Question

Arc kartan ke uprant electrod Ke Kitne hisse ko Thanda Kiya jata hai?​

Answer 1

Answer:

The preheat temperatures listed in the standard range from < 20 C (< 65 F) to 160 C (320 F). Starting with the 2006 revision, AWS D1. 1 incorporated a table (Table 3.2), to be used for prequalified welding processes (SMAW, SAW, GMAW, and FCAW).