What is ASME IX and ISO 9606 and how does it apply to welding?

American Society of Mechanical Engineers (ASME) IX also referred to as ASME section 9  is the qualification for welders for pressure pipe and vessels. It covers both brazing and welding and it is pretty much the industry standard for testing of pipe welders for power plants and such.

ISO 9606-1:2017 specifies the requirements for qualification testing of welders for fusion welding of steels. It provides a set of technical rules for a systematic qualification test of the welder, and enables such qualifications to be uniformly accepted independently of the type of product, location and examiner or examining body.

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