I SAW SOME PARTS THAT WERE WELDED WITH A CIRCUMFERENCE RESTENCE WELD WITH 20 TO 1 METAL THICKNESS RATIO ON ONE END AND 9 TO 1 METAL THICKNESS RATIO ON THE OTHER END.
300 SERIES STAINLESS AND THERE WAS PENATRATION INTO THE THICKER MATERIAL FROM THE THINNER LAYER MATERIAL WITHOUT EXPULSION OF AT THE WELD SEAM.
HOW IS THIS POSSIBLE?