Self Study


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Self Study  API 510, API 570, AWS-CWI


Self Study Available

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Prices are cash/check. (Other payment options available)

Self Study Guides 
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Self Study Guides ($545 each)
API 510
API 570
API 653
AWS CWI

Shipping cost - calculated by zip code

API 510, API 570, and AWS-CWI Self Study
We offer the API 510, 570, 653, and AWS-CWI as self study, for the more disciplined individuals desiring to take the tests.
The Self Study is designed for individuals who are self-disciplined enough to study on their own and do not necessarily need the lectures associated with the material.
API trainees receive the textbook, Code Book tabs, quizzes over each document and three Mock Exams.
Individuals pursuing the CWI certification receive the text book, tabs for API 1104, quizzes over each lesson , one 224 question Mock Exam over the fundamentals and three Mock Exams over API 1104 and Part B.


Self Study

· Quiz over each Lesson


· Tabs for your Code Books
· Exercises over each API document
· Exercises over the ASME documents
· Three Mock Exams (CWI has one exam)
· Express mail once payment is received



To Register, or Order Books

Complete online registration form, (option - email or mail registration form) and mail check or money order to:
DTM Enterprises, 2603 Dupont Pasadena, TX 77503
Phone: 281-330-9542
Email: David@dtm-enterprises.org
PayPal payment option available.
Please read our Payment and Refund Policy
Students are responsible for obtaining their own Code books.
API now using electronic testing & code books


Full Class Schedule (pdf)


DTM Enterprises - Training Inspectors since 1995