GTAW is widely used for clean, high-quality, precision welding applications in almost all metals used in the construction and maintenance of ships and power plants.

• A. Only used for copper
• B. Woodworking
• C. Construction and maintenance of ships and power plants
• D. Automotive exhaust systems only

Answer: (C)

GTAW provides very clean, high-quality, precisely controlled welds, which is essential for critical joints across many metals. The process uses a non-consumable tungsten electrode with inert shielding gas to protect the weld pool, giving excellent control, strong corrosion resistance, and minimal contamination. This makes it ideal for metals commonly used in ships and power plants—such as steel, stainless steel, aluminum, and nickel alloys—where tight tolerances, strong welds, and clean appearances are important.

Because of these strengths, GTAW is widely used in the construction and maintenance of ships and power plants, where demanding service conditions require reliable, precision welding. The other options don’t fit this broad, high-quality application: GTAW isn’t limited to copper, isn’t about woodworking, and isn’t restricted to automotive exhaust systems alone.