Technically identical to and reproduced from ISO 13916:1996 which sets out requirements for the measurement of preheating temperature, interpass temperature and preheat maintenance temperature for fusion welding.
AS ISO 13916:2003 history
2018AS ISO 13916:2018 Welding — Measurement of preheating temperature, interpass temperature and preheat maintenance temperature
2003AS ISO 13916:2003 Welding - Guide on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature