EN10253-1 Butt Welding Pipe Fittings S235 S265 5D Carbon Steel 45
Degree Elbow for Industrial Piping Systems
Product Introduction of EN10253-1 5D Radius Elbows:
The EN 10253-1 standard encompasses factory-made carbon steel butt welding pipe fittings,
which include a diverse range of shapes like elbows, return bends,
concentric and eccentric reducers, equal and reducing tees, dished
ends, and caps. These fittings are provided without explicit
inspection prerequisites. The EN 10253-1 standard is rooted in the outdated DIN pipe fitting standard series.
Manufacturers have the liberty to fabricate these butt welding pipe
fittings using either hot or cold forming processes from raw
materials like seamless tubes, welded tubes, plates, forgings, and
bars. The decision on the manufacturing process for the base
material is left to the manufacturer's discretion, enabling
customization based on specific needs.
In essence, EN 10253-1 outlines the specifications and directives for producing carbon
steel butt welding pipe fittings, ensuring quality and
interoperability across diverse industrial settings.
Chemical Analysis and Testing of EN10253-1 Butt Welding Fittings:
The manufacturer is required to conduct chemical analysis of each
cast, as well as perform yield strength, tensile strength, and
hardness tests. The tensile test must comply with EN 10002-1
standards, with the test piece extracted longitudinally without
flattening. For fittings with a diameter equal to or less than
114.3 mm, a Brinell hardness test following EN 10003-1 guidelines
may be conducted instead of a tensile test. Both the chemical
composition and mechanical properties test results must meet the
specifications outlined in EN 10253-1.
Chemical Requirements S235 and S265:
Chemical requirements of steel grade S235 are as follows:
- Carbon (C): Maximum 0.16%
- Silicon (Si): Maximum 0.35%
- Manganese (Mn): Maximum 1.2%
- Sulphur (S): Maximum 0.025%
- Phosphorus (P): Maximum 0.030%
Elements not listed in the table should not be deliberately added
to the steel without the purchaser's agreement, except for
deoxidizing elements. However, residual elements may be acceptable
as long as they do not negatively impact the mechanical properties
and suitability of the steel.
Chemical requirements of steel grade S265 are as follows:
- Carbon (C): Maximum 0.20%
- Silicon (Si): Maximum 0.40%
- Manganese (Mn): Maximum 1.40%
- Sulphur (S): Maximum 0.025%
- Phosphorus (P): Maximum 0.030%
According to the standard, elements not included in this table
should not be intentionally added to the steel without the
agreement of the purchaser, except for elements used for
deoxidation. However, residual elements may be tolerated, provided
that they do not adversely affect the mechanical properties and
applicability of the steel.
EN10253-1 45 Degree Elbow 5D Dimensions:
| EN10253-1 5D 45 Degree Elbow Dimensions |
DN | Outside Diameter of Elbows(mm) | Wall Thickness(mm) | Face to center distance for 45° Elbows | Center-to-end Radius of the Elbow(mm) |
15 | 21.3 | 2.0 | 18 | 42.5 |
20 | 26.9 | 2.3 | 24 | 57.5 |
25 | 33.7 | 2.6 | 30 | 72.5 |
| 38.0 | 2.6 | 34 | 82.5 |
32 | 42.4 | 2.6 | 38 | 92.5 |
| 44.5 | 2.6 | 40 | 97.5 |
40 | 48.3 | 2.6 | 45 | 107.5 |
| 54.0 | 2.6 | 51 | 122.5 |
| 57.0 | 2.9 | 53 | 130 |
50 | 60.3 | 2.9 | 56 | 135 |
| 70.0 | 2.9 | 66 | 160 |
65 | 76.1 | 2.9 | 73 | 175 |
80 | 88.9 | 3.2 | 86 | 205 |
90 | 101.6 | 3.6 | 98 | 235 |
| 108.0 | 3.6 | 105 | 253 |
100 | 114.3 | 3.6 | 112 | 270 |
| 133.0 | 4.0 | 129 | 311.5 |
125 | 139.7 | 4.0 | 137 | 330 |
| 159.0 | 4.5 | 155 | 375 |
150 | 168.3 | 4.5 | 162 | 390 |
200 | 219.1 | 6.3 | 211 | 510 |
| 244.5 | 6.3 | 240 | 580 |
250 | 273.0 | 6.3 | 269 | 650 |
300 | 323.9 | 7.1 | 321 | 775 |
350 | 355.6 | 8.0 | 352 | 850 |
400 | 406.4 | 8.8 | 402 | 970 |
Advantages of S235&S265:
Advantages of S235 (compared to S265):
- Cost-Effective: S235 steel typically has lower carbon content, making it more
cost-effective for general structural applications where high
strength is not a primary requirement.
- Weldability: S235 steel is known for its good weldability, allowing for easy
fabrication and construction processes.
- Ductility: S235 steel exhibits good ductility, making it suitable for forming
and shaping processes without compromising its structural
integrity.
Advantages of S265 (compared to S235):
- Higher Strength: S265 steel has a higher maximum carbon content and manganese
content, leading to increased strength and load-bearing capacity
compared to S235 steel.
- Enhanced Hardness: The higher carbon and manganese content in S265 steel can result
in enhanced hardness, making it suitable for applications requiring
greater resistance to wear and abrasion.
- Improved Toughness: S265 steel may offer improved toughness properties, making it
suitable for applications subject to impact and dynamic loading
conditions.
Overall, the choice between S235 and S265 steel grades depends on
the specific requirements of the application, with each grade
offering distinct advantages based on factors such as cost,
strength, weldability, and toughness.
Usages of 45 Degree 3D Radius Elbows:
Improved Flow Characteristics: The smooth curvature of the 3D radius design helps reduce turbulence and pressure drop in the flow of liquids
or gases, enhancing overall flow characteristics within the piping
system.
Reduced Friction Loss: The gradual radius of the elbow minimizes frictional resistance,
leading to lower energy consumption and improved operational
efficiency in the system.
Enhanced Structural Integrity: 3D radius elbows provide a more gradual bend compared to standard
elbows, which helps distribute stress more evenly, reducing the
risk of fatigue and improving the overall structural integrity of
the piping system.
Minimized Erosion and Abrasion: The smoother flow path offered by the 3D radius design helps reduce erosion and abrasion of the pipe walls, extending the
lifespan of the piping system and reducing maintenance
requirements.
Space Efficiency: The compact design of the 45 degree angle combined with the 3D radius curvature allows for efficient
directional changes in tight spaces, optimizing the layout of the
piping system.
Aesthetic Considerations: In applications where visibility of the piping system is
important, the smooth and visually appealing curvature of 3D radius elbows can contribute to a more professional and aesthetically pleasing
installation.
Versatile Applications: 3D radius 45 degree elbows are versatile components that can be used in a wide range of
industries and applications, providing flexibility in piping design
and installation.
