ASTM A789 Duplex Steel (UNS S31803) Pipes and Tubes are a type of duplex stainless steel known for their excellent combination of strength, corrosion resistance, and cost-effectiveness. Duplex stainless steels have a two-phase microstructure consisting of both austenite and ferrite, which imparts unique properties to the material.

One of the key features of ASTM A182 Duplex Steel F51 pipes is their high strength. They offer superior mechanical properties compared to conventional austenitic stainless steels, making them suitable for applications where high strength and toughness are required.

ASTM A182 Duplex Steel F51 tubes exhibit excellent corrosion resistance. They are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, making them ideal for use in aggressive environments, such as seawater, chemical processing, and petrochemical applications.

The chemical composition of ASTM A182 Duplex Steel UNS S31803 Pipes typically includes approximately 21-23% chromium, 4.5-6.5% nickel, 2.5-3.5% molybdenum, 0.08-0.20% nitrogen, and small amounts of other elements like manganese, silicon, phosphorus, sulfur, and carbon. The presence of these elements contributes to the alloy's excellent corrosion resistance and mechanical properties.

Duplex Seel S31803 Pipes & Tubes

Machining ASTM A182 Duplex Steel UNS S31803 tubes can be more challenging than machining conventional stainless steels due to their higher strength and work hardening characteristics. Specialized cutting tools, rigid setups, and appropriate cooling are required to achieve precise fabrication.

Bhansali Enterprises Specifications Of Duplex Steel 31803 Pipes and Tubes

Pipe Standard ASTM A789 ASME SA789 / ASTM A790 ASME SA790
Tube Specifications ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554
Pipe Dimension ANSI/ASME B36.19M, ANSI/ASME B36.10M
Seamless Pipe Sizes 1 / 2" NB - 16" NB
Welded Pipe Sizes 1 / 2" NB - 24" NB
EFW Pipe Size 6" NB - 24" NB
Seamless Tube Sizes 1 / 2" NB - 16" NB
Welded Tube Sizes 1 / 2" NB - 24" NB
Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Manufacturing Process Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Pipe Shapes Hydraulic, Round, Rectangle, Square, Hex, Honed
Pipe Shapes Hydraulic, Round, Rectangle, Square, Hex, Honed
Schedule SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Outside Finish 2B, No.4, No.1, No.8 Mirror Finish for Duplex Steel Pipes, Finish as per customer Requirements
Length Single Random, Double Random, Standard & Cut length
End Types Plain Ends (PE) Threaded Ends (TE) Bevelled Ends (BW) Grooved Mechanical Joints or Grooved Ends, TBE (Treaded Both Ends)
Form Round, Square, Hollow, Rectangular, Instrumentation, High Pressure, Cold Rolled Coiled, Electropolish, Heat exchanger, Sanitary etc.

LogoASME SA789 31803 Duplex Steel Pipe & Tube Equivalent Grades

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S31803 1.4462 S31803 4462-318-03-I

LogoChemical Composition of Duplex Steel 31803 Pipes and Tubes

UNS Designation Type Composition, % B
C Mn P S Si Cr Ni N Mo Other Elements C
S31803 . . . 0.030 2.00 0.030 0.020 1.00 21.0-23.0 4.5-6.5 0.08-0.20 2.5-3.5 . . .

LogoMechanical Properties of DSS 31803 Pipes & Tubes

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UNS Designation Type Condition Tensile Strength, min, ksi [MPa] Yield Strength,A min, ksi [MPa] Elongation in 2 in. [50 mm] or 4D, min, % Reduction of Area, min, %B,C Brinell Hardness, max
S31803 . . . annealed 90 [620] 65 [450] 25 . . . 290

