🔍 Key Concepts

• Common industrial welding methods used in heavy steel fabrication • How large steel hull plates and structural members are typically joined in modern shipyards • Differences between fusion welding and brazing/soldering

💭 Think About

• Which method is most practical and efficient for joining thick steel plates on a large scale in a shipyard environment? • Which processes are more specialized or used for repairs vs. routine hull construction? • Think about which option is standard in modern steel ship construction, not small repairs or precision work.

✅ Before You Answer

• Identify which option is most widely used in heavy structural steel work worldwide • Eliminate options that are mainly used for localized repairs, rail joints, or non-structural joining • Confirm which method actually melts the base metal together (fusion) rather than using filler at lower temperatures.