Final answer:
The welding method described is Gas Metal Arc Welding (GMAW), well-suited for thin low carbon steel and can be used for small production volumes with wire feeders.
Step-by-step explanation:
The method of joining metals described in the question is likely Gas Metal Arc Welding (GMAW). GMAW, commonly known as MIG welding, uses a wire feeding system which could be the 'wire or rod' referenced. It's well-suited for welding thin low carbon steel products which aligns with the description. GMAW can be automated or performed manually, and due to its equipment and setup, it is often used for smaller production volumes rather than for mass production. Unlike resistance spot welding which is often automated, GMAW tends to be a largely manual process when precision is required, making it a better fit for the description given by the student.