Standard Method of Test for
Helical Continuously Welded Seam Corrugated
Steel Pipe
AASHTO Designation:T 241-95 (2004)
SCOPE
This method describes the procedure to be used in determining the quality of the seam or helical, continuously welded seam, corrugated steel pipe.
The procedure to be used involves distorting a short length of welded seam by using a 25-mm diameter, hemispherical punch and a 38-mm inside diameter contoured die.
The resulting distorted weld area will hereafter be called the “cup.”
At the option of the engineer, or in the event of a disagreement between the engineer and fabricator, the referee test described in Section 4 will be performed.
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