ANSI B16.5 is a standard published by the American National Standards Institute (ANSI) entitled “Steel Pipe Flanges and Flange Fittings – Pressure Classes 150, 300, 400, 600, 900, 1500, 2500 “(Pipe Flanges and Flanged Fittings NPS 1/2 through NPS 24 Metric/Inch Standard).
This standard also specifies requirements for dimensions, pressure ratings, materials and tests of steel pipe flanges and related flange fittings for the connection and assembly of piping systems.
Common flanges using this standard are: welding neck flange, slip on hubbed flange, plate flat welding flange, blind flange, socket welding flange, threaded flange, anchor flange and loose sleeve flange.
The ANSI B16.5 standard is one of the most widely used flange standards in pipeline engineering. It specifies flanges with different pressure levels to meet different working conditions and requirements. These flanges can be used to connect pipes, valves, equipment and other components in various industrial fields, including petroleum, chemical, natural gas, electric power, etc.
Main content and features:
1.Size range: ANSI B16.5 standard specifies the size range of steel pipe flanges, covering the nominal diameter from 1/2 inch (15mm) to 24 inches (600mm), and also includes the nominal pressure from 150 psi ( PN20) to 2500 psi (PN420) pressure ratings.
2.Pressure rating: The standard defines flanges with different pressure ratings, which correspond to different working pressure and temperature conditions. Common pressure ratings include 150, 300, 600, 900, 1500, and 2500, among others.
3.Material requirements: The standard stipulates the corresponding chemical composition, mechanical properties and physical property requirements for the manufacturing materials of flanges, including carbon steel, stainless steel, alloy steel, etc.
4.Design requirements: The standard specifies the design requirements of the flange, such as the thickness of the flange, the number and diameter of the connecting bolt holes, etc.
5.Testing: The standard requires flanges to undergo various tests during the manufacturing process to ensure that they meet the requirements and to ensure the safety and reliability of the connection.
The content of the ANSI B16.5 standard is very comprehensive. It provides important guidance and specifications for engineers, designers and manufacturers to ensure that the connection and assembly of piping systems meet strict standards and requirements. In practical applications, the appropriate flange type and specification must be selected according to specific engineering requirements and design conditions to ensure the normal operation of the piping system.
Post time: Jul-27-2023
