Views: 2 Author: Site Editor Publish Time: 2025-08-20 Origin: Site
In the modern industrial field, pipeline systems serve as key carriers for transporting various media, and their quality and performance directly affect the safety and stability of the entire production process. EN10216-2 steel tube has become an important tube material for many industrial projects due to its excellent quality, stable material properties, strict production process requirements, and wide application range.
The EN10216 European standard is a universal standard for seamless tube for pressure applications within the European Union, consisting of five parts covering steel tube technology and process conditions for various purposes. Among them, EN10216-2 is applicable to non alloy and alloy steel tube with specified high-temperature performance, and specifies in detail the requirements for various aspects such as chemical composition, mechanical properties, and manufacturing processes of such steel tube when used in high-temperature environments. Each section provides a detailed list of the specific steel grades, upper and lower limits of their chemical composition, mechanical performance indicators (room temperature and high temperature), heat treatment status, and specific inspection requirements for each category.
OD: | 10.2mm-711mm |
WT: | 1.2mm~100mm |
Length: | 5-12m or as to customer requirement |
Application: | Hydraulic system pipeline pipe, pipe for boiler project, construction structure, etc. |
Supplementary Technology: | Plain or threaded with socket or beveled with plastic caps, hydraulic testing, eddy current, Infrared test. |
Surface: | Painting, oil coating, Anti-corrosion & Insulation. |
Delivery state: | Hot Rolled, Cold Drawn. |
Steel Grade: | P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3, 13CrMo4-5, 10CrMo9-10. |
The chemical composition of EN10216 European standard materials strictly specifies the content range of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and other alloying elements (such as Cr, Mo, Ni, V, etc.) for each material.
Manufacturing Process: EN10216 Steel tube must be manufactured using seamless processes such as hot rolling, cold drawing, etc.
Heat Treatment: specifies the heat treatment status that steel tube must undergo upon delivery:
+N: Normalization
+NT: Normalization+Tempering
+Q: Quenching
+QT: Quenching and tempering (quenching and tempering)
+A: Solid solution annealing (mainly used for stainless steel)
Mechanical Properties:
Room temperature performance: tensile strength (Rm), upper/lower yield strength or specified plastic elongation strength (ReH/ReL/Rp0.2), elongation at break (A).
Process Testing:
Flattening test: to test the ductility and plastic deformation capacity of steel tube.
Expansion test: to test the expansion deformation ability of the tube end.
Bending test: to test the bending performance of steel tube.
Hydrostatic test: a mandatory item. Each steel tube must undergo a hydrostatic test to verify its ability to withstand rated pressure. The test pressure is determined based on the size and grade of the steel tube.
Non destructive testing: Eddy current testing (ECT) is usually required. For higher quality requirements, ultrasonic testing (UT) can be used to detect longitudinal defects, or magnetic flux leakage testing (FT) can be used to detect transverse defects.
EN 10217: This is the technical delivery condition for welded steel tube used for pressure purposes. EN 10216 and EN 10217 are two parallel series, one for seamless tube and the other for welded tube.
EN ISO 1127/EN ISO 4200: These are the size standards for steel tube (outer diameter, wall thickness series). The dimensions of EN 10216 tube need to comply with these basic standards.
PED (Pressure Equipment Directive 2014/68/EU): EN 10216 is a coordinated standard, and compliance with this standard is presumed to comply with the basic safety requirements of the EU PED. It is an important basis for products to affix the CE mark.
ASTM/ASME Standards: This is the standard system in the United States. Many steel grades in EN 10216 have similar or corresponding grades to ASTM/ASME standards (for example, 13CrMo4-5 in EN 10216-2 is similar to ASTM A335 P12, P235GH is similar to ASTM A106 Gr. B), but there may be differences in technical requirements, inspection methods, and acceptance criteria, and they cannot be completely equivalent.
EN10216-2 steel tube covers a wide range of dimensions, with outer diameters typically ranging from 10.2mm to 711mm and wall thicknesses between 1.6mm and 100mm. This diversified size specification can fully meet the pressure bearing requirements of different pipeline projects in terms of outer diameter and wall thickness. At the same time, its dimensional tolerance control is extremely strict, ensuring the tightness and interchangeability of pipeline connections, improving construction efficiency and overall system quality.
Outside Diameter D mm | Tolerances on D | Tolerances on T for a T/D ratio | |||
≤ 0,025 | > 0,025 | > 0,050 | > 0,10 | ||
≤ 0,050 | ≤ 0,10 | ||||
D ≤ 219,1 | ± 1% or ± 0.5mm | ± 12,5% or ± 0.4mm whichever is the greater | |||
D > 219,1 | whichever is the greater | ± 20% | ± 15% | ± 12,5% | ± 10% a |
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | |||||
Tolerances on inside diameter | Tolerances on T for a T/d ratio | |||||
d | d min | ≤ 0,03 | > 0,03 | > 0,06 | > 0,12 | |
≤ 0,06 | ≤ 0,12 | |||||
± 1% or ± 2 mm whichever is the greater | (+ 2% ,0)or (+ 4 mm,0) | whichever is the greater | ± 20% | ± 15% | ± 12,5% | ± 10% a |
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | ||||||
Dimension in mm
Length L | Tolerance on exact length |
L ≤ 6000 | 10 |
0 | |
6000 < L ≤ 12 000 | 15 |
0 | |
L > 12 000 | + by agreement |
0 |
High Strength and Good Toughness: EN10216-2 steel tube under this standard are strictly controlled in material selection, and the reasonable combination of non alloy steel and alloy steel gives them high strength.
Excellent High-Temperature Performance: The EN10216-2 standard is designed specifically for high-temperature applications, and seamless tube can maintain stable mechanical properties in high-temperature environments, ensuring the continuity and stability of industrial production.
