The following factors need to be considered in choosing the appropriate forged flange specifications and sizes: working pressure and temperature: First determine the working pressure and temperature range that the flange will be subjected to. Select the appropriate flange grade and material according to the relevant standards (such as ASME B16.5, DIN, etc.). Pipe size and connection method: according to the pipe’s outer diameter, wall thickness and connection method (welded, threaded, etc.), select the corresponding flange specifications. Generally there are Nominal Diameter (referred to as DN), nominal Pressure Rating (Pressure Rating) and so on. Flange surface number and form: According to the specific application needs, determine the flange surface number (generally plane, flange and concave and other forms). Linear and nonlinear loads: If the flange will be subjected to linear or nonlinear loads (such as vibration, impact, etc.), the appropriate material and specifications need to be selected to meet the strength and durability requirements. Material compatibility: If the flange will be connected to other equipment or pipes, ensure that the selected material has good compatibility with other components to avoid corrosion or failure problems. In addition to the above factors, factors such as budget, supply capacity and maintainability should also be taken into account. After confirming the above requirements, you can consult the relevant standards and design manuals, and choose the appropriate forged flange specifications and dimensions according to calculations or experience. If there are special requirements or complex situations, it is recommended to consult professional engineers and carry out detailed calculations and assessments.
