Leading Duplex Stainless Steel Seamless Pipe Manufacturers in China
Duplex stainless steel seamless pipes are produced by combining features of both austenitic and ferritic stainless steels. Such pipes arise from extrusion or piercing and are devoid of welds, thus increasing their dependability and endurance. In extreme conditions like those experienced in oil and gas, chemical processing, and marine systems, duplex seamless pipes are particularly beneficial due to their reliable perforamnce tempered with harsh conditions.
Specifications for Duplex Stainless Steel Seamless Pipe
The Duplex Stainless Steel Seamless Pipe’s performance with high-strength, dual-phase stainless steel is exceptionally superb. It's seamless construction offers extraordinary corrosion resistance and reliability.
| Category | Details |
|---|---|
| Characteristics | Low-carbon (≤0.03%) 18/8 austenitic stainless steel; excellent toughness, ductility, and weldability. |
| Surface Treatment | Mill finish (annealed/pickled); optional polished (180-320 grit), brushed, or electropolished. |
| Dimensions and Specs | OD: ⅛”–24”; Thickness: Sch 5S–XXS; Length: 6m or custom; meets ASTM A312, ASME SA312. |
| Corrosion Resistance | Resists atmospheric corrosion, acids, potable water (200 mg/L chlorides); weak in warm chloride environments. |
| Mechanical Properties | Yield: ≥170 MPa; Tensile: ≥485 MPa; Elongation: ≥35%; Hardness: ≤92 HRB; tough at low temps. |
| Processability | Highly formable/weldable (no post-weld annealing); moderately machinable; seamless via extrusion. |
| Applications | Food processing, chemical piping, construction, heat exchangers; not for high chloride/high-temp use. |
| Standards | ASTM A312, A213, A269; ASME SA312, SA213; UNS S30403; DIN 1.4306/1.4307. |
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Choose Duplex Stainless Steel Seamless Pipe You Can Trust
Boost your toughest projects with Duplex Stainless Steel Seamless Pipe! Offering unmatched strength and corrosion resistance, it’s perfect for oil & gas, marine, and chemical applications. Contact us now to explore ASTM A790-compliant options and secure your supply today!
