Q. Up to what thickness, can steel be welded using spot welding process?
✅ Correct Answer: (C)
12 mm
Explanation: in spot welding process, to bring the heated parts in contact with one another, mechanical pressure is applied. this pressure can be of three types, by using foot lever, by providing air pressure or by using a hydraulic cylinder. the use of these methods allows steel or other metal parts to be welded up to a thickness of 12 mm.