SA336 F11 Class2 Channel Cover Alloy Steel Flanges for Shell and Tube Heat Exchanger
Yuhong Holding Group Co., Ltd. | Professional Pressure Vessel Manufacturer
Yuhong Holding Group Co., Ltd. specializes in the design and production of pressure vessels, with an annual production capacity of over 6,000 tons. Our product portfolio includes thin-film evaporators, heat exchangers, reaction vessels, towers, storage tanks, and related flange components. Adhering to ASME standards, we deliver high-performance, reliable industrial equipment solutions.
Product Name: Alloy Steel Channel Cover Flange ASME SA336 F11 Class2 for Heat Exchanger
This flange is engineered for heat exchangers, manufactured from ASME SA336 F11 Class2 alloy steel, ensuring exceptional sealing performance and durability under high-temperature and high-pressure conditions.
ASME SA336 F11 Class2 Chemical Composition
| Element | C | Mn | Si | Cr | Mo |
| Content(%) | 0.05-0.15 | 0.30-0.60 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
ASME SA336 F11 Class2 Mechanical Properties
| Parameter | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| Value | 550-725 | ≥310 | ≥20 | 143-207 |
Common Flange Grades
We also supply flanges in other grades, including:
- SA350 LF3 (Low-Temperature Service)
- ASTM A182 F304/F316 (Stainless Steel)
- ASTM A105 (Carbon Steel)
| Flange Type | Common Materials | Applied Components | Function |
| Slip-On Flange | Carbon Steel (A105), Alloy Steel (F11, F22), Stainless Steel (304, 316) | Piping Connections, Heat Exchanger Shell | Connects piping or equipment to the heat exchanger shell, easy to install and remove. |
| Weld Neck Flange | Carbon Steel (A105), Alloy Steel (F11, F22), Stainless Steel (304, 316) | High-Pressure Heat Exchanger Shell, Pipe Ends | Provides high strength and stress resistance, suitable for high-pressure and high-temperature applications. |
| Threaded Flange | Carbon Steel (A105), Stainless Steel (304, 316) | Small Piping Connections | Suitable for low-pressure systems or where welding is not required, allows quick connection and disconnection. |
| Socket Weld Flange | Carbon Steel (A105), Stainless Steel (304, 316) | Heat Exchanger Pipe Connections | Used for small-diameter piping, offers good fatigue and leak resistance, suitable for high-pressure situations. |
| Lap Joint Flange | Stainless Steel (304, 316), Alloy Steel (F11, F22) | Piping, Heat Exchanger Shell and Heads | Used with stub ends, allows flexibility for alignment and adjustment of connection parts. |
| Blind Flange | Carbon Steel (A105), Stainless Steel (304, 316), Alloy Steel (F11, F22) | Heat Exchanger Heads, Shell Ends | Used to seal the openings of heat exchangers or piping, provides closure for maintenance and inspection. |
| Ring Type Joint Flange | Alloy Steel (F11, F22), Stainless Steel (304, 316) | High-Pressure Heat Exchanger Shell, Pipe Ends | Suitable for high-pressure and high-temperature conditions, seals using a metal ring for better leakage resistance. |
Sealing Face Types for Heat Exchanger Flanges
Standard design for general applications.
Contact pressure concentrated on the raised ring.
Uses metal ring gaskets for high-pressure systems.
Ideal for critical sealing requirements.
Full-surface contact with non-metallic gaskets.
Suitable for low-pressure environments.
Yuhong Holding Group Co., Ltd. – Your Trusted Partner in Pressure Vessel Solutions
With advanced manufacturing facilities and strict quality control, we ensure compliance with global standards (ASME, EN, GB). Customized specifications and material certifications are available upon request.
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SA336 F11 Class2 Channel Cover Alloy Steel Flanges for Shell and Tube Heat Exchanger Images
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