When ordering pipes conforming to EN 10208, the following must be specified:

• Standard designation (EN 10208-1 or EN 10208-2)
• Type of pipe (seamless or welded)
• Dimensions (outside diameter, wall thickness, length)
• Steel grade (e.g., L245, L415, etc.)
• Requirement Class (A or B)
• Delivery condition (e.g., normalized, quenched and tempered)
• Inspection and testing requirements (e.g., non-destructive testing, hydrostatic test)
• Additional requirements (e.g., impact testing at lower temperatures, supplementary chemical analysis).

Steel grades are designated by "L" followed by the minimum yield strength (in MPa). Common grades include:

Note: Higher grades (e.g., L555, L690) may also be included depending on the version/supplement.

• Delivery condition: Pipes may be supplied in normalized, quenched and tempered, or as-rolled condition.
• Dimensions & tolerances: Compliant with EN ISO 1127 (seamless) or EN ISO 1129 (welded).
• Marking & certification: Pipes must be marked with standard, grade, manufacturer, and inspection certificate (EN 10204 Type 3.1 or 3.2).

EN 10208:2009 is a critical standard for steel pipes in combustible fluid transportation, with Class B pipes undergoing stricter testing for high-risk applications. Key considerations include material grade selection, inspection level, and certification requirements based on operational demands.