In the 2012 Cost Engineer Examination, the question on "Technology and Measurement (Installation)" includes a key topic regarding the installation and selection of industrial pipelines, stationary equipment, and process metal structures. Question No. 85 asks: "Which welding method should be used for thin-walled stainless steel pipes?" The options are:
A. Arc welding
B. Submerged arc welding
C. Tungsten inert gas (TIG) welding
D. Argon welding
**Answer: C**
According to the analysis by the engineering education network's expert teachers, this question relates to textbook page 298. It explains that stainless steel pipe welding can be done using manual arc welding or argon arc welding. However, for thin-walled pipes, it is essential to ensure a smooth and clean inner weld surface. Therefore, full tungsten inert gas (TIG) welding is recommended for thin-walled stainless steel pipes. When the wall thickness exceeds 3 mm, argon arc welding may be used instead.
This distinction is crucial in construction and engineering projects where the quality of the weld directly affects the performance and safety of the pipeline system. Understanding the appropriate welding technique based on material thickness and application is a fundamental skill for cost engineers and construction professionals.
By choosing the correct welding method, engineers can optimize both the structural integrity and cost-effectiveness of the project. This question tests not only knowledge of welding techniques but also the ability to apply that knowledge in real-world scenarios.
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