API
API 577
Welding Processes, Inspection, and Metallurgy
The welding inspection reference: process characteristics, weld discontinuities and their causes, metallurgical effects of welding, and how welds are examined and evaluated.
This is an explanation, not the standard. PipingInspector is not affiliated with API and reproduces no part of the document. Always work to the current edition of the standard itself and to your project specification.
Where it is applied on this site
- Reading a WPS and a PQR — what is on the sheet and what the tests provedPiping
- Section IX essential variables — what invalidates a procedure qualificationPiping
- Welder qualification and continuity — the ranges a ticket covers, and the register nobody updatesPiping
- Joint preparation and fit-up — the hold point you only get oncePiping
- Preheat and post-weld heat treatment — hydrogen, hardness, and reading the chartPiping
- Non-destructive examination — choosing the method and reading the resultPiping
- Examination extent and progressive sampling — what five per cent actually obligesPiping