Vacuum compound heat insulating pipe

Vacuum compound heat insulating pipe

  • CN 101,644,372 B
  • Filed: 08/21/2009
  • Issued: 03/18/2015
  • Est. Priority Date: 08/21/2009
  • Status: Active Grant
First Claim
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1. vacuum composite heat-insulating, be made up of inner and outer tubes, it is characterized in that between inner and outer pipe, be provided with the independent stainless steel of at least one deck or carbon steel vacuum heat insulation tube, this vacuum heat insulation tube is only with the double-layer vacuum pumping pipe that corrosion resistant plate or carbon steel board are welded, and described vacuum heat insulation tube between inner and outer pipe is spliced vertically by least two joints.

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