What must be done to verify welding materials according to the requirements?

The requirement to verify welding materials according to the standards outlined in D1.1 emphasizes the importance of using materials that conform to specific industry standards for structural welding. By using only materials that meet the D1.1 specifications, welders ensure that the materials possess the right mechanical properties, chemical composition, and other required characteristics that will ensure safety, integrity, and compatibility with the welding process.

The standards set by D1.1 specify the criteria that materials must meet for successful welding and ensure performance during service conditions. Adopting materials that do not conform to these requirements could lead to poor weld quality, structural failures, or safety hazards.

Choosing options like substituting any available materials or solely relying on supplier certifications can compromise the integrity of the welding process. It is critical that all materials used are explicitly certified to D1.1 specifications to maintain compliance and assurance that the welding task will meet project requirements and safety standards.

Conducting independent testing can be a prudent measure, but it is not a requirement for verifying materials if those materials already conform to the established specifications. Therefore, sticking to using materials that are specifically certified to D1.1 is the most reliable method to ensure that all welding activities adhere to the necessary standards.