Pipe joining method

Details Pipe joining method Pipe joining method

B - Operations, Transporting

23

Q

26/78

B23Q 17/00 (2006.01) B21D 39/04 (2006.01) B29C 65/56 (2006.01) F16L 13/00 (2006.01)

Patent

CA 1255481

71745-3 Abstract of the Disclosure There is disclosed a method of joining pipe sections of a given outside diameter, comprising the steps of providing a sleeve of a predetermined length and having an inside diameter slightly less than the outside diameter of the pipe section, forcing the end of one pipe section into one end of the sleeve to a distance approximately one half the length of the sleeve to distend the one end of the sleeve radially to an extent slightly beyond the elastic limit of the material from which the sleeve is formed, forcing the end of the other pipe section into the second end of the sleeve to distend the second end of the sleeve radially to an extent slightly beyond its elastic limit while monitoring the force required to do so, and terminating forcing of the second pipe section into the second end of the sleeve when the required force as monitored starts to increase, indicating meeting of the ends of the pipe sections, whereby the contact pressure of the pipe ends is precisely regulated to ensure a correct contact pressure between the pipe ends and thus effective sealing of the pipe joint so formed.

510436

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