Classification Standards for Connection Box Flanges

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5 flanges: Weld Neck (WN), Long Weld Neck (LWN), Slip-On (SO), Socket Weld (SW), Lap Joint (LJ), Threaded, Blind. Pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings according the American National Standard ANSI B16. In industries such as Oil & Gas, petrochemical, power generation, semiconductor manufacturing, and water treatment, flange connections must safely withstand internal pressure, temperature fluctuations, vibration, and corrosive environments. The American National Standards Institute (ANSI) and American Society of Mechanical Engineers (ASME) have developed the most widely used flange standards in North America and many parts of the world: ASME B16. Material choice is also critical to ensure compatibility with process fluids and environmental factors.

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