Indicates that the bend is seam welded.
B31.3
If the B31.3 piping code is active, the Seam Welded check box is used to activate the Wl box for bends. The Wl box is the weld strength reduction factor used to determine the minimum wall thickness of the bend element.
B31.3 Chapter IX
Not used.
IGE/TD/12
Used by IGE/TD/12 to calculate the stress intensification factors due to seam welded elbow fabrication as opposed to extruded elbow fabrication. This option is only available when IGE/TD/12 is active.