Dear All,
Actually, we've got a big issue in our methanol pipeline: after welding and placing 321H pipe under service temperature, 650 C, and service pressure, 30bar, we' ve found the KNIFE LINE ATTACK (KLA) in the fusion line.
What do you think? what is the best solution to repair it and do a treatment to prevent occurring such defect?
Thanks in advance for your valuable advice,
Cordially, HTA