Hello Sirs, I am making a WPS in accordance with AWS D1.1 2020 Structural Welding Code and I have a problems when specifying the MAXIMUM PREHEATING TEMPERATURE as well as the maximum interpass temperature. According to AWS, the maximum preheating and interpass temperature shall be shown on WPS but there is no instructions to help me pick up maximum preheating temperature in AWS D1.1 CODE. Could you please tell me how to specify the maximum preheating temperature or which materials that i can refer to find out the instructions. Thank you so much in advance