ASME B16.5 CLASS 300 Flange

ASME B16.5 is a standard developed by the American Society of Mechanical Engineers for pipe flanges and flange connections. This standard provides detailed specifications for flanges of various sizes, pressure levels, materials, and surface types to meet the needs of various industrial applications. ASME B16.5 Class 300 flange, as an important type, is widely used in industries such as petroleum, chemical, natural gas, power, pharmaceuticals, and food.

Types & Material

ASME B16.5 Class 300 flanges have a variety of types and can be classified according to the connection method:welding neck flange,slip on flange,socket welding flange,threaded flange,lap joint flange,blind flange。

According to material:carbon steel flange,alloy steel flange,stainless steel flange,duplex stainless steel flange etc.

Chemical Composition

Mechanical Properties

Dimension of ASME B16.5 CLASS 300 Flange 

ASME B16.5 Class 300 flange is a common pipe fitting with the following characteristics:

1. Moderate pressure rating: Class 300 flanges are suitable for medium pressure rating pipeline systems and typically can withstand working pressures of 150 to 300 psi (pounds per square inch).

2. Diversified materials and sealing surfaces: Class 300 flanges can be made of various materials, such as carbon steel, stainless steel, etc., to meet the needs of different media and environments. In addition, the flange also has various surface types, such as raised face (RF), concave face (FM), tenon face (M), and ring connection face (RJ), to meet various connection requirements.

3. Excellent sealing performance: Class 300 flanges focus on improving sealing performance during the design and manufacturing process. By adopting a reasonable sealing structure and high-quality sealing materials, it is ensured that the flange connection has good sealing performance and prevents medium leakage.

4. Easy to install and maintain: The Class 300 flange adopts standard dimensions and connection methods, making installation and maintenance simple and convenient. Meanwhile, the flange also has good interchangeability, reducing maintenance and replacement costs.

ASME B16.5 Class 300 flanges are widely used in industries such as petroleum, chemical, natural gas, electricity, pharmaceuticals, and food. In these fields, Class 300 flanges play an important connecting role, ensuring the safe and stable operation of pipeline systems.