Welding insert ring and method of welding therefor
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United States of America Patent
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-
Oct 4, 1983
Grant Date -
N/A
app pub date -
Jun 12, 1981
filing date -
Jun 12, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method of and apparatus for welding of a pair of in-line pipes which utilizes a pair of insert rings. Initially, in the root area of the weld there is located an inner insert ring, which is welded to the pair of abutting pipes by a root welding path. An outer insert ring which is constructed of two identical pieces is located exteriorly about the inner insert ring between the pair of in-line pipes. The outer insert ring includes a laterally extending flange which is to be tack welded to the exterior surface of the pipe which is abuts. The main section of the outer insert ring is then melted to fuse together the pipes. The tack welding of the flange to the pipes keeps the main section of the outer insert ring located between the abutted edges of the in-line pipes.
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