EN10253-1 S235 S265 Pipe Fitting Elbow Carbon Steel Butt Weld 3D
180 Degree Pipe Elbow for Piping Systems
Product Introduction:
EN 10253-1 standard covers factory-wrought carbon steel butt welding pipe fittings,
including a variety of shapes such as elbows, return bends,
concentric and eccentric reducers, equal and reducing tees, dished
ends, and caps. These fittings are supplied without specific
inspection requirements. The EN 10253-1 standard is derived from the obsolete DIN pipe fitting standard series.
Manufacturers have the flexibility to produce these butt welding
pipe fittings using either hot or cold deformation processes from
raw materials such as seamless tubes, welded tubes, plates,
forgings, and bars. The choice regarding the manufacturing process
for the base material is at the discretion of the manufacturer,
allowing for customization based on specific requirements.
Overall, EN 10253-1 sets the specifications and guidelines for the production of
carbon steel butt welding pipe fittings, ensuring quality and
compatibility within various industrial applications.
Testing Requirements of EN10253-1 Butt Weld Fittings:
Chemical Analysis:
- The manufacturer must conduct a chemical analysis of each cast to
verify that the material composition meets the requirements
specified in EN10253-1.
Mechanical Testing:
- Yield Strength Test: This test measures the stress at which a material begins to deform
plastically. It is important for determining the point at which a
material transitions from elastic to plastic behavior under tensile
loading.
- Tensile Strength Test: This test measures the maximum stress a material can withstand
before it breaks under tension. The test is carried out in
accordance with EN 10002-1, which specifies the testing procedures
for tensile testing.
- Hardness Test: The hardness test measures the resistance of a material to
deformation. Brinell hardness testing, as per EN 10003-1, is
conducted on fittings with a diameter equal to or less than 114.3
mm in place of a tensile test.
Testing Procedures:
- The tensile test should be conducted in the longitudinal direction
without flattening the test piece to accurately assess the
material's mechanical properties.
- For fittings with a diameter equal to or less than 114.3 mm, a
Brinell hardness test is performed in place of a tensile test to
evaluate the material's hardness.
Compliance Requirements:
- Both the chemical composition analysis and mechanical testing
results must conform to the standards outlined in EN10253-1 to
ensure the fittings meet the required quality and performance
criteria.
By adhering to these testing requirements and ensuring compliance
with EN10253-1 standards, manufacturers can verify the quality and integrity of their
butt-weld fittings to meet industry regulations and specifications.
EN10253-1 3D 180 Degree Elbows Dimensions:
| EN10253-1 3D 180 Degree Elbow Dimensions |
DN | Outside Diameter of Elbows or Return Bends(mm) | Wall Thickness(mm) | Center-to-center Length of the Return Bends(mm) | Face to top length for Return Bends(mm) |
15 | 21.3 | 2.0 | 56 | 38 |
20 | 26.9 | 2.3 | 57 | 43 |
25 | 33.7 | 2.6 | 76 | 56 |
| 38.0 | 2.6 | 90 | 64 |
32 | 42.4 | 2.6 | 95 | 70 |
| 44.5 | 2.6 | 102 | 73 |
40 | 48.3 | 2.6 | 114 | 83 |
| 54.0 | 2.6 | 137 | 95 |
| 57.0 | 2.9 | 144 | 100 |
50 | 60.3 | 2.9 | 152 | 106 |
| 70.0 | 2.9 | 184 | 127 |
65 | 76.1 | 2.9 | 191 | 132 |
80 | 88.9 | 3.2 | 229 | 159 |
| 101.6 | 3.6 | 267 | 184 |
| 108.0 | 3.6 | 285 | 196 |
100 | 114.3 | 3.6 | 305 | 210 |
| 133.0 | 4.0 | 362 | 247 |
125 | 139.7 | 4.0 | 381 | 262 |
| 159.0 | 4.5 | 432 | 295 |
150 | 168.3 | 4.5 | 457 | 313 |
175 | 193.7 | 5.6 | 540 | 367 |
200 | 219.1 | 6.3 | 610 | 414 |
| 244.5 | 6.3 | 680 | 462 |
250 | 273.0 | 6.3 | 762 | 518 |
300 | 323.9 | 7.1 | 914 | 619 |
350 | 355.6 | 8.0 | 1067 | 711 |
400 | 406.4 | 8.8 | 1219 | 813 |
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.
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.
Applications of EN10253-1 Carbon Steel 3D 180 Degree Elbows:
Wastewater Treatment Plants: In wastewater treatment plants, EN10253-1 Carbon Steel 3D 180 Degree Elbows are used to reverse the direction of the flow, redirecting the
treated water or sludge to the desired location for further
processing or disposal. They are often employed in applications
such as sewage treatment, sludge handling, and water reclamation
processes.
Chemical Plants: Chemical processing facilities often utilize EN10253-1 Carbon Steel 3D 180 Degree Elbows to change the flow direction in pipelines handling different
chemicals or fluids. These elbows allow for efficient routing of
pipelines, enabling the transfer of materials between different
processing units or storage tanks.
Power Generation Facilities: Power plants, including thermal power plants and nuclear power
plants, utilize EN10253-1 Carbon Steel 3D 180 Degree Elbows in their piping systems. These elbows help redirect the flow of
steam, water, or other fluids within the power generation
processes, facilitating efficient energy production.
Tight Space Installations: In applications where space is limited, such as in HVAC (heating,
ventilation, and air conditioning) systems, confined areas, or
retrofit projects, EN10253-1 Carbon Steel 3D 180 Degree Elbows are used to navigate the piping through tight spaces or obstacles.
They allow for a significant directional change within a relatively
small area, optimizing the layout of the piping system.
Plumbing Systems: In residential, commercial, and industrial plumbing systems, EN10253-1 Carbon Steel 3D 180 Degree Elbows can be used to redirect water or fluid flow to accommodate
specific building layouts or plumbing requirements. They can be
employed in water supply lines, drainage systems, or irrigation
systems to change the direction of the flow as needed.
