High Safety Margin Alloy Steel Flanges ANSI B16.5 DN80 Class 150

High Safety Margin Alloy Steel Flanges ANSI B16.5 DN80 Class 150

1. Product Description
An Alloy Steel Flange is a piping component made from alloy steel used to connect pipes, valves, pumps, pressure vessels, and other equipment to form a complete piping system. It creates a detachable, sealed, and pressure-bearing connection point by securing two flange faces with bolts and a gasket between them. Its core value lies in its ability to withstand high temperatures, high pressure, and extreme operating conditions, making it a critical foundation component in heavy industries like power generation, petrochemicals, and oil & gas.

2. Key Product Parameters
Material Grade: ASTM A182 F11 (1.25Cr-0.5Mo), F22 (2.25Cr-1.0Mo), F91 (9Cr-1.0Mo-V), A350 LF2 (for low-temperature service), etc.

Pressure Class:

ASME Standard: Class 150, 300, 600, 900, 1500, 2500.

EN/GB Standard: PN6, PN10, PN16, PN25, PN40, PN64, PN100.

Nominal Diameter:

ASME Standard: NPS 1/2" to 24" (ASME B16.5), 26" to 60" (ASME B16.47).

EN/GB Standard: DN15 to DN600 and above.

Facing Type: Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ), Male-and-Female (M/F), Tongue-and-Groove (T/G).

Manufacturing Standard: ASME B16.5, ASME B16.47, EN 1092-1, GB/T 9112~9124, etc.

Connection Type: Weld Neck (WN), Slip-On (SO), Socket Weld (SW), Threaded (Thd), Blind (BL), etc.

3. Product Advantages
Exceptional Mechanical Properties: Alloying elements (like Chromium, Molybdenum, Vanadium) provide higher strength, toughness, and creep resistance.

Excellent High-Temperature Pressure Resistance: Maintains high strength at elevated temperatures, resisting deformation or rupture.

Superior Corrosion & Oxidation Resistance: Especially suitable for services with corrosive media or high-temperature oxidation.

Long Service Life: With correct selection and installation, it can operate stably for decades, reducing the total cost of ownership.

High Safety & Reliability: Manufactured and inspected in strict compliance with international standards, ensuring system safety under extreme conditions.