After cross-referencing between ASME IX and B31.1 I found the correlation about the maximum preheat temp. in QW-406.7 of ASME IX, which states that "a change in the preheating temperature of more than 25°F (15°C)" will be considered to affect the mechanical properties of the weldment and...
Hello Members,
ASME B31.1 specifies minimum preheat temperature for P-No. 5B and P-No. 15E at 205 deg. C for all thicknesses. How many degrees may the preheat temp. exceed the specifies min. preheat temp?
Best regards,
MZA
