TS 11429

TS 11429 is a terminology and classification standard for defects in metallic welded joints made by pressure welding. Its focus is the identification of the type, shape and position of defects in such joints; it does not deal with the causes of occurrence, service loading, or metallurgical changes.

What this terminology covers in pressure welded joints

The standard is concerned with how defects are described rather than how they are generated. In general technical terms, pressure welding belongs to the family of joining processes in which materials are united by the application of pressure, with heat sometimes present depending on the process. Because these joints are evaluated differently from fusion welds, a common vocabulary is important for distinguishing visible or locatable discontinuities in a consistent way across inspection and documentation.

Why classification and designation matter

A clear classification helps separate defects that may look similar but are treated differently in technical communication. Short designation supports concise notation in drawings, reports and inspection records, while terms and definitions create a shared language for quality control, education and non-destructive examination practice. In this standard, the emphasis remains on the defect as a descriptive feature of the joint, not on assigning causes or interpreting metallurgical effects.