Good Corrosion Resistance: Through careful blending of alloy elements, some EN10216-2 steel tube have certain corrosion resistance, which can effectively resist chemical erosion, extend the service life of the pipeline, and reduce maintenance costs.
Chemical Composition
| Steel grades | C% max | Si% max | Mn% max | P% max | S% max | Cr% max | Mo% max | Ni% max | Al.cał% min | Cu% max | Nb% max | Ti% max | V% max | Cr+ Cu+ Mo+ Ni% MAX |
P195GH | 0.13 | 0.35 | 0.7 | 0.025 | 0.02 | 0.3 | 0.08 | 0.3 | ≥ 0.020 | 0.3 | 0.01 | 0.04 | 0.02 | 0.7 |
P235GH | 0.16 | 0.35 | 1,20 | 0.025 | 0.02 | 0.3 | 0.08 | 0.3 | ≥ 0.020 | 0.3 | 0.01 | 0.04 | 0.02 | 0.7 |
P265GH | 0.2 | 0.4 | 1,40 | 0.025 | 0.02 | 0.3 | 0.08 | 0.3 | ≥ 0.020 | 0.3 | 0.01 | 0.04 | 0.02 | 0.7 |
16Mo3 | 0.12- 0.20 | 0.35 | 0.40- 0.70 | 0.025 | 0.02 | 0.3 | 0.25- 0.35 | 0.3 | ≥ 0.020 | 0.3 | - | - | - | - |
14MoV6-3 | 0.10- 0.15 | 0.15- 0.35 | 0.40- 0.70 | 0.025 | 0.02 | 0.30- 0.60 | 0.50- 0.70 | 0.3 | ≥ 0.020 | 0.3 | - | 0.22-0.28 | - | - |
13CrMo4-5 | 0.15 | 0.50- 1,00 | 0.30- 0.60 | 0.025 | 0.02 | 1,00- 1,50 | 0.45- 0.65 | 0.3 | ≥ 0.020 | 0.3 | - | - | - | - |
10CrMo9-10 | 0.10- 0.17 | 0.35 | 0.40- 0.70 | 0.025 | 0.02 | 0.70- 1,15 | 0.40- 0.60 | 0.3 | ≥ 0.020 | 0.3 | - | - | - | - |
Mechanical Properties
Steel grades | Mechanical properties during tensile testing in room temperature | Resilience | ||||||||||
Upper yield limit or yield strength Re or R0.2 for wall thickness of t min | Tensile strength Rm | Minimum energy average absorbed KVJ at the temperature of 0°C | ||||||||||
T≤16 | 16<T≤40 | 40<t≤60 | 60<T≤60 | Elongation A min% | I | T | ||||||
MPa | MPa | MPa | MPa | MPa | I | t | 20 | 0 | -10 | 20 | 0 | |
P195GH | 195 | - | - | - | 320- 440 | 27 | 25 | - | 40 | 28 | - | 27 |
P235GH | 235 | 225 | 215 | - | 360- 500 | 25 | 23 | - | 40 | 28 | - | 27 |
P265GH | 265 | 255 | 245 | - | 410- 570 | 23 | 21 | - | 40 | 28 | - | 27 |
16Mo3 | 280 | 270 | 260 | - | 450- 600 | 22 | 20 | 40 | - | - | 27 | - |
14MoV6-3 | 320 | 320 | 310 | - | 460- 610 | 20 | 18 | 40 | - | - | 27 | - |
13CrMo4-5 | 290 | 290 | 280 | - | 440- 590 | 22 | 20 | 40 | - | - | 27 | - |
10CrMo9-10 | 280 | 280 | 270 | - | 480- 630 | 22 | 20 | 40 | - | - | 27 | - |
Strict raw material screening: The chemical composition and mechanical properties of the raw materials used to produce EN10216-2 steel tube must meet the parameter requirements of the standard for the materials.
Advanced production technology: By adopting advanced processes such as perforation, rolling, and sizing, solid tube blanks are accurately processed into hollow tubes, and the dimensional accuracy and surface quality of steel tubes are gradually improved. During the perforation process, high-precision equipment is used to ensure the accuracy of the tube blank perforation; Further optimize the internal organizational structure of steel tubes in the rolling process; The sizing process ensures the accuracy of the outer diameter size of the steel tube, meeting the strict requirements for size in different application scenarios.
Heat treatment process: Heat treatment is a key step in improving the performance of seamless tubes. According to the standard requirements of different materials, by precisely controlling the heating temperature, insulation time, and cooling rate, the microstructure of steel can be effectively improved, and its comprehensive properties such as strength, toughness, and corrosion resistance can be further enhanced, making it fully comply with the strict requirements for high-temperature performance in the standard.
Comprehensive quality inspection: During the production process, various advanced non-destructive testing techniques are used, such as ultrasonic testing, eddy current testing, etc., to ensure the absence of defects such as cracks and sand holes.
Safe and Reliable: With excellent material properties and strict production processes, EN10216-2 steel tube can operate stably under various complex working conditions, providing extremely high safety guarantees for industrial pipeline systems and effectively reducing the risk of production accidents caused by pipeline failures.
Long Usage Time: Good corrosion resistance and high strength make seamless tube less prone to damage during long-term use, greatly extending the service life of pipeline systems and reducing economic losses and production interruptions caused by frequent pipeline replacement.
High Precision Installation: Accurate dimensional tolerance control makes pipeline installation easier and more efficient, reducing adjustments and rework during the installation process, improving engineering construction efficiency, and reducing construction costs.
Electric Power Industry
Chemical Industry
Mechanical manufacturing
Construction industry
Petrochemical
Energy and power
Aerospace
