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WELD-112A - Intro to Gas Tung Arc Welding - Andres Carrillo

Course: Intro to Gas Tung Arc Welding
Professor:Andres Carrillo
  • OnlineLive
  • InPerson
Course Length:
  • 16 Week


Hello and welcome to the first class of three (112A) for Gas Tungsten Arc Welding (GTAW). My name is Andres Carrillo and I will be your professor for this course. This class is a hybrid and we will meet physically in the GTAW welding lab on campus after online lectures Thursday mornings. Prior to the lab there is a gap after lecture to give people time to commute. 

Course Description

The first of a three-part series including the fundamental theory and application of gas tungsten arc welding (GTAW). Emphasizes safety procedures, use of GTAW equipment, and proper techniques in accordance with the American Welding Society SENSE Entry-Level welder program.

What to Expect in this Course

Each week we will have homework assignments that will be performed online either in Canvas or AWS Sense. We will also have lectures performed via Zoom. You will need Zoom installed on your device for the lecture. In addition to Zoom I would like everyone to at least have a microphone to be able to communicate with me in the Zoom meetings, a camera would be nice but is optional. The course will be provided via Canvas and if you need information on Canvas please look at this link from COC

In addition to the lecture you will be assigned welding projects which will be completed in the welding lab at the Valencia campus, Towsley Hall Room 122, which is located just on the far end of the main welding lab which you enter in room TWSH-120. 

Types of Assessments

Physical lab projects, online exams and quizzes.

Textbook Information / Link to ZTC Textbook

Gas Tungsten Arc Welding Handbook, 7th Edition.

ISBN 978-1-64564-137-7

Other Relevant Course Information

Required Weld Tec TIG Torch Components for Size 9 or 20 torch

ty Description  Size  Part Number 
2 Collet 1/16" 13N22
2 Collet 3/32" 13N23
2 Collet Body 1/16" 13N27
2 Collet Body 3/32" 13N28
1 Gas Lens 1/16" 45V43
1 Gas Lens 3/32" 45V44
1 Back Cap Short 41V33
1 Back Cap Medium  41V35
1 Back Cap Long 41V24
1 Alumina Nozzle (std) #5 13N09
1 Alumina Nozzle (std) #6 13N10
1 Gas Lens Nozzle (std) #5 53N59
1 Gas Lens Nozzle (std) #6 53N60
1 *Tungsten Electrode  EWTH-2 (3-pack) 1/16" TET1167-3
1 *Tungsten Electrode  EWTH-2 (3-pack) 3/32" TET3327-3
  * may use EWLa-2  (2% Lanthanated) as alternative     

Personal Protection Equipment 

2 GTAW Gloves (leather preferred)    
1 Arc Welding Helmet  (auto darkening type preferred)    
3 Extra Clear Lens for welding helmet    
1 Clear Safety glasses (ANSI 78.1 rated)    
1 Long sleeve welding Jacket (can be fire retardant treated cotton)    
1 Leather work boots (does NOT need to be steel toe)

First Aid Kit with burn cream

3 Stainless steel wire brush (toothbrush size)    
2 VISE-GRIP 6 in. C-Clamp Locking Pliers (or equivalent)    
1 VISE-GRIP 6 in. Groove lock V-Jaw Pliers (or equivalent)    
3 Permanent markers (Black Sharpie)    
1 6-in Mill Bastard File with wooden handle    
1 Diagonal pliers    
1 Slip nose pliers

Additional Resources


This course can be accessed on the first day of class via Canvas at Log into Canvas using your CanyonsID single sign-on:

  • CanyonsID Username is your COC student email address (Ex:
  • CanyonsID Password is your COC student email password

Please visit the Get to Know Your Online Classroom page for help logging into Canvas and for tips on using Canvas and Zoom. Canvas Chat Support is also available 24/7 for any Canvas related issues.

Online Education

Check out the Online Education website for more information on a variety of topics that can help you be a successful online student such as: exam proctoring, learning styles, computer skills, and tips for student success. If this is your first online course, feel free to take our online learning readiness assessment to assess your skills.

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Last updated: 08/18/2021 Sub#: 539