Hot Products
- Carbon & Carbon Alloy Steel
- Stainless Steel
- Copper & Nickel Alloy
- Heat Efficiency Tubes
- Pipe Fittings
- Pipe Flanges
- Gasket, Stud Bolt &Nut
- Industrial Valves
0102030405
EN 10208:2009 Steel Pipes for Combustible Fluids - China Suppliers & Factory for Petroleum and Natural Gas Pipelines
Ordering Information
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)
Main Steel Grades
Steel grades are designated by "L" followed by the minimum yield strength (in MPa). Common grades include:
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Application |
|---|---|---|---|
| L245 | ≥245 | 415–760 | Low-pressure systems |
| L290 | ≥290 | 415–760 | General pipelines |
| L360 | ≥360 | 460–760 | Medium-pressure systems |
| L415 | ≥415 | 520–760 | High-strength pipelines |
| L450 | ≥450 | 535–760 | Demanding environments |
| L485 | ≥485 | 570–760 | High-pressure / critical use |
ⓘ Note: Higher grades (e.g., L555, L690) may also be included depending on the version/supplement.
Inspection & Testing Requirements
🔵 Requirement Class A (Basic)
- Chemical analysis (C, Si, Mn, P, S, etc.)
- Tensile test (yield strength, tensile strength, elongation)
- Hydrostatic test (minimum test pressure specified)
- Visual inspection (surface defects)
🟠 Requirement Class B (Stringent)
- All tests from Class A, plus:
- Impact testing (Charpy V-notch at specified temperatures)
- Non-destructive testing (NDT) — ultrasonic, radiographic, or magnetic particle inspection for welds/seams
- Additional mechanical tests (flattening test, bend test, or hardness test if required)
Other Key Requirements
- 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).
Conclusion
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.
📩 Want to order the same? Contact us Now to send your request!
❓ Frequently Asked Questions (FAQ)
Q What is EN 10208 and what does it cover?
EN 10208 is a European standard that specifies requirements for steel pipes used in pipelines transporting combustible fluids such as natural gas, oil, and other flammable media. It is divided into two parts: EN 10208-1 (Requirement Class A) and EN 10208-2 (Requirement Class B), each defining different levels of testing and quality assurance.
Q What is the difference between EN 10208-1 (Class A) and EN 10208-2 (Class B)?
Class A (EN 10208-1) covers basic requirements including chemical analysis, tensile testing, hydrostatic testing, and visual inspection. Class B (EN 10208-2) is more stringent and additionally requires impact testing (Charpy V-notch), non-destructive testing (NDT), and supplementary mechanical tests — making it suitable for high-risk or high-pressure pipeline applications.
Q Which steel grades are available under EN 10208?
Common steel grades under EN 10208 include L245, L290, L360, L415, L450, and L485, where the number indicates the minimum yield strength in MPa. Higher grades such as L555 and L690 may also be available depending on the standard version or supplementary specifications. The correct grade should be selected based on the operating pressure and environmental conditions of the pipeline.
Q What information is required when placing an order for EN 10208 pipes?
When ordering, you must specify the standard designation (EN 10208-1 or -2), pipe type (seamless or welded), dimensions (OD, wall thickness, length), steel grade, requirement class (A or B), delivery condition, inspection and testing requirements, and any additional requirements such as low-temperature impact testing or supplementary chemical analysis.
Q What certifications and markings are required for EN 10208 pipes?
EN 10208 pipes must be clearly marked with the standard reference, steel grade, manufacturer's identification, and heat/cast number. Inspection certificates in accordance with EN 10204 — typically Type 3.1 (certified by the manufacturer's authorized inspector) or Type 3.2 (certified by an independent third-party inspector) — are required to confirm compliance.
Q In what delivery conditions can EN 10208 pipes be supplied?
EN 10208 pipes can be supplied in various delivery conditions including normalized (N), quenched and tempered (QT), thermomechanically rolled (M), or as-rolled (AR), depending on the grade and class requirements. The delivery condition must be agreed upon at the time of ordering and will affect the mechanical properties and suitability of the pipe for specific applications.