Manufacturing method of combined mandril

Manufacturing method of combined mandril

  • CN 103,337,319 A
  • Filed: 06/14/2013
  • Published: 10/02/2013
  • Est. Priority Date: 06/14/2013
  • Status: Active Grant
First Claim
Patent Images

1. composite type plug manufacture method may further comprise the steps:

  • One, some plugs is arranged in certain sequence;

    Two, the plug that arranges in the step 1 is twined with the winding material;

    Three, the plug that winds in the step 2 is cured.

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