Welding Symbols VT
Service Induce Discontinuities
In welding and nondestructive examination (NDE), VT stands for Visual Testing (or Visual Examination). On a welding symbol chart, VT is typically placed in the tail of the symbol to indicate that a visual inspection is required for that specific joint.
VT in Welding Symbols
The letter designation VT is a part of the standard nondestructive examination symbols defined by the American Welding Society (AWS):
- Location: It appears in the tail of the welding symbol. If no tail is present, the requirement may be listed in general drawing notes.
- Purpose: It specifies that the weld must be inspected visually to ensure it meets requirements for size, length, and surface quality (e.g., lack of porosity or undercut).
- Other NDE Symbols: Similar to VT, you may see other designations like RT (Radiographic), UT (Ultrasonic), MT (Magnetic Particle), or PT (Penetrant Testing).
Basic Welding Symbol Elements
Every welding symbol consists of several key parts that work together to provide complete instructions:
| Element | Purpose |
|---|---|
| Reference Line | The horizontal line that acts as the anchor for all other symbols. |
| Arrow | Points to the specific joint or location where the weld or test is required. |
| Weld Symbol | A small icon (like a triangle for a fillet weld) indicating the weld type. |
| Tail | Used for supplementary information, such as the inspection method (VT) or process (GMAW, SMAW) |
In welding and nondestructive examination (NDE), VT stands for Visual Testing (or Visual Examination). On a welding symbol chart, VT is typically placed in the tail of the symbol to indicate that a visual inspection is required for that specific joint.
VT in Welding Symbols
The letter designation VT is a part of the standard nondestructive examination symbols defined by the American Welding Society (AWS):
- Location: It appears in the tail of the welding symbol. If no tail is present, the requirement may be listed in general drawing notes.
- Purpose: It specifies that the weld must be inspected visually to ensure it meets requirements for size, length, and surface quality (e.g., lack of porosity or undercut).
- Other NDE Symbols: Similar to VT, you may see other designations like RT (Radiographic), UT (Ultrasonic), MT (Magnetic Particle), or PT (Penetrant Testing).
Basic Welding Symbol Elements
Every welding symbol consists of several key parts that work together to provide complete instructions:
| Element | Purpose |
|---|---|
| Reference Line | The horizontal line that acts as the anchor for all other symbols. |
| Arrow | Points to the specific joint or location where the weld or test is required. |
| Weld Symbol | A small icon (like a triangle for a fillet weld) indicating the weld type. |
| Tail | Used for supplementary information, such as the inspection method (VT) or process (GMAW, SMAW) |
Rating
0
0
There are no comments for now.
Join this Course
to be the first to leave a comment.
1.
1. Where is the abbreviation "VT" (Visual Testing) typically located on a welding symbol?
2.
2. If the "VT" designation appears on a reference line with no weld symbol, what does it mean?
3.
3. What does a "VT 10" callout in the tail specifically indicate?
4.
4. When "VT" is placed ABOVE the reference line, which side of the joint must be visually inspected?
5.
5. Which of these combinations indicates that a weld requires both Visual Testing and Magnetic Particle Testing?