Welding Pipe Specification

May somebody has a general welding pipe specification?
I would like to have a short one to include in the purchase orders that we
send to our suppliers. We allways request for the WPS and PQR, but I would
like to add some text about the main points (one page could be more than
Thanks in advace.
Best Regards,
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Your question is too vague to answer correctly.
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