Whole cover of pairing gold

Whole cover of pairing gold

  • CN 205,420,550 U
  • Filed: 12/17/2015
  • Issued: 08/03/2016
  • Est. Priority Date: 12/17/2015
  • Status: Active Grant
First Claim
Patent Images

1. a dual alloy entirety set, in parallel double-screw extruder machine barrel, it is characterised in that include matrix sleeve (1) and wearing layer (2), and described wearing layer (2) is attached to described matrix sleeve (1) medial wall.

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