Yuhong Group Co.,Ltd
| Payment Terms | L/C,T/T |
| Delivery Time | 7 DAYS |
| Packaging Details | Ply-wooden Case / pallet |
| Product Name | Alloy Steel Flange |
| Dimensions | ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange |
| Standard | ASTM A182 / ASME SA182 |
| Material | F5, F9, F11, F12, F22, F91 |
| OD | 1/2" to 48" |
| Class | 150# 300# 600# 900# 1500# |
| WT | Sch 5S to Sch XXS |
| Surface | FF, RF, RTJ |
| Type | Orifice Flange, Slip-on, Blind, Weldneck, Long Weldneck, SW Flange |
| High Light | ASTM A182 F5 Alloy Steel Flange, ASME B16.5 Forged WNRF Flange |
| Brand Name | YUHONG |
| Model Number | ASTM A182 F5 Alloy Steel WNRF Flange |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Delivery Time | 7 DAYS |
| Packaging Details | Ply-wooden Case / pallet | Product Name | Alloy Steel Flange |
| Dimensions | ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange | Standard | ASTM A182 / ASME SA182 |
| Material | F5, F9, F11, F12, F22, F91 | OD | 1/2" to 48" |
| Class | 150# 300# 600# 900# 1500# | WT | Sch 5S to Sch XXS |
| Surface | FF, RF, RTJ | Type | Orifice Flange, Slip-on, Blind, Weldneck, Long Weldneck, SW Flange |
| High Light | ASTM A182 F5 Alloy Steel Flange, ASME B16.5 Forged WNRF Flange | Brand Name | YUHONG |
| Model Number | ASTM A182 F5 Alloy Steel WNRF Flange | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM A182 F5 Weld Neck Flange ，Black Coated Weld Neck Flange ，Forged Weld Neck Flange | ||
ASTM A182 F5 Alloy Steel Forged Flange B16.5 WNRF Flange for Industries
ASTM A182 F5 WNRF Flange refers to the Weld Neck Raised Face flange, a design where the flange neck is welded to the pipe, and the sealing surface is slightly elevated (raised face) to enhance gasket compression and leak prevention. It is a specialized component used in high-temperature and high-pressure piping systems. Manufacturing Process--Produced via forging, ensuring superior structural integrity compared to cast alternatives. Conforms to ASME B16.5 for dimensions and pressure ratings (Class 150–2500).
Comparison with Similar Grades
ASTM A182 F5 vs. F9/F11:
F9: Higher chromium (8–10%) for better oxidation resistance at extreme temperatures.
F11: Similar to F5 but with added vanadium for enhanced creep strength .
ASTM A105 vs. A182 F5: A105 (carbon steel) is cheaper but unsuitable for high-temperature applications above 425°C (800°F) .
ASTM A182 F5 Alloy Steel Flange Chemical Composition
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A182 F5 | 0.15 | 0.3 – 0.6 | 0.5 | 0.03 | 0.03 | 4 – 6 | 0.044 – 0.65 |
ASTM A182 F5 Alloy Steel Flange Mechanical Properties
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A182 F5 | 275 | 485 | 20 |
Detailed Manufacturing Process
Forging: Heated to ~1200°C (2192°F), shaped via closed-die forging for grain refinement.
Heat Treatment:
Normalizing: Heated to 900–950°C (1652–1742°F), air-cooled to refine microstructure.
Tempering: Reheated to 650–700°C (1202–1292°F), then air-cooled to relieve stresses and enhance toughness.
Machining: CNC-machined to ASME B16.5 tolerances (e.g., bore diameter ±0.8 mm, face flatness <0.2 mm).
Surface Finish: Raised face (RF) serrations (125–250 µin RMS) for optimal gasket sealing.
Installation and Maintenance
Alignment: Weld neck flanges require precise alignment during welding to avoid stress concentration.
Bolt Tightening: Use ASME PCC-1 guidelines for bolt torque sequences to ensure even gasket compression .
In-Service Monitoring: Regular inspections for signs of creep, cracking, or pitting in high-temperature/pressure systems .
Industry-Specific Applications
Oil & Gas: Metering crude oil in high-pressure pipelines (e.g., API 14.3/AGA-3 standards).
Power Generation: Steam flow measurement in turbines (ASME PTC 6 compliant).
Petrochemical: Ethylene/cracker unit feed lines (resists hydrogen embrittlement).
Nuclear: Auxiliary cooling systems (ASTM A182 F5 is not for primary loops but used in secondary circuits).
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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