EN10253-1 S235 S265 Carbon Steel 90 Degree Pipe Elbow SCH 5 To SCH XXS For Changing Directions of Piping Systems

EN10253-1 S235 S265 Carbon Steel 3D Radius 90 Degree Elbow for Industrial Piping Systems

Product Introduction of EN10253-1 90 Degree 3D Radius Elbows:

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.

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.

Testing Requirements of EN10253-1 Butt Weld Fittings:

1. 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.

2. 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.

3. 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.

4. 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 90 Degree Elbow 3D Dimensions: