The weld part of piecing was broken. I'm not sure how and when it was broken. We have ever had the defect of the weld part. Please make sure to weld the part and not break. Thank you.
The welded portion of the jointed part was broken. It is unclear how it was broken, but we saw defect in welded part in the past, so please make sure to weld securely, not to get the jointed part broken.
The part welded at connection was broken. I do not know how it had been broken. There is still a problem at welded part. Please weld it carefully and pay attention not to be broken.