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2. List of welding codes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_codes

   Specification for carbon steel electrodes for shielded metal arc welding AWS A5.18: Specification for carbon steel electrodes and rods for gas shielded arc welding AWS B1.10: Guide for the nondestructive examination of welds AWS B2.1: Specification for Welding Procedure and Performance Qualification AWS D1.1: Structural welding (steel) AWS D1.2

3. Welding Procedure Specification - Wikipedia

   en.wikipedia.org/.../Welding_Procedure_Specification

   The AWS defines welding PQR as a record of welding variables used to produce an acceptable test weldment and the results of tests conducted on the weldment to qualify a Welding Procedure Specification. For steel construction (civil engineering structures) AWS D1.1 is a widely used standard.

4. Symbols and conventions used in welding documentation

   en.wikipedia.org/wiki/Symbols_and_conventions...

   The location of the elements of a welding symbol when following US conventions. In the US, the component elements of the weld specification are: [2] The reference line - the body of the arrow which is the baseline for the specification. The arrow tip which goes at an angle to the reference line, pointing to the joint to be welded.

5. Welding - Wikipedia

   en.wikipedia.org/wiki/Welding

   For DC welding, the electrode can be connected to the machine's positive terminal (DCEP) or negative terminal (DCEN), changing the current's direction. The process and type of electrode used will typically determine the current. [44] [45] Shielding gas prevents oxygen in the atmosphere from entering the molten weld pool.

6. Weld quality assurance - Wikipedia

   en.wikipedia.org/wiki/Weld_quality_assurance

   Methods of weld testing and analysis are used to assure the quality and correctness of the weld after it is completed. This term generally refers to testing and analysis focused on the quality and strength of the weld but may refer to technological actions to check for the presence, position, and extent of welds.

7. Arc welding - Wikipedia

   en.wikipedia.org/wiki/Arc_welding

   Gas tungsten arc welding (GTAW), or tungsten/inert-gas (TIG) welding, is a manual welding process that uses a non-consumable electrode made of tungsten, an inert or semi-inert gas mixture, and a separate filler material. Especially useful for welding thin materials, this method is characterized by a stable arc and high quality welds, but it ...