Pipes & Tubes
API 5L Line Pipe Grades Explained: Gr.B to X70, PSL1 vs PSL2
API 5L line pipe explained: grades B, X42, X52, X60, X65, X70, PSL1 vs PSL2 requirements, sour service, seamless and welded types, and how to read a pipe designation.
6 November 2026 · 3 min read