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Understanding Welding Symbols
Rating: 4.5 out of 5(739 ratings)
2,331 students

Understanding Welding Symbols

How to Create and Interpret the Graphical Symbols Used to Define a Welded Joint
Last updated 5/2026
English

What you'll learn

  • An Overview of the Major Welding Processes including FCAW, SAW, SMAW, GTAW and GMAW
  • A Detailed Explanation of Joint Types and Terminology
  • Parts of a Welding Symbol: Reference Lines, Arrows and Tails
  • Groove Weld Terminology including Groove Shapes and their Associated Symbols
  • A Deep Dive into Fillet Welds -- Their Applications and Symbols
  • An Overview of Plug, Slot and Stud Welds
  • Nondestructive Testing Types and How to Depict Those Tests on an Engineering Drawing
  • Supplementary Information and Symbols
  • And MUCH MORE!!

Course content

4 sections29 lectures3h 11m total length
  • Introduction to the Course6:37

    Explore welding symbols with an overview of major welding processes and how to interpret arrows, lines, and tails for groove, fill, plug, and slot welds, including non-destructive testing basics.

  • Overview of Shielded Metal Arc Welding (SMAW)10:10

    Explore shielded metal arc welding (SMAW) basics, including flux and shielding gas to keep oxygen and nitrogen out of the weld puddle, plus base metal versus weld metal.

  • Overview of Welding Processes - SMAW
  • Overview of Gas Metal Arc Welding (GMAW)7:12
  • GMAW – “Mig” Welding
  • Overview of Flux Core Arc Welding (FCAW) and Submerged Arc Welding (SAW)10:51
  • Overview of FCAW
  • Submerged Arc Welding – “Sub Arc”
  • Overview of Gas Tungsten Arc Welding (GTAW)7:12
  • Gas Tungsten Arc Welding Overview Quiz.

Requirements

  • A basic understanding of manufacturing
  • A basic understanding of engineering drawings

Description

Welding symbols are the graphical tools, placed on engineering drawings and specifications, that product engineers and designers use to communicate the intent of their design to the people who are making and inspecting the products. Details like the type, shape, length, thickness, and location of the weld are all communicated through these welding symbols.

And like all symbols, without an understanding of how they work, they're meaningless. But in this course, "Understanding Welding Symbols", we show you how to read and interpret these symbols.

Metallurgist and Licensed Professional Engineer, Garry Pace is the instructor for this course. Over the past 20+ years, Garry has taught thousands of welders, weld inspectors, quality engineers, quality technicians, and other manufacturing professionals the fundamentals of welding, along with its procedures and specifications.

In this course, you will learn:

  • An overview of the major welding processes like GTAW, GMAW, SMAW, SAW and FCAW

  • All the major weld joint types

  • Welding symbols ... what they mean and why they're important

  • All the terminology and concepts needed to master welding symbols

  • How groove and fillet welds are specified and dimensioned

  • How plug, slot, and stud welds are specified and dimensioned

  • Supplementary information and symbols

  • An overview of nondestructive testing methods like ultrasonic, liquid penetrant, x-ray, and magnetic particle inspection

  • How required NDT methods are specified on blueprints

  • Overviews on weld pass types, weld penetration, joint and edge preparation, and pre- and post-heat treating.

Plus 14 downloadable resources including:

  • Introductory Guide to SMAW

  • SMAW Process Study Guide

  • Introductory Guide to GMAW

  • GMAW Process Study Guide

  • GTAW Process Study Guide

  • Welding Symbol Chart

  • Weld Joint Types – Quick Study Guide

  • Basic Elements of a Welding Symbol

  • Key Parts of a Welding Symbol

  • Reference Line and Arrow Study Guide

  • Fillet Weld Symbols and Dimensions

  • Groove Welds - Study guide

  • Plug, Slot and Stud Weld Symbols - Study guide.

  • NDE Introduction

We've included in this course far more than just the dry theory. We've included real-life examples and practical applications that can only be learned through years of hands-on experience.


Read what have past students said about Understanding Welding Symbols:

"Very comprehensive but digestible for a beginner - the repetition of key concepts throughout helped drill them down properly." - Thomas M.

"I really enjoyed this course, it is both funny and informative. Great job!" - Filip M.

"Good overview and reference course on welding symbols." - Rober U.

"I have learned more and got many new ideas to apply welding in mfg, drawings. Thanks." - Ramesh M.

So if you're looking to take your welding and metal working skills to the next level by incorporating the more technical aspects of your profession, then this is the class for you.

Sign up today to advance your skillset and advance career in manufacturing!!

Who this course is for:

  • Welders and Welding Inspectors
  • Welding Engineers
  • Manufacturing Professionals
  • Production Supervisors
  • Manufacturing and Industrial Engineers
  • Quality Engineers, Quality Technicians
  • Product Designers