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astm asme f55 stainless steel pipes  tubes801-0

Duplex Stainless Steel

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ASTM ASME F55 Stainless Steel Pipes & Tubes

Product Description
ASTM/ASME F55 (UNS S32760) Stainless Steel Pipes & Tubes are super duplex grade products conforming to ASTM A790/A928 standards, featuring a tungsten-enhanced composition (24-26% Cr, 6-8% Ni, 3-4% Mo, 0.5-1.0% W, 0.2-0.3% N) for maximum corrosion resistance (PREN ≥40) and mechanical strength (≥550 MPa yield). This advanced alloy delivers superior performance in extreme offshore, chemical, and subsea environments, offering exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich and sour service conditions (NACE MR0175 compliant). The tungsten addition enhances stability in welded conditions and improves resistance to uniform corrosion in acidic media, making F55 particularly suitable for umbilicals, heat exchangers, and process piping in aggressive oil/gas, petrochemical, and marine applications where reliability exceeds standard super duplex capabilities. The balanced ferrite-austenite microstructure ensures optimal toughness and fatigue resistance up to 280°C (536°F), providing engineers with a cost-effective alternative to nickel alloys for critical high-pressure systems exposed to seawater, acids, or H₂S-containing environments.
Specification
Brand Name: BEALL
Place of Origin: Jiangsu, China
Section Shape: Round (or other shape)
Standard: ASTM/ASME/AISI
Delivery Time: 8-14 days
Processing Service: Bending, Welding, Decoiling, Punching, Cutting, Moulding
Outer diameter: 1/2''~60''
Wall Thickness: as your request
Length: 1-12m, as your request
Packaging: seaworthy packing, or as your request
Payment Terms: TT 30% in advance, balance before the shipment.

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