Method for preparing tube weld sample for internal visual inspection
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United States of America Patent
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Apr 14, 1998
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N/A
app pub date -
Mar 28, 1996
filing date -
Mar 28, 1996
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Abstract
A process for preparing tubular coupons formed of a pair of tube lengths butt-welded together with a full depth circumferential weld includes partially diagonally cutting the coupon sample through its transverse dimension so as to leave a thin bending strip along one wall of the coupon about which the coupon is bent for inspection of the internal surface of the weld area. Two procedures are described, both of which leave the interior surface of the weld exposed adjacent the diagonal cutting line through the coupon. The procedure facilitates bending open the cut coupon for internal inspection of the weld area. A jig fixture for holding the coupon during cutting by a band saw blade is described.
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