How Part B of the AWS CWI exam works: 46 questions in 120 minutes, the materials and tools you get, how the Book of Specifications is laid out, worked decisions and the traps that cost marks.

CWI Part B Practical Exam 2026: Book of Specifications and Worked Questions

How the AWS Certified Welding Inspector exam works: each part's questions and time, the 72% pass mark, what AWS says on pass rates, retakes, fees and a practice question.

CWI Exam 2026: Parts A, B and C, the 72% Pass Mark and the Pass Rate

The Certified Welding Inspector (CWI) credential is awarded by the American Welding Society (AWS). Candidates must meet the education, work-experience and vision requirements AWS sets and pass three examination parts. Part B (Practical) is taken first: a paper-based, open-book exam at AWS test sites in which candidates use the Part B Book of Specifications, an exhibits booklet, plastic weld replicas and inspection tools. Part A (Fundamentals) is a closed-book, computer-based test at Prometric test centers on welding fundamentals such as welding processes, terminology, welding and NDE symbols, weld examination, nondestructive and destructive testing, metallurgy and welding-related calculations. Part C (Code Book) is an open-book, computer-based test of the ability to find and apply the requirements of the code the candidate chose, such as AWS D1.1 for structural steel or API 1104 for pipelines. A candidate needs at least 72 percent on each part and a composite average of at least 72 percent. The certification lasts nine years, with renewals due at years three and six.

AWS Certified Welding Inspector (CWI)

CWI Part A practice: 100 questions, two timed mocks

CWI Part A practice test: 100 original Fundamentals questions as two timed 50-question mocks at about the real Part A pace, a score by content area, every answer explained. 3 questions free.

Practice for Part A (Fundamentals) of the American Welding Society's Certified Welding Inspector exam: 100 original questions across all eleven Part A content areas, as two timed 50-question mocks at about the pace of the real Part A, with every answer explained. Independent practice material.

CWI Part A Fundamentals Practice Bank

US, UK & international professional

CWI Part B practice: 92 questions, two 46-question mocks

CWI Part B Practice Test

AWS Certified Welding Inspector (CWI) — Mock tests

Two timed Part A mocks across all eleven content areas, every answer explained