Fittings supplied with a 30° bevel should be welded with what recommended bevel?

When welding fittings that are supplied with a 30° bevel, the recommended bevel angle to match effectively during the welding process is 37.5°. This angle is designed to facilitate proper penetration and fusion between the two pieces being welded while allowing for the inherent variances associated with welding.

Using a 37.5° bevel helps in achieving a more effective weld by ensuring that the gap between the welded components is optimal for the welding process. This also helps in minimizing the possibility of defects and ensures that the weld flows properly into the bevel area, creating a strong bond.

Other bevel angles such as 30°, 45°, and 60° do not align with the industry practices and standards for optimal welding of pieces that have a 30° bevel. These angles could lead to challenges in maintaining the integrity of the weld or may necessitate additional adjustments or corrective measures during the welding process, which can compromise the overall effectiveness of the weld.