Seam Defect

You can't be serious!!!!!!!!!

How can you expect anybody to answer such a ridiculous question?

Don't know what MPI is,

But there where times where we ordered 72" x 144 3/8" 304 ss plates, we always required them to be stress relieved.

We put it on our water jets and as we where cutting them and as we cut, there was so much stress in the plates it would bulking up 8-12 inches snapping the head.

Had a hell a hell of a time raving the sheet. After showing the outside sales, they didn't know what happened, but replaced the material.

Also at a company where i had worked, a large order if sanitary tubing, the weld seams where poorly done, and as you finished the tubing, 1-1/2" to 4" tubing, where they got a 'good deal'. Where they would not return it, so, this company passed the defects along to its unsuspecting customers.

One of which was myself about 4 years later.

But to your accept and reject them, you can refuse the load. I have done that just on visual inspection of defects on plates

MPI= Magnetic Particle Inspection. There are all kinds of applicable codes.

Thanks

If you have acceptance criteria for defects given by your design guy use that or refer suitable standard. Maybe simpler to consult someone who does such calculations and can interpret a suitable guideline.

At the root of the problem it maybe process issue where your supplier or fabrication guy has missed some step or done a hurried job. On a long term basis investigate the "short-cuts" taken.

Hope this helps.

Why testing material when the seams are defect? Are those repairable? All steel works should come with a certificate. Accept or reject based one what you wanted and what was delivered.

I do not know of or have worked with ANY specification that would allow an open seam.

I assume (we all know what that means) that this is extruded pipe?

OK --- I'll bite:

how on earth did you assume that this is extruded pipe, based upon the OP,

"mfr process defect seams in plates visually seen and through MPI also, how to acc or reject the plate mat'l or on what basis to accept" ...?

My mistake,call it a senior moment. The OP never stated what the seam is???? Is it rolled plate? Is it a mechanical induced seam? Is it a formed plate?