Dear,

We have observed transverse weld crack in saw welding in API 5L X70M material grade linepipe.
In order to find potential cause for same we have carried out chemical analysis which shows higher amount of Cu content arround > 1%.

During etching we also observed blackness in particular cracked portion during microscopic analysis. More or less no phase changes observed.

Regards,
Dhrumil Chauhan

Email: dhrumilchauhan0@gmail.com
Phone : 8866494026