Procedure for the manufacture of a metal tube, procedure for the operation of a pipe system without welding, pushboard and pipe system without welding

摘要

To manufacture a seamless metal tube the diameter of which is more than 7 inches namely 17.78 cm at a low cost, it is configured that a tube push bench bears works disposed in a unit before the tube push bench in a traditional production process, or transfer the works to a unit before the tube push bench in the traditional production process.