Duplex 2205 Pipe Specifications

The following table notes the specifications of Duplex 2205 Pipes. ASTM A790 / ASME SA-790 covers seamless and welded duplex 2205 pipe without filler metal. Welded pipe with filler metal falls under ASTM A928 / ASME SA-928. Dimensions follow ASME B36.19M.

Parameter Details
Primary Standard ASTM A790 / ASME SA-790
Welded (with filler) ASTM A928 / ASME SA-928
General Requirements ASTM A999 / ASME SA-999
Dimensional Standard ASME B36.19M
End Types Plain End, Bevelled End, Threaded End
Forms Seamless, Welded (autogenous), Welded (with filler), ERW

Duplex 2205 Pipe Sizes

Available dimensions for duplex 2205 pipe depend on the manufacturing method.

Parameter Seamless Pipe Welded Pipe
OD Range 1/2" to 12" NPS (4 to 219 mm) 4" to 24"+ NPS (5.0 to 1219.2 mm)
Wall Thickness 0.5 to 20 mm 0.5 to 20 mm
Schedules Sch 5S, 10S, 40S, 80S, 160, XXS Sch 10S, 20S, 40S, 80S
Length Single Random, Double Random, Cut Length Single Random, Double Random, Cut Length
Dimensional Standard ASME B36.19M ASME B36.19M

Duplex 2205 Pipe Price

Duplex 2205 seamless pipe costs about ₹600-850/kg in India and $8-15/kg internationally. Welded pipe is priced lower than seamless. Heavier schedules and larger diameters affect the final rate. Price varies with size, wall thickness, schedule, quantity, and how it’s made. Prices shift with nickel and molybdenum market rates.

Contact us with your requirements for accurate pricing.

Duplex 2205 Pipe Chemical Composition

The chemical composition of duplex 2205 pipe is defined under ASTM A790 (UNS S32205). High chromium, molybdenum, and nitrogen levels are what give this grade its corrosion resistance.

Carbon C
0.030 max
Manganese Mn
2.00 max
Phosphorus P
0.030 max
Sulfur S
0.020 max
Silicon Si
1.00 max
Chromium Cr
22.0 to 23.0
Nickel Ni
4.5 to 6.5
Molybdenum Mo
3.0 to 3.5
Nitrogen N
0.14 to 0.20

Duplex 2205 Pipe Mechanical Properties

Duplex 2205 pipe offers significantly higher tensile and yield strength compared to standard austenitic grades, making it suitable for high-pressure and structurally demanding applications.

620 / 90
MPa (min)
Tensile Strength
450 / 65
MPa (min)
Yield Strength
25%
(min)
Elongation
Property Value
Tensile Strength (min) 90 ksi (620 MPa)
Yield Strength (min) 65 ksi (450 MPa)
Elongation (min) 25%
Request a Quote for Duplex 2205 Pipe Request a Quote

Equivalent Designations of Duplex 2205 pipes

International designations equivalent to Duplex 2205 pipe, across major standards, are listed below.

Standard Designation
UNS S32205 / S31803
ASTM A790 / A928
ASME SA790 / SA928
EN X2CrNiMoN22-5-3
DIN 1.4462
ISO 15156
AFNOR Z2CND22-05Az
JIS SUS 329J3L

Duplex 2205 Pipe Industrial Applications

DSS 2205 pipe finds use across 4 primary sectors: oil and gas, chemical processing, desalination/water treatment and pulp and paper.

Oil & Gas Industry

Subsea and topside process pipelines use Duplex 2205 pipe because it resists H₂S and chloride-rich fluids. It is typically qualified to NACE MR0175 standards.

Chemical Processing

Process piping handling sulphuric acid and phosphoric acid benefits from the alloy's pitting resistance. A PREN of approximately 35 provides reliable performance in chloride-containing streams.

Desalination & Water Treatment

Seawater intake lines and brine recirculation piping operate in high-chloride conditions. The 22Cr duplex composition resists pitting and crevice corrosion below 315°C.

Pulp & Paper Industry

Digesters and bleach plant washers run hot chloride solutions through the pipes. 2205 duplex pipe resists corrosion fatigue in these conditions better than standard austenitic stainless steels.

Duplex 2205 Pipe vs 316 Stainless Steel Pipe

Procurement teams often weigh Duplex 2205 against 316L stainless steel pipe before placing orders.

Parameter Duplex 2205 Pipe 316L Stainless Steel Pipe
Yield Strength (min) 65 ksi (450 MPa) 25 ksi (170 MPa)
Tensile Strength (min) 90 ksi (620 MPa) 70 ksi (485 MPa)
PREN ~35 ~24
Chloride SCC Resistance High Low to moderate
Maximum Service Temp 600°F (315°C) 1500°F (815°C)
Relative Cost Higher per kg Lower per kg

Higher yield strength allows thinner wall thicknesses, offsetting the per-kilogram cost premium. 316L isn't suitable where chloride stress corrosion cracking is a concern.

Shipping & Packaging

Main export packaging setup Heavy-duty wooden boxes Packing
Export Packaging Standard

We strictly follow seaworthy export handling standards to protect duplex 2205 pipe from transit damage, moisture ingress, and surface contamination during long-distance dispatch.

  • Heavy-duty wooden boxes with moisture barrier lining
  • HDPE stretch film wrapping on all bundles
  • Plastic end caps on threaded and plain-end pipes
  • Silica gel desiccants to minimize moisture exposure
  • ISPM-15 fumigated wooden packaging for export
shipping preparation Pipe Bundle Yard Staging
Shipping packaging Container End-Cap Protection
Shipping stock Wrapped Export-Ready Bundles

We Export Worldwide

Sachiya Steel International supplies duplex steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.

  • USA flagUSA
  • Canada flagCanada

Frequently Asked Questions:

What standard covers Duplex 2205 Pipe? +
ASTM A790 / ASME SA-790 covers seamless and welded duplex 2205 pipe. Welded pipe with filler metal falls under ASTM A928 / ASME SA-928. UNS S32205 is the current designation; S31803 is the original.
What sizes are available for Duplex 2205 Pipe? +
Seamless pipe ranges from 1/2" to 12" NPS. Welded pipe extends from 4" to 24"+ NPS. Standard schedules include Sch 5S, 10S, 40S, 80S, 160 and XXS for seamless construction.
What is the pressure rating of Duplex 2205 Pipe? +
The pressure rating depends on the pipe’s size, wall thickness (schedule), and operating temperature. Because Duplex 2205 has a minimum yield strength of 65 ksi, it can handle higher pressure.
What is the difference between Duplex 2205 Seamless and Welded Pipe? +
Seamless pipe is made from a single solid piece with no weld, and it is well-suited for high-pressure applications. Welded pipe is made from steel plate and becomes more cost-effective in sizes above 4" NPS. When produced without filler metal, both seamless and welded pipes comply with ASTM A790 requirements.
How is Duplex 2205 Pipe welded? +
Fabricators use E2209 or ER2209 filler metals with controlled heat input to maintain the austenite-ferrite balance. Solution annealing follows per ASTM A790.
What is Duplex 2205 Pipe price per kg? +
Pricing starts from approximately ₹600/kg for seamless pipe in standard sizes. Contact us for a current quotation.
What is the weight of Duplex 2205 Pipe per metre? +
Duplex 2205 has a density of 7.8 g/cm³. A 2" Sch 40S pipe weighs approximately 5.44 kg/m.
What is Duplex 2205 Pipe used for? +
Oil and gas processing, chemical plants, desalination facilities, pulp and paper mills are the primary applications.

Contact Us for Availability and Delivery Request a Quote