JPS63173595U - - Google Patents

Info

Publication number

JPS63173595U

JPS63173595U JP6621487U JP6621487U JPS63173595U JP S63173595 U JPS63173595 U JP S63173595U JP 6621487 U JP6621487 U JP 6621487U JP 6621487 U JP6621487 U JP 6621487U JP S63173595 U JPS63173595 U JP S63173595U

Authority

JP

Japan

Prior art keywords

circumferential surface

tube

heat insulating

inner circumferential

outer tube

Prior art date

1987-04-30

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 239000011810 insulating material Substances 0.000 claims 1
• 239000012779 reinforcing material Substances 0.000 claims 1
• 239000012774 insulation material Substances 0.000 description 1
• 239000000463 material Substances 0.000 description 1
• 230000002787 reinforcement Effects 0.000 description 1

Cited By (1)