To view sample prequalified procedures, click on any of the following:
About arc welding process:
SMAW, GMAW, GTAW, FCAW and SAW welding process are the major arc welding processes:
-Shielded Metal Arc Welding (SMAW) or Stick welding;
electrode is being used for SMAW welding process
-Flux Cored Arc Welding (FCAW);
gas-shielded flux cored wire (FCAW-G) or self-shielded flux cored wire (FCAW-S) is being used for FCAW welding process
-Submerged Arc Welding (SAW);
solid wire is being used for SAW welding process
-Gas Metal Arc Welding (GMAW) or MIG welding;
either solid wire or metal cored wire is being used for MIG welding process
-Gas Tungsten Arc Welding (GTAW) or TIG welding;
rod or solid wire is being used for TIG welding process
Mode of process application for all the major arc welding process:
(a) Manual welding:
Welding wherein the entire welding operation is performed and controlled by hand.
(b) Semi-automatic welding:
Welding with equipment that supplies continuous wire feed with or without means for mechanical travel. Manual manipulation by the welder of one or more of the variables of speed of travel, guidance, and direction of wire is involved during the welding operation.
(c) Mechanized (Machine) welding (W-ME):
Welding with equipment that performs the welding operation under the constant observation and control of a welding operator.
The torch, gun, wire guide assembly, or electrode holder is held by a mechanical device.
(d) Automatic welding:
Welding with equipment that performs the welding operation without adjustment of the controls by welding operator.
About prequalified Welding Procedure Specification (pWPS):
Prequalified welding procedure specification includes a weld joint specified in a governing code that does not require validation of welding parameters through the performance of a procedure qualification test. So, a prequalified WPS does not need a supporting Procedure Qualification test Record (PQR).
Governing codes that designate prequalified weld joints are AWS D1.1, AWS D1.3, AWS D1.6
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