11 Process and Method

Type

Process

Designation

Arc Welding

Shielded Metal Arc Welding

SMAW

Gas Tungsten Arc Welding

GTAW

Gas Metal Arc Welding

GMAW

Gas Metal Arc Welding Pulsed

GMAW-P

Flux Cored Arc Welding Gas Shielded

FCAW-G

Flux Cored Arc Welding Self Shielded

FCAW-S

Submerged Arc Welding

SAW

Plasma Arc Welding

PAW

Electro slag Welding

ESW

Electro gas Welding

EGW

Gas Welding

Oxyacetylene Welding

OAW

Brazing

Torch Brazing

TB

Furnace Brazing

FB

Induction Brazing

IB

Cutting

Oxyacetylene Cutting

OFC-A

Air Carbon Arc Cutting

CAC-A

Plasma Arc Cutting

PAC

Arc Cutting

AC

Gas Metal Arc Cutting

GMAC

Oxygen Cutting

OC

Gas Tungsten Arc Cutting

GTAC

There are a lot of processes in the welding industry, in order to streamline the call out of these there are letter designations for them. This designation is a letter callout and it commonly follows the first letter of the process name. For example Flux Cored Arc Welding is FCAW.

When a process is specified it will be located in the tail of the welding symbol. This can be added to several other components on the welding symbol.

image

Method

The method by which the weld is applied may also be listed in the welding symbol. This will often be seen after a process with a hyphen. There are four different methods of applying a weld and the designation is the first two letters from the first word for the first three. Number Four comes from the first two letters of the hyphenated words. These methods vary depending on process and may not be applicable to all welding processes.

Automatic WeldingAU

Manual WeldingMA

Mechanized WeldingME

Semi-Automatic WeldingSA

image

The above image shows a Gas Tungsten Arc Weld process using a Manual method.

Also included in the tail could be a reference to a drawing number, a welding procedure (commonly called out as WP,) filler material, or any other pertinent information that may need to be communicated to the welder or fitter.

Examples of this information:

Drawing Number 5DWG5

Welding Procedure 6WP-6

Gas Tungsten Arc Welding – Manual ER70-s FillerGTAW-MA

ER70-s

License

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Interpretation of Metal Fab Drawings Copyright © 2017 by Cameren Moran is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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