Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A182 F11 Cl2 Weld Neck Flange Essential Component for Safe and Operation in Power Generation
The ASTM A182 F11 Cl.2 welding neck flange is a forged pipe connection designed for demanding high-temperature, high-pressure conditions.
It is manufactured from chromium-molybdenum alloy steel (Grade F11) and subjected to a normalizing and tempering (Class 2) heat treatment, resulting in excellent high-temperature strength, creep resistance, and corrosion resistance.
Its signature long tapered neck design ensures seamless butt welding with the pipe, significantly reducing stress concentration.
As a result, it is widely used in core piping systems in thermal power generation, petrochemicals, and refining, serving as a critical component for safe and reliable operation.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| ASTM A182 F11 | 0.05 - 0.15 | 0.3 - 0.6 | 0.5 - 1 | 0.03 | 0.03 | 1 - 1.5 | 0.044 - 0.65 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| ASTM A182 F11 Flange | 205 | 415 | 20 |
ASTM A182 F11 Cl2 Flange Application
Power Generation: In fossil fuel and thermal power plants, it is crucial for connecting steam lines, boiler feedwater systems, and high-energy fluid circuits, withstanding high temperatures and pressures.
Petroleum Refining: Used in refining processes such as crude oil distillation, catalytic cracking, and hydrotreating, it resists corrosion from hydrocarbons and hydrogen.
Petrochemical Plants: Facilities used to produce ethylene, ammonia, and methanol handle corrosive chemicals and high temperatures.
