JPH0173591U - - Google Patents

Info

Publication number

JPH0173591U

JPH0173591U JP1987169785U JP16978587U JPH0173591U JP H0173591 U JPH0173591 U JP H0173591U JP 1987169785 U JP1987169785 U JP 1987169785U JP 16978587 U JP16978587 U JP 16978587U JP H0173591 U JPH0173591 U JP H0173591U

Authority

JP

Japan

Prior art keywords

double pipe

resin

reinforcing material

outside

core

Prior art date

1987-11-06

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

• 239000011347 resin Substances 0.000 claims description 5
• 229920005989 resin Polymers 0.000 claims description 5
• 239000003566 sealing material Substances 0.000 claims description 2
• 239000012779 reinforcing material Substances 0.000 claims 4
• 229910000831 Steel Inorganic materials 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1
• 239000010959 steel Substances 0.000 description 1