JPS6433378U - - Google Patents

Info

Publication number

JPS6433378U

JPS6433378U JP12552387U JP12552387U JPS6433378U JP S6433378 U JPS6433378 U JP S6433378U JP 12552387 U JP12552387 U JP 12552387U JP 12552387 U JP12552387 U JP 12552387U JP S6433378 U JPS6433378 U JP S6433378U

Authority

JP

Japan

Prior art keywords

pipe

groove

welding

pipes

welded

Prior art date

1987-08-18

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

• 238000003466 welding Methods 0.000 claims description 5
• 238000011144 upstream manufacturing Methods 0.000 claims description 4
• 238000000034 method Methods 0.000 description 2
• 229910000831 Steel Inorganic materials 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1
• 239000002184 metal Substances 0.000 description 1
• 239000011435 rock Substances 0.000 description 1
• 239000010959 steel Substances 0.000 description 1

Cited By (1)