Description

DIN 2631 Welding Neck Flanges are welding neck flanges designed according to DIN 2631 standard. Welding neck flanges have a characteristic shape with a long, tapered neck that helps create a strong connection with the pipe, ensuring high pressure resistance and minimizing concentrated stresses. Materials commonly used to manufacture welding neck flanges include carbon steel, stainless steel, and other alloys depending on the requirements of the application.

Applications

DIN 2631 Welding Neck Flanges are commonly used in piping systems subject to high pressure and high temperature, such as in the oil and gas, chemical, power and other process industries. This welding neck flange is preferred for use in applications requiring high strength and high load capacity.

Standards

DIN 2631 is the German technical standard for weld neck flanges. This standard specifies the requirements for dimensions, materials, tolerances and other technical characteristics of weld neck flanges, to ensure compatibility and safety when used in piping systems. The technical parameters of weld neck flanges according to DIN 2631 include:

• Nominal size: Specified by DN (Diameter Nominal), such as DN 15, DN 50, DN 100.
• Nominal pressure: Usually PN 6, corresponding to the maximum allowable working pressure.
• Flange size: Including outside diameter, inside diameter, screw ring diameter, number and diameter of screw holes.
• Material: Specific steel grades, such as P250GH, 16Mo3, 1.4301 (according to EN 10028-2).

The DIN 2631 standard helps ensure that products manufactured to this standard have consistent quality and technical performance, meeting the requirements of harsh industrial applications.

DIN 2631 Welding Neck Flanges Dimensions and Thickness Chart

Summary table of commonly used materials for DIN 2631 Welding Neck Flanges