GOST Annealing Chimney Duplex Seamless Pipe UNS31803 13.7-457.2mm OD 2.11-23.83mm WT Corrosion Resistant
Price:
Above 2usd/kg
MOQ:
1pc
Delivery Time:
2 weeks/container
Brand:
SMLSCO
Product Description
UNS31803 is a duplex stainless steel featuring a balanced 50% ferrite and 50% austenite microstructure. This unique dual-phase structure provides exceptional corrosion resistance combined with superior mechanical properties. The seamless construction ensures uniform structure and enhanced performance for demanding industrial applications.
Product Specifications
Grade: S31803
Standard: ASTM A790
Size Range: OD 13.7-457.2mm, WT 2.11-23.83mm
Length Options: 6M, 12M, 5-7M random length, custom lengths available
Manufacturing Process: Cold drawn, cold rolled
End Types: PE/BE
Packaging: Woven bags or custom packaging
Chemical Composition
| Element | Content (%) |
|---|---|
| C | 0.03 |
| Si | 1.00 |
| Mn | 2.00 |
| P | 0.03 |
| S | 0.02 |
| Cr | 21.0-23.0 |
| Ni | 4.5-6.5 |
| Mo | 2.5-3.5 |
| N | 0.08-0.2 |
Key Performance Advantages
High Strength & Pressure Resistance
Combines ferritic and austenitic stainless steel advantages for superior strength and pressure resistance in high-pressure applications.
Excellent Corrosion Resistance
Superior resistance to stress corrosion cracking in chloride environments, effectively resisting seawater and acidic chemicals to extend equipment lifespan.
Enhanced Toughness & Ductility
Maintains excellent toughness and ductility across both low and high temperature ranges, ensuring stable performance under varying conditions.
Superior Welding Performance
Can be welded without preheating or post-heat treatment, with minimal performance changes after welding for reliable joint quality.
Wear & Fatigue Resistance
High resistance to wear and fatigue maintains stable performance under long-term operational loads for extended service life.
Packaging & Delivery
Standard packaging in woven bags with custom options available. Shipping from Shanghai/Ningbo ports.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Zhejiang Seamless Pipe Co., Ltd.
Location
No. 501, Changsheng South Road, Jiaxing, Zhejiang, China
Contact Person
Lee