Is it necessary to conduct a weld assessment for non-corrosion-resistant surfacing layers, such as strength surfacing layers? And if so, which standards should be followed?

Welding evaluation is also required for non-corrosion-resistant surfacing. Welding qualification is conducted to verify the quality of the welding process and welded joints, and to ensure that they meet the design requirements. For hardfacing, it can usually be evaluated in accordance with ** or industry standards. The specific standard to choose depends on the regulations in the region and industry requirements. For example, in China, reference can be made to the standard **\"Rules for Welding Procedure Qualification of Metal Materials\" (GB/T 2651-2008) or relevant industry standards. In other ** or regions, there may be similar ** or industry standards for reference. When conducting welding qualification, it is necessary to select appropriate standards for evaluation based on factors such as welding materials, welding methods, and required strength. .

NB/T 47014-2011 Page 55

Sometimes such situations arise, such as the butt joint transition with varying thicknesses, or the butt joint transition between a skirt and a head. It’s all evaluated through docking; waiting for an expert’s reply. . . :lol

Pressure equipment, such as boilers, pressure vessels (other than gas cylinders), and industrial pipelines, are required to be evaluated in accordance with NB/T47014-2011; however, the assessment criteria for surfacing welding specified in 47014 apply to corrosion-resistant surfacing, and it is not clear how to evaluate strength-enhancing surfacing.