Yuhong Group Co.,Ltd
| Payment Terms | L/C,T/T |
| Supply Ability | 100Tons/Month |
| Delivery Time | According to quantity |
| Packaging Details | PLY-WOODEN CASE |
| Material Grade | ASTM A350 LF2 Class 1 |
| Impact Test Temperature | -46°C / -50°F |
| Pressure Rating | ASME Class 150 to 2500# |
| Flange Face Type | RF (Raised Face), RTJ (Ring Type Joint) |
| Compliance Standard | ASME B16.5, MSS SP-44 |
| Cryogenic Certification | Charpy V-Notch Tested |
| Size Range | NPS 1/2" to 24" |
| H₂S Service Compatible | NACE MR0175 Compliant |
| Brand Name | YUHONG |
| Model Number | ASTM A350 LF2 CL1 |
| Certification | API, PED |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Supply Ability | 100Tons/Month |
| Delivery Time | According to quantity | Packaging Details | PLY-WOODEN CASE |
| Material Grade | ASTM A350 LF2 Class 1 | Impact Test Temperature | -46°C / -50°F |
| Pressure Rating | ASME Class 150 to 2500# | Flange Face Type | RF (Raised Face), RTJ (Ring Type Joint) |
| Compliance Standard | ASME B16.5, MSS SP-44 | Cryogenic Certification | Charpy V-Notch Tested |
| Size Range | NPS 1/2" to 24" | H₂S Service Compatible | NACE MR0175 Compliant |
| Brand Name | YUHONG | Model Number | ASTM A350 LF2 CL1 |
| Certification | API, PED | Place of Origin | CHINA |
| High Light | ASTM A350 LF2 CL1 Girth Flanges ，2500# Girth Flanges ，Class 150 Girth Flanges | ||
ASTM A350 LF2 Class 1 Girth Flanges are forged carbon/low-alloy steel fittings designed for low-temperature service down
to -46°C (-50°F). These flanges meet stringent impact toughness requirements (Charpy V-notch testing) for cryogenic
applications in pipelines, LNG plants, and offshore systems. Manufactured in compliance with ASME B16.5 dimensional
standards, they ensure leak-proof connections in high-pressure environments.
The chemical composition of ASTM A350 LF2 CL1 ensures optimal low-temperature performance and weldability:
| Element | Composition (% Max) | Key Function |
|---|---|---|
| Carbon (C) | 0.30% | Strength & Hardness |
| Manganese (Mn) | 0.60-1.35% | Toughness Enhancer |
| Phosphorus (P) | 0.035% | Weldability Control |
| Sulfur (S) | 0.040% | Machinability |
| Silicon (Si) | 0.15-0.30% | Deoxidizer |
| Nickel (Ni) | 0.40% Max | Low-Temp Toughness |
| Property | Requirement | Test Standard |
|---|---|---|
| Tensile Strength | 485-655 MPa (70-95 ksi) | ASTM A370 |
| Yield Strength (Min) | 250 MPa (36 ksi) | ASTM A370 |
| Elongation (Min) | 22% | ASTM A370 |
| Impact Toughness | Avg. ≥ 20 J (15 ft-lbf) | ASTM A370 |
| Standard | Equivalent Grade | Key Differences |
|---|---|---|
| EN 10222 | P355NH (1.0566) | Higher Ni allowance (≤1.0%) |
| NACE MR0175 | Compliant | H₂S service approved |
| JIS G3202 | SFVQ2A | Similar impact values |
ASTM A350 LF2 CL1 flanges are critical in:
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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