Dr. Lee's manuscript ended abruptly, with a cryptic warning scrawled in the margins: "Do not attempt to replicate. Consequences catastrophic."
It depends on the project specification. Many engineering, procurement, and construction (EPC) contracts explicitly require MSS SP-99 compliance. Using non-compliant parts risks voiding warranties or failing inspections. mss sp99 pdf
The standard does not strictly mandate one material but lists acceptable material standards. Dr. Lee's manuscript ended abruptly