API 5L NACE MR 0175 Pipes
Scope. ANSI / API 5L specifies the manufacture of two product levels (PSL1 and PSL2) of Seamless and Welded steel pipe for the use of a pipeline in the transportation of petroleum and natural gas. for material use in a sour service application, refer to Annex H; for offshore service application, refer to Annex J of API 5L 45th Edition.