SA 517 grade b AND S690 QL1

[Ramezadel]

good morning
i am trying to weld SA 517 grade B and S690 QL1 using SMAW electorde 11018 M for repair for transpot LPG pressure vessel but every time PQR fails at charpy v notch impact test give me max reading 26 joule
need for help please...

 

[r6155]

Plate S690 QL is for structural purpose, not for pressure vessels.

As I say in your post of 17feb20, you need a welding engineer.

Also contact a pressure vessel engineer.

Regards

 

[Ramezadel]

i have pessure vessels head made from naxta 70 model 1980
that is why we decide to use it

 

[r6155]

This pressure vessel is very dangerous. I understand that you are not in a position to handle this issue.
Are you aware of your responsibility?

Regards