Expert
Pl see the sketch attached and it is being used in steam line
Ur inputs on whether these joint configuration recommended in P91 welding
If so what is the welding procedure to be followed...
After Hot bent of SA335 P91, we carried out Normalizing at 1038 degree Celsius and found oxidation/Scale inside Pipe which was difficult to remove. Decided to purge with Argon and found the result is ok ( No Scale). Due to economy, we are now planning for Nitrogen purging instead of Argon...
we are one of the leading Power piping manufacturer. There is a welding between P91 pipes, when we offered root weld by GTAW with Filler wire ER 90S-B9, the customer who is leading power plant manufacturer wants only ER 90S-B3 instead of B9
what is the advantage in Using B3 in place of B9...
ASTM A992 HIGH STRENGH COLUMBIUM VANADIUM WITH ADDITION OF OTHER ALLOYING ELMENTS LIKE NI,CR,MO
1) IS IT CLASSIFIED IN AWS D1.1
2) IS IT PREQUALIFIED IN D1.1 AND WHAT IS THE PROCESS AND THE FILLERMETAL
3) IS IT ADOPTED IN ASME IF SO WHAT IS THE P-NUMBER
