[MW:26949] Hydro cracker Unit - Heater Radial coil welding material 347H

Dears Experts,

Hydro cracker Unit, Heater Radial coil welding base material 347H and Filler wire ER347H(Metrode) Size 4' x 13.49 Thickness 

When we start the welding, getting crack in the weld stop and start point 

Please advise me

Regards,

Amul Raj T    

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