Your Professional Duplex Stainless Steel Pipe Fittings Supplier
Henan Shuangzhong Intelligent Technology Co., Ltd., an expert in precision manufacturing and pipeline system solutions, was founded in 1999. We are a professional manufacturer focusing on precision machining customization, pipeline equipment/pipe fittings customization, and rubber hose manufacturing and processing.
Our popular product offerings include carbon steel pipes, stainless steel pipes, flanges, pipe fittings, high-pressure hoses, fasteners, and alloy steel materials.
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![Duplex Stainless ASTM A815 Steel Pipe Fittings]()
Duplex Stainless ASTM A815 Steel Pipe FittingsASTM A815 WP S32760 is used in conjunction with ASTM A790 pipes to manufacture 90° elbows, 45° elbows, 180° bends, tees, reducers, caps, flanges and other pipe fittings. It is widely used in marine -
![S31803 Super Duplex Steel Pipe Fittings]()
S31803 Super Duplex Steel Pipe FittingsName: S31803 Super Duplex Steel Pipe FittingsSize: 1/2''-48'',WT:SCH5S-SCHXXSProduct manufacturing：Duplex steel ASTM A815 pipe fittings, duplex steel 2205 pipe fittings, Werkstoff No. 1.4462 duplex
Why Choose us
A Global Supply Chain
Our products have been successfully exported to numerous countries and regions worldwide, including the United States, Canada, Germany, India, Malaysia, Pakistan, the United Arab Emirates, Egypt, and the Middle East. These international market achievements have earned our products the trust and recognition of overseas customers.
Quality Control
The company holds ISO 9001:2015 and API certifications, demonstrating our commitment to quality management and industry standards.
OEM Service
Whether you require complex non-standard mechanical components, high-specification piping system components, or customized hydraulic hose assemblies, we offer a comprehensive range of solutions to meet your specific needs, allowing you to streamline procurement and save both time and effort.
Parameter
|
Chemical Element |
Content Range |
Key Function/Control Purpose for S31803 Super Duplex Steel Pipe Fittings |
Compliance Standard |
|
Chromium (Cr) |
21.0 - 23.0% |
Forms a protective oxide layer, core to resisting general and pitting corrosion |
ASTM/ASME SA815 |
|
Nickel (Ni) |
4.5 - 6.5% |
Balances duplex microstructure (austenite + ferrite), enhances toughness and low-temperature ductility |
ASTM/ASME SA815 |
|
Molybdenum (Mo) |
2.5 - 3.5% |
Strengthens corrosion resistance in chloride-rich environments (e.g., seawater, chemical tanks) |
ASTM/ASME SA815 |
|
Nitrogen (N) |
0.14 - 0.20% |
Boosts tensile/yield strength, stabilizes austenite phase to avoid brittleness |
ASTM/ASME SA815 |
|
Carbon (C) |
≤ 0.03% |
Controls carbide precipitation, preventing intergranular corrosion during welding/heat exposure |
ASTM/ASME SA815 |
|
Manganese (Mn) |
≤ 2.0% |
Aids in nitrogen solubility, maintains alloy workability without reducing corrosion resistance |
ASTM/ASME SA815 |
|
Silicon (Si) |
≤ 1.0% |
Improves casting/machining performance, kept low to avoid oxide inclusions |
ASTM/ASME SA815 |
|
Phosphorus (P) |
≤ 0.03% |
Minimized to prevent brittleness, especially in high-temperature or pressure applications |
ASTM/ASME SA815 |
|
Sulfur (S) |
≤ 0.02% |
Strictly controlled to avoid hot cracking during welding and reduce corrosion susceptibility |
ASTM/ASME SA815 |
Benefits of Duplex Stainless Steel Pipe Fittings
Enhanced Corrosion Resistance
Duplex stainless steel pipe fittings are highly resistant to corrosion, making them an ideal solution for applications in aggressive environments.
High Strength
With excellent tensile strength, duplex stainless steel pipe fittings can handle high-pressure applications, reducing the need for heavier pipe materials.
Good Weldability
Duplex stainless steel pipe fittings offer better weldability than other materials, ensuring a smoother fabrication process and high-quality welds.
Resistance to Stress Corrosion Cracking
The unique structure of duplex steel reduces the risk of stress corrosion cracking, which can be a significant concern in certain applications.
Oil and gas industry
1. Offshore platforms: Used in topside piping, fire water systems, and seawater cooling systems.
2. Subsea pipelines: Employed for transporting oil and gas in corrosive marine environments.
3. Processing equipment: Utilized in heat exchangers, pressure vessels, and separators.
4. Downhole applications: Used in tubulars and completion equipment where high strength and corrosion resistance are crucial.
Chemical processing
1. Chemical transport: Used for piping systems carrying corrosive chemicals.
2. Reactors and vessels: Employed in the construction of process equipment handling aggressive media.
3. Heat exchangers: Utilized where high thermal conductivity and corrosion resistance are required.
4. Storage tanks: Used for storing various chemicals and intermediate products.
Desalination and water treatment
1. Reverse osmosis systems: Used in high-pressure pumps and piping for seawater desalination plants.
2. Brine handling: Employed in piping systems for concentrated salt solutions.
3. Water distribution: Utilized in large diameter pipes for potable water systems, especially in coastal areas.
4. Wastewater treatment: Used in various stages of wastewater processing plants.
Pulp and paper industry
1. Digesters: Employed in the construction of vessels used for pulping wood chips.
2. Bleaching equipment: Used in piping and vessels for corrosive bleaching chemicals.
3. Recovery boilers: Utilized in high-temperature, high-pressure applications in the recovery process.
4. General mill piping: Used for various process fluids throughout paper mills.
Food and beverage processing
1. Brewing tanks: Employed in the construction of fermentation and storage vessels.
2. Dairy equipment: Used in milk processing and cheese-making equipment.
3. Fruit juice processing: Utilized in piping systems for acidic fruit juices.
4. General food processing: Used in various stages of food production where hygiene and corrosion resistance are paramount.
Offshore and marine applications
1. Seawater systems: Used in cooling water pipes, firefighting systems, and desalination plants on ships and offshore platforms.
2. Propeller shafts: Employed in marine propulsion systems.
3. Offshore wind turbines: Utilized in structural components and piping systems for offshore wind farms.
4. Port facilities: Used in jetty piping and loading arms for corrosive environments.
Additional Information
|
Shipping |
We provide multiple trustworthy shipping options such as UPS, DHL, TNT, EMS, and FedEx Express. |
|
Terms Of Payment |
We usually accept T/T, L/C, Paypal, Credit card, etc. If you prefer other payments terms, please feel free to discuss with us. |
Certificate
FAQ
As one of the leading duplex stainless steel pipe fittings manufacturers and suppliers in China, we warmly welcome you to buy high quality duplex stainless steel pipe fittings for sale here from our factory. Good service and reasonable price are available.
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