HELLO ,
I want to know, for what basis PREHEAT & PWHT have to select for the weld joints????, ( i know based on the thickness of the base metal ) any other reason to select PREHHEAT & PWHT?
hello sir,
I try to ask , how to select or what basis to select the electrodes and filler materials for all materials ( to prepare PWPS ) like carbon steel p1 to p1, and p1 to p5 , and P1 TO P8 .
HI,
, i know it is based on the competability of the materials to be welded, polarity , service , position , based on their mechanical properties ,
BUT i want to KNOW specifically eeach and every aspects ? for eg ( tensile strength of the electrode should be...