NF EN ISO 15614-13, A89-057-13 (11/2023)

This document specifies how a preliminary welding procedure specification (DMOS-P) is qualified by welding procedure qualification tests. This document defines the conditions for carrying out welding procedure qualification tests and the range of validity of welding procedures for all welding operations falling within the qualification of this document. Two classes of welding procedure qualification tests are offered to enable application to a wide range of welded fabrications. They are designated by classes A and B. The scope of the tests is greater in class A, and the areas of validity are more restrictive than in class B. The procedure qualification tests carried out according to class A qualify automatically meets the requirements of class B, but not vice versa. If no class is specified in a contract or application standard, all Class A requirements apply. NOTE According to ISO 15614-1, class B corresponds to level 1, and class A corresponds to level 2. This document applies to pure resistance butt welding and flash welding of any metallic material, under all product shapes (e.g. straight solid or tubular, flat or circular sections). It covers the following resistance welding processes as defined in ISO 4063:2023: — 24 – direct current or alternating current flash welding with various motion sequences, continuous flash and intermittent flash; — 25 – butt welding by pure resistance, direct current or alternating current with various current and force sequences.
(Automatic translation from French)