MULTIWALL STEEL TUBE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 2, 2010
app pub date -
Nov 26, 2007
filing date -
Nov 29, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
This aims to provide a multiplex-wound steel pipe which can be sufficiently supplied in its manufacturing procedure with copper needed when brazed, which has its surface freed from any re-solidification of copper, and which has a satisfactory fillet formed at its seamed portion. A steel plate includes one face having a copper-plated film thickness (t1) and the other face having a copper-plated film thickness (t2) such that the copper-plated film thickness (t1) of that one face is smaller than the copper-plated film thickness (t2) of the other face, and such that the steel plate is formed into a tubular shape having that one face positioned on the outer side face of the multiplex-wound steel pipe.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully