Which welding method is commonly referenced in API 1104?

The commonly referenced welding method in API 1104 is Shielded Metal Arc Welding (SMAW). This method is particularly valued in pipeline welding due to its versatility and effectiveness in creating strong, durable welds in a variety of positions and conditions. SMAW uses a consumable electrode coated with flux to protect the weld area from contamination, which is crucial in pipeline applications where environmental factors can affect the quality of the weld. The process is also relatively portable, making it suitable for field work where pipeline installations often occur.

In API 1104, the standard emphasizes the importance of quality control and the mechanical properties of the weld, which aligns well with the attributes of Shielded Metal Arc Welding. The welds produced from this method can withstand the stress and conditions that pipelines typically encounter, such as pressure and corrosion.

The other welding methods mentioned may have specific applications but are not as prominently endorsed within the context of API 1104 when it comes to pipeline welding. While MIG and TIG welding are known for their precision in other industries, their focus is not as aligned with the practical aspects of pipeline welding in this specific standard. Submerged arc welding is used more for larger welds in controlled environments, which may not apply to the typical conditions outlined in