Yuhong Group Co.,Ltd
| Dimensions | ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange |
| Surface | RTJ |
| Packaging | Plywood Case /Pallet |
| Delivery Time | 7 DAYS |
| Size | 1/2" to 48" |
| Type | Weld Neck Flange |
| Payment Terms | L/C,T/T |
| Thickness | sch5S to sch.XXS |
| Packaging Details | Ply-wooden Case / pallet |
| Material | F347 / UNS 34700 / EN 1.4550 |
| High Light | ASTM A182 F347 Stainless Steel Flange , Weld Neck Flange, WNRTJ Forged Flange |
| Class | 150#, 300#, 400#, 600#, 900#, 1500#, 2500# |
| Standard | B16.5, B16.47 series A, series B |
| Model Number | ASTM A182 F347 Stainless Steel Weld Neck Flange |
| Brand Name | YUHONG |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Dimensions | ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange | Surface | RTJ |
| Packaging | Plywood Case /Pallet | Delivery Time | 7 DAYS |
| Size | 1/2" to 48" | Type | Weld Neck Flange |
| Payment Terms | L/C,T/T | Thickness | sch5S to sch.XXS |
| Packaging Details | Ply-wooden Case / pallet | Material | F347 / UNS 34700 / EN 1.4550 |
| High Light | ASTM A182 F347 Stainless Steel Flange , Weld Neck Flange, WNRTJ Forged Flange | Class | 150#, 300#, 400#, 600#, 900#, 1500#, 2500# |
| Standard | B16.5, B16.47 series A, series B | Model Number | ASTM A182 F347 Stainless Steel Weld Neck Flange |
| Brand Name | YUHONG | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM A182 F347 weld neck flange ，EN 1.4550 stainless steel flange ，WNRTJ flange with raised face | ||
ASTM A182 F347 / 1.4450 Stainless Steel Flange UNS S34700 Forged WN RTJ Flange
ASTM A182 F347 / 1.4550 Stainless Steel Weld Neck RTJ Flange is a high-strength, forged steel pipe connector designed for permanent attachment to piping systems via a full-penetration butt weld. It features a specialized metal-sealing grooved face and is manufactured from a niobium-stabilized austenitic stainless steel, making it specifically engineered for severe high-temperature, high-pressure, and corrosive service environments.
How it works?
When this flange is welded to a pipe (WN) and bolted to an opposing RTJ flange with a metal ring gasket placed in the grooves, the tightening of the stud bolts forces the two flanges together. The gasket is plastically deformed into the groove walls, creating a leak-proof seal that relies solely on the compressive strength of the metal, rather than on soft gasket fillers.
This makes the definition of its primary purpose: a permanent, fatigue-resistant pipeline joint that maintains a positive, blowout-proof metal seal under extreme fluctuating temperatures and pressures, while resisting weld-decay corrosion due to its niobium-stabilized chemistry.
GB | JIS | ASTM | GOST | EN |
06Cr18Ni11Nb | SUS 347 | F347 / S34700 | 08Х18Н12Б | 1.4550 X6CrNiNb18-10 |
Chemical Composition of ASTM A182 F347 / EN 1.4550 Stainless Steel Weld Neck Flange Forged WNRTJ Flange
| Cr | Ni | C | Mn | P | S | Si | Cb&Ta | Fe |
| 347 | 17.00 min.-19.00 max. | 9.00 min.-13.00 max. | 0.08 | 2.00 | 0.04 | 0.03 | 0.75 | 10 x (C + N) min.-1.00 max. | Balance |
Mechanical properties of ASTM A182 F347 / EN 1.4550 Stainless Steel Weld Neck Flange Forged WNRTJ Flange
| Yield Strength 0.2% Offset | Ultimate Tensile Strength | Elongation in 2 in. | Hardness | ||
|---|---|---|---|---|---|
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 30,000 | 205 | 75,000 | 515 | 40 | 201 Brinell |
Typical Applications (Industries)
Due to its high-temperature stability and RTJ sealing reliability, this flange is widely used in:
Oil & Gas Upstream/Downstream: Wellheads, Christmas trees, flow lines, and refinery hydrotreaters.
Petrochemical: High-pressure process piping, cracking units, and reformers.
Power Generation: Superheater and reheater connections in thermal power plants.
Heat Exchangers & Pressure Vessels: Nozzle connections subject to cyclic thermal loading.
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 Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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