This standard specifies the shape and dimensions of test specimens with plate thicknesses of 0.5 to 5.0 mm and arbitrary weld diameters, as well as test methods for metal resistance spot and projection welded joints.
JIS Z 3137:1999 history
1999JIS Z 3137:1999 Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection welded joints
1990JIS Z 3137:1990 Method of tension test for spot welded joint