Which of the following is NOT typically part of the welding process described in API 1104?

The welding process as outlined in API 1104 primarily focuses on the actual joining of materials through welding techniques, which includes several important steps. Among these, the preparation of welding surfaces, welding procedure qualification, and post-weld heat treatment are critical elements of ensuring a proper weld.

Preparation of welding surfaces is essential as it ensures that the metal components to be welded are clean and fit together properly. This step directly impacts the quality of the weld by reducing impurities and improving the joint configuration.

Welding procedure qualification is a key component that involves testing and validating the welding process to ensure it meets specific standards and can produce welds of acceptable quality. This is vital for maintaining safety and structural integrity in pipeline construction.

Post-weld heat treatment involves heating the welded joint after the welding process to relieve stresses that may have developed during welding. This step is important for preventing issues such as cracking or brittleness, ensuring the longevity and performance of the weld.

In contrast, painting or coating the joints, while it may be part of the overall pipeline construction and maintenance process, does not directly contribute to the welding process itself. It is an additional step taken after welding to protect the joints from corrosion and environmental damage, rather than a fundamental aspect of the welding operation as described