I am a machinist and having dealt with the imported steels for a couple of decades now, I can tell you that they usually don't meet their claimed specifications.  Full of cracks, slag, inclusions and improper strength characteristics - even the expensive stainless steels.  Sure the pipeline will pass all the paper chases of  x-rays on the welds, ISO, pipeline inspectors and engineering OK's, but you know what...... when the leaks happen, they will happen on the bad areas.  That is where the lawyers will be able to prove false certificates and get the thing shut down.