ASTM A182 F22 Flange Manufacturer in China | A182 F22 Weld Neck, Slip On & Blind Flanges
We are a professional manufacturer and exporter of ASTM A182 F22 Chrome Moly Alloy Steel Flanges in China, specializing in A182 F22 Weld Neck Flanges, A182 F22 Slip On Flanges, A182 F22 Blind Flanges, and forged alloy steel flanges for high-temperature and high-pressure applications.
Our ASTM A182 F22 flanges are widely used with ASTM A335 P22 alloy steel pipes and ASTM A234 WP22 pipe fittings in oil & gas, petrochemical, refinery, power generation, and pressure vessel industries.
What Is ASTM A182 F22?
ASTM A182 is the standard specification covering forged or rolled alloy steel and stainless steel flanges, forged fittings, valves, and components for high-temperature service.
Grade F22 is a 2.25% Chromium – 1% Molybdenum (2.25Cr-1Mo) low alloy steel that provides improved high-temperature strength, creep resistance, oxidation resistance, and corrosion resistance compared with F11 and F12 grades.
ASTM A182 F22 flanges are known for:
- Excellent weldability
- High tensile strength
- Superior toughness
- Oxidation and scaling resistance
- Good resistance to hydrogen attack
- Long service life under elevated temperatures
A182 F22 is also commonly known as:
- 2 1/4 Chrome Flange
- 2.25Cr-1Mo Alloy Steel Flange
- Chrome Moly Steel Flange
Equivalent Material Information:
- ASTM A182 / SA182 F22
- UNS K21590
- ASTM A335 P22
- ASTM A234 WP22
ASTM A182 F22 Flange Product Range
We manufacture and supply:
- ASTM A182 F22 Weld Neck Flanges
- ASTM A182 F22 Slip On Flanges
- ASTM A182 F22 Blind Flanges
- ASTM A182 F22 Socket Weld Flanges
- ASTM A182 F22 Threaded Flanges
- ASTM A182 F22 Lap Joint Flanges
- ASTM A182 F22 Spectacle Blind Flanges
- Custom Forged F22 Flanges
ASTM A182 F22 Flange Specifications
Material Standard
- ASTM A182 / ASME SA182 F22
Flange Standards
- ANSI B16.5
- ANSI B16.47 Series A & B
- MSS SP-44
- API 605
- ANSI B16.36
- ANSI B16.48
- DIN Standards
- BS Standards
- EN Standards
- Custom Drawings
Size Range
- 1/8″ NB to 60″ NB
Pressure Classes
- Class 150
- Class 300
- Class 600
- Class 900
- Class 1500
- Class 2500
- PN6 / PN10 / PN16 / PN25 / PN40
Flange Face Types
- Raised Face (RF)
- Flat Face (FF)
- Ring Type Joint (RTJ)
Manufacturing Process
- Forged
- Heat Treated
- CNC Machined
ASTM A182 F22 Flange Dimensions Standards
ANSI Standards
- ANSI B16.5
- ANSI B16.47
- MSS SP44
- ANSI B16.36
- ANSI B16.48
DIN Standards
- DIN2527
- DIN2566
- DIN2573
- DIN2576
- DIN2641
- DIN2642
- DIN2655
- DIN2656
- DIN2627
- DIN2628
- DIN2629
- DIN2631
- DIN2632
- DIN2633
- DIN2634
- DIN2635
- DIN2636
- DIN2637
- DIN2638
- DIN2673
BS Standards
- BS4504
- BS1560
- BS10
ASTM A182 F22 Chemical Composition (%)
| Grade | C | Mn | Si | S | P | Cr | Mo |
|---|---|---|---|---|---|---|---|
| A182 F22 | 0.05-0.15 | 0.30-0.60 | 0.50 | 0.03 | 0.045 | 0.8-1.25 | 0.44-0.65 |
ASTM A182 F22 Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| A182 F22 | 415 | 205 | 20 |
ASTM A182 F22 Heat Treatment
ASTM A182 F22 weld neck flanges are generally supplied in the normalized and tempered condition to ensure optimal mechanical performance and toughness.
Heat Treatment Process
- Normalized and Tempered
- Post Weld Heat Treatment (PWHT) recommended after welding
- Controlled cooling for improved structural stability
PWHT is commonly required to reduce residual stresses and improve toughness after welding operations.
ASTM A182 F22 Hardness Requirement
According to ASTM A182/A182M and NACE MR0175 / ISO 15156 requirements:
- Maximum Brinell Hardness: 237 HBW
- Maximum Hardness: 22 HRC
This makes ASTM A182 F22 suitable for hydrogen sulfide (H₂S) environments and sour service applications.
Applications of ASTM A182 F22 Flanges
ASTM A182 F22 flanges are widely used in:
- Oil & Gas Industry
- Refineries
- Petrochemical Plants
- Thermal Power Plants
- Boiler Systems
- Pressure Vessels
- Heat Exchangers
- High Pressure Steam Pipelines
- Offshore Platforms
- Sour Service Applications
Why Choose Our ASTM A182 F22 Flanges?
- Professional forged flange manufacturer in China
- Competitive factory direct prices
- Complete quality inspection system
- Advanced forging and CNC machining equipment
- EN 10204 3.1 / 3.2 certification available
- PMI, UT, RT, hardness testing available
- Fast delivery for standard sizes
- OEM & customized dimensions accepted
- Rich export experience worldwide
Inspection & Testing
All ASTM A182 F22 flanges can be supplied with:
- Positive Material Identification (PMI)
- Ultrasonic Testing (UT)
- Hardness Testing
- Liquid Penetrant Testing (PT)
- Dimensional Inspection
- Visual Examination
Third-party inspection can be arranged upon request.
Packing & Documentation
Packing
- Fumigation-free wooden cases
- Export seaworthy packing
- Customized packing available
Documents
- EN 10204 3.1 MTC
- EN 10204 3.2 Certification
- Heat Treatment Reports
- NDT Reports
- PMI Reports
How to Order ASTM A182 F22 Flanges?
Example #1
ASME B16.5 WNRF Flange, ASTM A182 F22, 1 Inch, Class 600
Example #2
ASME B16.5 Weld Neck Flange, Raised Face, ASTM A182 F22, 6 Inch, Class 600
Example #3
ASME B16.5 Blind Flange RF, ASTM A182 F22, 6 Inch, Class 300
When sending inquiries, please specify:
- Flange Type
- Size
- Pressure Class
- Face Type
- Material Grade
- Quantity
- Standard
- Inspection Requirements
ASTM A182 F22 is a chromium-molybdenum (Cr-Mo) alloy steel grade mainly used for high-temperature and high-pressure service. Weld Neck Flanges (WNRF) made from F22 are widely applied in power generation, oil & gas, refineries, and petrochemical plants.
Download ASTM A182 F22 Flange specification
