage by forming a concave-convex form of the C & C nulling the roller coaster to rotate the pipe processing pipe will ; gist of the subject innovation is in the C & C Coaster pipe connected to motor installed on the side of the pipe cutter to the long axis equipped with a plurality of rollers (tumblers) connected to the reducer, the processing of pipes and grounding processed to the indentation pattern of a diamond shape on the outer peripheral side of the roller and then was formed by heat-treating a nulling-environment, which rotates in the direction of the working pipe side to make it easy to cut and shape processing to the pipe cutter and the pipe placed in a C & C Coaster move or close contact with the pipe is idle by the grounding of the pipe and the roller when processing will be effective in preventing and improving productivity by reducing the phenomenon bad.
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