Yuhong Group Co.,Ltd
| Supply Ability | According to Clients' requirements |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Application | Offshore oil & gas platforms, Desalination plants, Marine engineering, Petrochemical and chemical processing |
| Product Name | Duplex Stainless SteeI Pipe Fitting |
| Payment Terms | L/C,T/T |
| Specification&Material | ASTM A815 UNS S32750 (1.4410 / Alloy 2507) |
| Delivery Time | Depend on quantity |
| Type | Seamless |
| Size Range | DN15-DN1200 (1/2"-48") |
| Testing | UT, PT, MT, PMI |
| Connection Type | Butt weld |
| Place of Origin | China |
| Brand Name | YUHONG |
| Model Number | ASTM A815 UNS S32750 (1.4410 / Alloy 2507) |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015 |
View Detail Information
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Product Specification
| Supply Ability | According to Clients' requirements | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Application | Offshore oil & gas platforms, Desalination plants, Marine engineering, Petrochemical and chemical processing | Product Name | Duplex Stainless SteeI Pipe Fitting |
| Payment Terms | L/C,T/T | Specification&Material | ASTM A815 UNS S32750 (1.4410 / Alloy 2507) |
| Delivery Time | Depend on quantity | Type | Seamless |
| Size Range | DN15-DN1200 (1/2"-48") | Testing | UT, PT, MT, PMI |
| Connection Type | Butt weld | Place of Origin | China |
| Brand Name | YUHONG | Model Number | ASTM A815 UNS S32750 (1.4410 / Alloy 2507) |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015 | ||
| High Light | ASTM A815 duplex steel elbow ，S32750 WP-S pipe fitting ，B16.9 stainless steel elbow | ||
ASTM A815 UNS S32750 WP-S Elbow, Duplex Stainless SteeI Pipe Fitting B16.9
The ASTM A815 UNS S32750 WP-S Elbow is a pipe fitting manufactured from super duplex stainless steel (UNS S32750) in accordance with ASTM A815. The designation “WP-S” indicates a seamless butt-weld fitting, meaning the fitting body is seamless wrought. This elbow is used to change the direction of fluid flow in piping systems (typically 45° or 90° or 180° ) (available in both long radius LR and short radius SR designs). UNS S32750 is known for its excellent resistance to pitting, crevice corrosion, stress corrosion cracking, and high mechanical strength. It is the Unified Numbering System designation for Duplex Stainless Steel 2507, a super duplex stainless steel with very high strength and exceptional corrosion resistance. Making it ideal for severely corrosive environments such as offshore engineering, petrochemical, seawater desalination, and flue gas desulfurization.
1.Chemical & Mechanical & Physical Properties
| ASTM A815 S32750 WP-S Chemical Composition (%) |
||||||||
| C | Mn | Si | P | S | Cr | Ni | N | Cu |
| ≤0.030 | ≤1.20 | ≤0.8 |
≤0.035 |
≤0.020 | 24.0-26.0 | 6.0-8.0 | 0.24-0.32 | ≤0.5 |
Mechanical Properties
|
Yield Strength,
min, ksi [MPa]
|
Tensile Strength,
ksi [MPa]
|
Elongation in 2 in. [50 mm]
or 4D, min, %
|
Hardness, HBW max
|
| 80[550] | 116[800]-140[965] | 15.0 | 310 |
Physical Properties
|
Density
|
Melting range
|
Thermal conductivity
|
Coefficient of thermal expansion
|
Continuous operating temperature
|
|
~7.8 g/cm³
|
1300℃ - 1440℃
|
14 W/(m·K)
|
12.0×10⁻⁶/K (20-100℃)
|
-50℃ to 250℃
|
|
Grade
|
Temperature
|
Cooling
|
Tempering
Temperature
|
| S32750 | 1920-2060℉ [1025-1125℃] |
Water quench or rapidly cooled by other means | Not required |
2. Key Advantage
The corrosion resistance of S32750 is its core advantage in replacing conventional duplex steel and high-nickel alloys, mainly reflected in the following aspects:
Pitting and Crevice Corrosion Resistance: With high Cr (25%), Mo (4%), and N (0.3%), the material achieves a PREN (Pitting Resistance Equivalent Number) of ≥40 (and up to 43), enabling long-term service in seawater. CPT ≥40℃ (20% NaCl solution), CCT ≥35℃.
Stress Corrosion Cracking (SCC) Resistance: The ferritic phase provides excellent SCC resistance in chloride-bearing environments, a property where austenitic stainless steels (e.g., 316L) are deficient.
Intergranular Corrosion Resistance: Extremely low C content (≤0.030%) reduces chromium carbide precipitation at grain boundaries.
General Corrosion Resistance: Highly resistant to organic acids (formic, acetic). Corrosion rate <0.05 mm/year in 10% formic acid and 50% acetic acid, versus >0.2 mm/year for 316L.
Erosion and Corrosion Fatigue Resistance: Excellent resistance to erosion corrosion and corrosion fatigue.
3. Key Applications
Offshore Engineering: Deepwater oil & gas extraction, subsea manifolds, FPSO; compliant with NACE MR0175/ISO 15156
Seawater Desalination: RO systems, MSF plants; exceptional chloride corrosion resistance (CPT ≥40℃)
Petrochemical: Refinery units, chemical reactors, heat exchangers
Power Generation & Environment: Flue gas desulfurization (FGD) systems, nuclear auxiliary piping
Pulp & Paper: Bleaching plant piping systems
Specialty Chemicals: PTA plants, fertilizer equipment
| Nominal Pipe Size (inches) |
Outside Diameter |
90° Elbows | 45° Elbows | |||
| (mm) | (inches) | Long Radius | Short Radius | Long Radius | ||
| Center to Face (inches) |
Center to Face (inches) |
Center to Face (inches) |
Radius (inches) |
|||
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | 7/16 | ||
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 |
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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