UNS S31803 Duplex Stainless Steel Seamless Pipe for Oil and Gas, Chemical Processing, Marine Engineering and Industrial Applications

ASTM A790 UNS S31803 2205 Duplex Stainless Steel Seamless Pipe

UNS S31803 Duplex Stainless Steel Seamless Pipe (2205) is a high-strength stainless steel product with excellent corrosion resistance. Featuring a balanced austenitic-ferritic microstructure, it offers outstanding mechanical strength, pitting resistance, crevice corrosion resistance, and resistance to chloride stress corrosion cracking. It is widely used in oil and gas, petrochemical, marine engineering, seawater desalination, shipbuilding, heat exchangers, pressure vessels, and industrial fluid transportation systems, especially in demanding and corrosive environments.

Key Features and Advantages

• Excellent mechanical strength and load-bearing capacity.

• Excellent resistance to pitting and crevice corrosion.

• Good resistance to chloride-induced stress corrosion cracking.

• Suitable for various welding processes with proper procedures.

• Reliable performance in demanding industrial environments.

• Long service life and reduced maintenance costs.

Typical Applications

• Oil pipelines, gas processing and offshore platforms.

• Chemical processing equipment and corrosive fluid pipelines.

• Seawater piping, offshore equipment and shipbuilding.

• Desalination plants and seawater treatment systems.

• Heat exchangers, condensers and cooling systems.

• Pulp processing and chemical recovery equipment.
• Power plant equipment and industrial piping systems.

Technical Specifications

• Product Name: UNS S31803 Duplex Stainless Steel Seamless Pipe

• Material Designation: UNS S31803

• Material No.: W.Nr. 1.4462

• Alloy Family: Duplex Stainless Steel

• Product Form: Seamless Pipe / Tube

• Reference Standard: ASTM A790, ASTM A789, subject to confirmation

• OD & WT: Available according to customer drawing & schedule

• Length: Random or fixed cut lengths

• Surface: Hot finished / Cold drawn bright

• Inspection: MTC 3.1 / 3.2, UT, hydrotest, PMI optional

Quality Assurance

Products can be supplied according to agreed specifications, with chemical composition verification, mechanical testing, hardness check, hydrostatic test, NDT and material traceability where required.

Material certificates and additional inspection documentation are available according to the purchase order and applicable product requirements.

Contact our sales team today for a competitive quote, technical datasheet, or to discuss your custom forging requirements.