API 5L X52 Line Pipe
API 5L X52 is a higher-strength pipeline grade with a specified minimum yield level reflected by the X designation.
Grade overview
Modern X52 steels are commonly low-carbon microalloyed materials processed for weldability, toughness and strength.
Typical applications
Onshore and offshore pipelines, water and hydrocarbon transmission, gathering systems and industrial line pipe.
Equivalent / related designations
For PSL2 or sour service, additional chemistry, toughness, HIC/SSC and testing requirements may apply beyond the base grade designation.
Common manufacturers and supply
Produced by major plate, coil and pipe mills in Japan, South Korea, Europe, India, China and the Americas.
Fabrication and selection notes
Confirm the exact product standard, edition, dimensions, delivery condition, mechanical properties, impact requirements, heat treatment, welding procedure, corrosion environment and certification. A grade name alone is not sufficient for procurement or design approval.
QA/QC documentation
For critical service, verify heat number traceability, mill test certificate, chemical analysis, tensile/impact results where required, NDT, heat-treatment record and project-specific third-party inspection requirements.
Element Folio engineering reference. Values and requirements vary by standard edition, product form and manufacturer; always verify the latest governing specification.

