AWS Certified Welding Inspector (CWI) exam topics — the 3 content areas by weight
The AWS Certified Welding Inspector (CWI) exam is built from 3 weighted content areas. Focus your time where the weight is. Each area below links to a free study chapter and practice questions. Weights reflect the official content outline.
Part A: Fundamentals
40%processes, metallurgy, weld symbols, NDT, safety
Part B: Practical
30%hands-on visual inspection, gauges, acceptance criteria
Part C: Code Book Application
30%open-book code navigation, WPS/PQR
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Content-area weights reflect the official AWS Certified Welding Inspector (CWI) content outline. Confirm current details with American Welding Society — CWI. Study aid, not a substitute for the official material. Last updated: August 2026.