Chemical Composition (Weight %) of Duplex 2507 Stainless Steel Pipe

Mechanical Properties of Duplex 2507 Stainless Steel Pipe

Key Features of Duplex 2507 Stainless Steel Pipe

• Excellent Corrosion Resistance: Resistant to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich environments (e.g., seawater, brines).
• High Strength: Twice the yield strength of austenitic stainless steels (e.g., 316L), allowing for thinner wall designs and reduced weight in high-pressure applications.
• Good Toughness: Maintains ductility and impact resistance even at low temperatures.
• Weldability: Can be welded using standard methods (e.g., TIG, MIG) with proper procedure control to preserve duplex microstructure.
• Cost-Effective: Offers a balance of performance and cost compared to higher-nickel alloys (e.g., super austenitic stainless steels).

Standards of Duplex 2507 Stainless Steel Pipe

• ASTM A789 / A789M (Seamless and Welded Ferritic/Austenitic Duplex Stainless Steel Tubing for General Service)
• ASTM A790 / A790M (Seamless and Welded Ferritic/Austenitic Duplex Stainless Steel Pipe for General Service)
• ASME SA789 / SA790
• EN 10216-5 (Welded duplex stainless steel tubes for pressure purposes)
• DIN 17458 (Duplex stainless steel pipes)

Equivalent Grades of Duplex 2507 Stainless Steel Pipe

• UNS S32750
• EN 1.4410
• DIN X2CrNiMoN25-7-4
• JIS SUS 2507

Applications of Duplex 2507 Stainless Steel Pipe

• Oil and gas industry: Offshore drilling equipment, subsea pipelines, and high-pressure wellhead components.
• Chemical processing: Reactors, heat exchangers, and piping handling corrosive chemicals (e.g., acids, chlorides).
• Desalination plants: Seawater intake and reverse osmosis systems.
• Pulp and paper industry: Bleaching systems and processing equipment.
• Power generation: High-pressure boilers and flue gas desulfurization systems.
• Marine engineering: Ship hulls, ballast tanks, and offshore structures.

Export Packaging & Transportation

• Packaging:
  • Pipes are typically bundled with steel straps, wrapped in waterproof plastic film or Hessian cloth to prevent moisture and scratches.
  • For small-diameter tubes, they may be packed in wooden crates or pallets with foam inserts for added protection.
  • Each bundle or crate is labeled with details such as material grade, size, quantity, heat number, and certification (e.g., Mill Test Report).
• Transportation:
  • Shipped by sea in containers (20ft or 40ft) for long-distance international transport.
  • For land transport, trucks or railcars are used, with proper securing to avoid movement during transit.
  • Special handling is provided for large-diameter or heavy-wall pipes to ensure structural integrity.