Method for welding tubular members of stainless steel
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United States of America Patent
Stats
-
Jan 27, 1981
Grant Date -
N/A
app pub date -
Jul 10, 1979
filing date -
Jul 11, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In welding tubular members of stainless steel, metal is deposited by build-up welding on a portion of the inner surface of each tubular member adjacent an edge thereof where welding gives a heat affection and exposed to a corrosive fluid when in service, and melting a portion of the inner surface of each tubular member in a zone adjacent to the metal deposited by build-up welding and affected by the heat of the build-up welding, said portion being exposed to the corrosive fluid when in service. Following the completion of these two steps, the tubular members of stainless steel are welded at the edges thereof to be joined. The method has the effect of preventing the occurrence of stress corrosion cracking at the inner surface of the piping which is near the joint and exposed to the corrosive fluid.
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