thanks Mr. arcpro

Dear All;
B31.1 and B31.3 code recommends the use of bending pipes in power and petrochemical plants. in our project, the contractor use this technique by HFIB to avoid the use of elbows and minimize the weld joints, and of course in order to earn money.
My problem is that the contractor avoids ...

Dear All;
I would like to know the Standrads that address the classification of repairs or/and modifications of the regulated pressure vessels.