CWI Exam Prep: Weld Inspector

Prepare for the AWS Certified Welding Inspector (CWI) exam at an inspection bench. Measure drawn welds with a virtual gauge, accept or reject them against a job card, name the discontinuity, and drill every part of the exam: Part A fundamentals, Part B practical, and Part C codebook.

INSPECTION BENCH
Each case is a weld drawn to scale: a fillet, a groove cross section, a fit-up, or a top view. Drive the gauge onto the weld and lock a reading, apply the job card and call it, then name what you found. The report grades all three decisions and shows the true reading on the drawing. Ten categories: fillet leg size, effective throat, convexity, undercut, reinforcement and underfill, hi-lo mismatch, root and penetration, cracks and overlap, surface porosity, and fit-up. Limits on each card are givens for practice, not quotations from any code, so you learn the method and keep the real numbers with your codebook.

BENCH CALCULATORS (FREE)
Fillet throat for equal, unequal and concave fillets, weld metal area, tensile strength, elongation and reduction of area, heat input in J/in. and kJ/mm, temperature conversion, a preheat check against a stated minimum, and the IIW carbon equivalent. The working is shown for each.

YOUR BENCH
The home screen shows what is on the bench today: continue a scored practice set, shore up your weakest area, work today's weld case, re-work missed questions, or flip a stack of flashcards. A dial per exam area tracks your accuracy, and a gauge counts down to your exam date.

STUDY EVERY PART
• Scored ten-question practice sets with a result for each area and review of misses
• Scenario-based multiple choice, true/false, flashcards and term matching
• A searchable glossary of welding, inspection and NDE terms
• Formulas and key values: throat, heat input, carbon equivalent, electrode classification, positions, fraction and metric conversions and more
• The AWS exam outline for Parts A, B and C with the published minimum weights and links to the official guides

Content covers welding fundamentals and terminology, processes and cutting, welding and NDE symbols, metallurgy and heat control, discontinuities and weld examination, NDE and destructive testing, inspector duties, safety and fabrication math, and the Part B practical and Part C codebook skills: gauge selection, reading to the stated precision, loading class before the table, and finding answers in a code quickly.

FREE AND PREMIUM
A full scored practice set, the first weld case in every category, a sample of every study mode and all of the Bench Calculators are free. Premium unlocks the full library with a subscription or a one-time lifetime purchase. Study content works offline with no account and no sign-up; purchases, restore and the official links need a connection.

Official sources (linked in the app): the AWS CWI program page, Examination User Guide, and Part A, B and C exam information at aws.org, the Part B Book of Specifications, and OSHA's welding, cutting and brazing page.

This app is an independent study aid and is not affiliated with, endorsed by, or sponsored by the American Welding Society (AWS), Prometric, or any government agency. AWS and CWI are marks of the American Welding Society; all other trademarks are the property of their respective owners. This is not a government app and does not provide any government service. It provides exam study material only, not engineering, inspection, or code-compliance advice. Exam content and policies change; confirm current requirements with the official sources above.

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