plug or slot weld symbol - About Plug Welds nft888 slot game

Above is indicating a ½” plug weld offset 1” from the edge to the center of the weld.

30" x 13" Steel Weld T-Slotted Table Cast iron Layout Plate Jig Weld 3 SLOT.

You could also include pitch distance between centers of slots by putting on the right side of the plug weld symbol 1.78 - pitch, and a flat line contour symbol with a G to indicate grind flush.