JPS62119643U - - Google Patents

Info

Publication number

JPS62119643U

JPS62119643U JP649986U JP649986U JPS62119643U JP S62119643 U JPS62119643 U JP S62119643U JP 649986 U JP649986 U JP 649986U JP 649986 U JP649986 U JP 649986U JP S62119643 U JPS62119643 U JP S62119643U

Authority

JP

Japan

Prior art keywords

pipe

packing

welded pipe

evacuating

welded

Prior art date

1986-01-22

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

• 238000012856 packing Methods 0.000 claims description 3
• 239000001307 helium Substances 0.000 claims description 2
• 229910052734 helium Inorganic materials 0.000 claims description 2
• SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
• 238000010586 diagram Methods 0.000 description 2
• 239000007789 gas Substances 0.000 description 1
• 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
• 229920002554 vinyl polymer Polymers 0.000 description 1