I am carrying out a final Year project on Effect of PWHT on "Mechanical properties of Weldmenst of SA387 GR11 Cl2 (Cr1.25%, Mo0.5%)".
I need to know that is it important to Preheat the Material before welding and how we should arry out welding(Is it Important to carry its root pass from TIG)
How Many passes we should do for welding the 12 MM plater of this material.
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