Unfortunately, I couldn't find a free download link for the ASME BPE PDF. The ASME BPE standard is a copyrighted document, and as such, it is not freely available for download.
If you are a student or an employee of a large engineering firm (EPC), your library likely has a subscription to Techstreet or the ASME Digital Collection . You can usually access the PDF for free or a nominal printing fee through these institutional licenses. asme bpe pdf free download