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
China EN 10208 Steel Pipes for Combustible Fluids – Top Suppliers and Reliable Factory Manufacturing
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
Class A Basic Requirements
- 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)
Class B Stringent Requirements
- 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
Q What is the difference between EN 10208-1 and EN 10208-2?
EN 10208-1 covers steel pipes for combustible fluids with Requirement Class A (basic requirements), while EN 10208-2 applies to Requirement Class B, which demands stricter testing and inspection — including impact testing and non-destructive testing — making it suitable for higher-risk pipeline applications.
Q Which steel grade should I choose for high-pressure pipeline systems?
For high-pressure or critical pipeline applications, grades such as L415, L450, or L485 are recommended. These grades offer higher yield and tensile strength, making them suitable for demanding operating conditions. Grades L555 and L690 may also be available for extreme requirements.
Q What certifications are required for EN 10208 steel pipes?
EN 10208 pipes must be supplied with an inspection certificate in accordance with EN 10204. For most pipeline projects, a Type 3.1 or Type 3.2 certificate is required, documenting the results of all mandatory tests and confirming compliance with the specified standard and grade.
Q Are EN 10208 pipes available in both seamless and welded types?
Yes. EN 10208 covers both seamless and welded steel pipes. Seamless pipes comply with dimensional tolerances per EN ISO 1127, while welded pipes follow EN ISO 1129. The pipe type must be specified at the time of ordering to ensure correct manufacturing and testing procedures are applied.
Q What delivery conditions are available for EN 10208 steel pipes?
EN 10208 steel pipes can be delivered in several heat treatment conditions, including normalized (N), quenched and tempered (QT), and as-rolled. The appropriate delivery condition depends on the specified steel grade and the mechanical property requirements of the project.
Q What non-destructive testing (NDT) methods are used for Class B pipes?
For Requirement Class B pipes under EN 10208-2, non-destructive testing methods include ultrasonic testing (UT), radiographic testing (RT), and magnetic particle inspection (MPI). These methods are applied to welds and seams to detect internal or surface defects that could compromise the integrity of the pipeline.