Equivalent of API 5L X56 Steel

High-strength linepipe steel plate manufactured to API 5L X56 requirements and offered as an equivalent to GB/T 9711 L390. This hot-rolled plate grade is engineered for demanding oil, gas and water transmission pipelines and for welded-pipe production (spiral submerged-arc welding, ERW and LSAW/longitudinal SAW).

Key features

• Conforms to API 5L X56 chemical and mechanical intent; X56 denotes a higher-strength linepipe grade (approximately 56 ksi yield strength range).
• Equivalent grade: GB/T 9711 L390.
• Typical applications: onshore and offshore oil & gas and water pipelines, pressured fluid transmission for power plants and chemical works, drainage and irrigation mains, pipeline infrastructure for roads and forestry, and heavy engineering structural components.
• Common pipe manufacturing uses: spiral SAW (SSAW), straight SAW (LSAW), and electric-resistance-welded (ERW) line pipe.

Available supply and services

• Hot-rolled API 5L X56 plates supplied cut-to-size or as full plates.
• Secondary processing available to order: plate cutting, rolling/forming, weld preparations and edge conditioning to customer drawings.
• Inspection and certification options: third-party testing and certification against EN or ASTM inspection regimes (mechanical, chemical and NDT on request).

Quality and traceability

Manufactured from qualified raw material and produced to pipeline-grade standards with material test reports available. We can accommodate project-specific test plans and documentation requirements for shipment and installation.

For pricing, lead times and available dimensions/thicknesses, request a quotation with your required quantities, plate dimensions and inspection/packaging needs.