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Welding Symbols and Definitions:



Basic Welding Symbols

Welding Symbol Name Welding Defintion Symbol
BEAD A type of weld created by one or more string or weave beads deposited on an unbroken plane welding symbol
FILLET Type of weld, approximately triangular cross section joining two surfaces at approximately exact angles to each other. welding symbol
PLUG A circular fusion weld through in the hole of a slotted lap or tee joint. welding symbol
SQUARE A type of groove weld with a small separation at the edges of the base metal parts. welding symbol
V-Groove A groove weld in which the joint edge of each member is beveled from the similar side. welding symbol
BEVEL A type of groove weld in which one member has a joint edge beveled from one side welding symbol
U Groove A groove weld in which the joint edge of both members is equipped in the form of a J from one side, giving a final U form to the fulfilled weld. welding symbols
J Groove A type of groove weld in which one member has a joint edge in the form of a J from one part. welding symbols
FLARE V A type of groove weld, generally used to join two round or curved parts. welding symbols
FLARE BEVEL A type of groove weld, generally used to join a round or curved piece to a level piece. welding symbols
SEAM A type of welding, continuous weld made between or upon overlapping metal parts. welding symbols
Back A type of weld deposited at the back of a single groove weld welding symbols
Surfacing A type of weld which consists of one or more stringer beads or weave beads deposited on an steady surface in order to create desired dimensions or properties.. welding symbols
Edge A weld that is improperly positioned compared to current workpiece design. Edge welds are those welds that stroke or extend beyond the edge of the workpiece. welding symbols
Cornor A type of joint between two metal parts located at exact angles to one another. It requires large amounts of weld metal. welding symbols

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Supplementary Welding Symbols

Welding Symbol Name Definition Symbol
Weld All Around - welding symbols
Field Weld A type of weld made at the construction site. welding symbols
Melt-thru - welding symbols
Backing or Special Material A type of weld bead applied to the root of a single groove joint to declare complete root diffusion. welding symbols
Flush - welding symbols
Convex - welding symbols
Concave A type of fillet weld having a concave surface. welding symbols

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Elements of Welding Symbols


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Welding Processes and Letter Designations


The AWS definition for a welding process is "a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone and with or without the use of filler material".


This table shows the letter designation for each welding process. The letter designation assigned to the welding process can be used for identification on drawings, tables, etc.


Welding Group Welding Process Letter Designation
Arc welding
Carbon Arc Welding CAW
Gas Metal Arc Welding GMAW
Gas Tungsten Arc Welding GTAW
Plasma Arc Welding PAW
Shielded Metal Arc Welding SMAW
Stud Arc Welding SW
Submerged Arc Welding SAW
Brazing
Diffusion Brazing DFB
Dip Brazing DB
Furnace Brazing FB
Induction Brazing IB
Infrared Brazing IRB
Resistance Brazing RB
Torch Brazing TB
Resistance Welding
Flash Welding FW
High Frequency Resistance
HFRW
Percussion Welding
PEW
Projection Welding
RPW
Resistance-Seam Welding
RSEW
Resistance-Spot Welding
Upset Welding
UW
Solid State Welding Cold Welding CW
Diffusion Welding DFW
Explosion Welding EXW
Forge Welding FOW
Friction Welding FRW
Hot Pressure Welding HPW
Roll Welding ROW
Ultrasonic Welding USW
Ultrasonic Welding USW
Oxyfuel Gas Welding Oxyacetylene Welding OAW
Oxyhydrogen Welding OHW
Pressure Gas Welding PGW
Soldering Dip Soldering DS
Furnace Soldering FS
Induction Soldering IS
Infrared Soldering IRS
Iron Soldering INS
Resistance Soldering RS
Torch Soldering TS
Wave Soldering WS
Other Welding Processes Electron Beam EBW
Electroslag ESW
Induction IW
Laser Beam LBW
Thermit TW

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Welding is an industrial process, which involves a lot of technical details, instructions and symbols.

The welding symbols reveal a lot of detail and acts as form of shorthand for welders. The welding symbols correspond to the type of welding, the size, details about the weld, processing information, details about the joint, number of welds and finishing information. Usually these welding symbols are in blueprints and drawings, to make the details more exposed and understandable to the welders.

EVERLAST has a collection of the most commonly used welding symbols. These symbols are in four categories: basic welding symbols, supplementary welding symbols, elements of welding symbols and welding processes/letter designations.

The basic welding symbols consist of a table with three columns about welding symbol name, welding definition and symbol. The supplementary welding symbols category also consists of a table in the similar format. Both of the tables have an explanation for each symbol name with the corresponding pictorial representations.

The elements of welding symbols have an image containing detailed explanation. The final categorization welding processes and letter designation are in a tabl,e where each welding process is under a welding group with a corresponding letter designation.

Browse through the symbols, either by clicking on the links at the top of the page, which will take you to the corresponding category. Or scroll the page to view the details. You can go back to the top of the page just by clicking on the text at the top instead of scrolling.


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