ASTM A182 F22 UNS K21590 Blind RF Flange For Power Plant Boilers

ASTM A182 F22 Blind RF Flange

ASTM A182 F22 Blind RF Flange is ideal for high temperature and high pressure systems. Its chromium-molybdenum alloy composition provides excellent resistance to oxidation and creep.

Chromium-molybdenum alloy steel (UNS K21590) is suitable for high temperature and high pressure environments (such as power plant boilers and petrochemical equipment).

Blind flanges are used to close the end of the pipe to prevent the flow of media. They are commonly used in system isolation or future expansion interfaces.

Raised face flanges are used with gaskets (such as spiral wound gaskets) to achieve sealing. The raised face height is usually 1/16 inch (150-300 Class) or 1/4 inch (600-2500 Class).

Material & Grade :

Chemical Composition :

Mechanical Properties :

Application

High temperature and high pressure system:
Power station boiler (≤593°C), steam pipeline.
Refinery hydrogenation reactor, high temperature heat exchanger.

Pressure vessel head: used as a manhole or inspection port blind plate.

Pipeline isolation: close the pipeline during maintenance to prevent medium leakage.

Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.  

Jinjiang Factory: 
Main Products: Heat Exchanger, Pressure Vessel ,Condenser, Economizer, Evaporator, Column, Fired Heater;

Certificates: ASME PP, ASME S, ASME U, ASME NB, ISO3834, GB/T24001-2016/ISO 14001:2015, GB/T9001-2016/ISO9001:2015,
                      GB/T45001-2020/ISO45001:2018, TS2232A55-2026
Factory Info.: Workshop 6000 square meters, 160 workers, 1000sets/year.

 

Jiangyin Factory:
Main Products: Heat Exchanger, Pressure Vessel ,Condenser, Economizer, Evaporator;

Certificates: ASME U, ASME NB, GB/T9001-2016/ISO9001:2015,GB/T24001-2016/ISO 14001:2015, 
                      GB/T45001-2020/ISO45001:2018, GB/T9022.1-ISO10012-1.
Factory Info.: Workshop 24000 square meters, 120 workers, 600sets/year.
 

Yancheng Factory:
Main Products: Air-cooled Heat Exchanger, Cooling Tower, Pressure Vessel, Economizer, Evaporator;

Certificates: ASME U, CTI Certification, Air Cooler safety registration certificate, Pressure Vessel TS,
                      GB/T9001-2016/ISO9001:2015,GB/T24001-2016/ISO 14001:2015, GB/T45001-2020/ISO45001:2018                      
Factory Info.: Workshop 100000 square meters, 450 workers, 2000sets/year.