Issuing body
API
Latest edition
46th Edition (2018, A2 2024)
Region
USA, Global
Equipment items
2
Scope
Line pipe for pipeline transportation systems (PSL 1 / PSL 2).
Key requirements (7)
- Line pipe specification — PSL 1 (basic) and PSL 2 (more stringent toughness, hydrostatic, NDT).
- Grades: B, X42, X46, X52, X56, X60, X65, X70, X80 (number = SMYS in ksi).
- Manufacturing: SMLS (seamless), HFW (high-frequency welded ERW), SAWL (submerged arc longitudinal), SAWH (helical SAW).
- Hydrotest: per pipe (each length) — 75% SMYS minimum × 10 sec.
- Charpy impact for PSL 2: minimum average 27 J at 0 °C body, 40 J for ≥ X65.
- DWTT (drop weight tear test) for ≥ X70 in PSL 2.
- Heat treatment: hot rolled, normalized, Q&T per grade.