Product Description:
Duplex stainless steel is a type of stainless steel that combines
the characteristics of both austenitic and ferritic stainless
steels. It is known for its unique microstructure, which typically
consists of approximately equal parts austenite and ferrite. This
composition gives duplex stainless steel a range of beneficial
properties, making it suitable for various applications. Key Characteristics as follow:
1. Strength: Duplex stainless steels generally offer higher
strength compared to standard austenitic stainless steels, making
them suitable for demanding applications.
2. Corrosion Resistance: They exhibit excellent resistance to
pitting and stress corrosion cracking, particularly in chloride
environments.
3. Weldability: Duplex stainless steels can be welded, but care
must be taken to control heat input during welding to avoid
detrimental phase transformations.
4. Mechanical Properties: They possess good toughness and
ductility, even at low temperatures.
Technical Parameters:
Product Material | S25073, S22583, S25554, S27603, S32750, S31260, S32550, S32760,
S32707 |
|---|
| Supply Standards | ASTM A789, A790, GB/T21832,GB/T21833 etc. |
| Size Range | Outer diameter: 6～630mm; Wall thickness: 0.5 ～ 20mm; Length:
Maximum 38 meters |
| Ends | Plain, Beveled, Threaded |
| Product Packaging | Bundles, Wooden Cases, Pallets or according to customer requirements |
| Technique | Cold Rolled, Hot Rolled |
| Material | Duplex Stainless Steel |
| Tolerance | ±1% |
| Surface Finish | 2B, Pickling, Passivation, Etc. |
| Shape | Round, Square, Rectangle |
| Material Properties | High Temperature Resistance, Corrosion Resistance, High Strength,
Good Formability, Good Weldability, Etc. |
| Product Type | Stainless Steel Round Tubing, Stainless Steel Structural Pipe,
Stainless Steel Welded Pipe, Stainless Steel Seamless Pipe |
Manufacturing Process:
Raw Material Preparation → Melting → Casting → Hot Rolling / Cold
Rolling → Forming → Welding (if applicable) → Heat Treatment →
Pickling and Passivation → Inspection and Quality Control →
Packaging and Shipping
Applications:
1. Petrochemicals: Duplex stainless steel has a wide range of applications. Due to
its excellent corrosion resistance and good strength, it can be
used to manufacture petrochemical equipment, pressure vessels,
pipelines, etc. Among these devices, duplex stainless steel can
effectively resist the corrosion of various chemicals, ensuring the
service life and safety of the equipment;
2. Oil and gas: In the oil and gas industry, duplex stainless steel plays a
crucial role in helping to resist harsh conditions. This is because
its strength, resistance to pitting and crevice corrosion are
superior to standard austenitic stainless steel, and the pitting
equivalent value (PREN) of duplex stainless steel is usually higher
than 40;
3. Construction industry: Duplex stainless steel continues to play an important role in
bridge construction. Bridges are used in corrosive and saline
environments, while requiring high bearing strength;
4. Chemical equipment: Duplex stainless steel has excellent corrosion resistance and
wear resistance, and can be used to make chemical storage tanks,
heat exchangers, tower tanks, pipelines and other equipment;
5. Ocean engineering: high requirements are placed on the corrosion resistance and
strength of materials. Duplex stainless steel has been widely used
in the field of ocean engineering. It can be used to manufacture
facilities such as ocean platforms, ships, and subsea pipelines.
Among these facilities, duplex stainless steel can effectively
resist the corrosion of seawater, ensuring the service life and
safety of the facilities.
6. Automotive industry: Duplex stainless steel are used in the automotive industry for
exhaust systems and other applications that require high
temperature and corrosion resistance.
Quality Inspection:
Packing & Delivery:
We can pack according to customer's requirements