Bhansali Enterprises Available Variations in Duplex Steel 329LL Pipes & Tubes

Duplex Steel 31803 Seamless Pipe

Seamless Pipes

DSS 31803 Seamless Pipe

Duplex Steel 329LL Welded Pipes

Welded Pipe

Duplex 329LL Welded Pipe

Duplex Steel Uranus 45N ERW Pipe

ERW Pipe

DSS Uranus 45N ERW Pipe

Duplex Steel UNS S31803 EFW Pipe

EFW Pipe

Duplex Steel UNS S31803 EFW Pipe

Duplex Steel 31803 Polished Pipe

Polished Pipe

DSS 31803 Polished Pipe

Duplex 31803 Seamless Tubes

Seamless Tubes

Duplex 31803 Seamless Tubes

Duplex Steel 329LL Welded Tube

Welded Tube

Duplex Steel 329LL Welded Tube

Duplex Steel 31803 ERW Tube

ERW Tube

Duplex Steel 31803 ERW Tube

Duplex Steel Uranus 45N Electropolished Tube

Electropolished Tube

DSS Uranus 45N Electropolished Tube

Bhansali EnterprisesOther Types Of Duplex Steel Uranus 45N Pipe & Tube

  • Duplex 1.4462 Seamless Pipe
  • Duplex 329LL Rectangular Pipes
  • UNS S31803 Schedule 80 Pipe
  • WNR 1.4462 Industrial Pipes
  • ASME SA790 329LL Duplex Steel Pipe
  • ASTM A790 DSS 31803 Welded Pipe
  • Duplex Steel 31803 Hollow Pipe
  • DSS 329LL Dairy Pipe
  • Duplex Steel 329LL Round Pipe
  • ASTM A790 Duplex Steel 31803 ERW Pipes
  • ASTM A790 DSS 31803 Electric Fusion Welding Pipe
  • ASTM A790 DSS 31803 Piping
  • Duplex Steel 45N Uranus Square Pipe
  • Duplex 31803 Electric Resistance Welded Pipe
  • 31803 Duplex Steel Schedule 40 Pipe
  • DSS Uranus 45N Electropolished Pipes
  • Duplex 31803 Large Diameter Pipe
  • Duplex Steel 1.4462 Round Pipe
  • Duplex Steel 1.4462 Tube
  • UNS S31803 Round Tube
  • Duplex Steel 31803 Welded Tube
  • DSS 1.4462 Rectangular Tubes
  • DSS Uranus 45N Polished Tube
  • 1.4462 Square Tube
  • DSS 31803 Electric Resistance Welded Tubes
  • ASME SA789 DSS 31803 ERW Tubes
  • Duplex Steel 31803 ERW Tube
  • Steel 31803 Industrial Tubes
  • Duplex Steel 329LL Hydraulic Tube
  • Duplex Steel 31803 Oval Tube
  • ASME SA789 DSS 31803 Welded Tubes
  • Duplex 329LL Instrumentation Tubing
  • ASME SA 789 DSS 31803 Seamless Tubes
  • UNS S31803 U Shaped tube
  • DSS 31803 Sanitary Tubing Stock
  • 31803 Duplex Steel Spiral Welded Tube

Bhansali EnterprisesDuplex Steel 31803 Pipes and Tubes Technical Data

Bhansali EnterprisesDuplex Steel 31803 Pipes & Tubing Industrial Application

ASTM A182 Duplex Steel F51 / UNS S31803 pipes and tubes find applications in various industries where a combination of high strength, corrosion resistance, and cost-effectiveness is essential. In the oil and gas industry, they are used for pipelines, flowlines, and structural components due to their resistance to chloride-induced corrosion and hydrogen sulfide environments. In chemical processing, these duplex stainless steels are employed for equipment such as heat exchangers, reactors, and pressure vessels, taking advantage of their resistance to various aggressive chemicals. They are also used in desalination plants, pulp and paper industry, and food processing, where their corrosion resistance and mechanical properties are valued.

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  • Oil & Gas Industry

  • Power Plant Generation

  • Marine Industry

  • Petrochemical Industry

  • Chemical Industry

  • Aerospace Industry

  • Sugar Industry

Bhansali EnterprisesDuplex Steel UNS 31803 Pipes & Tubes Price Details

Prices for DSS 31803 Pipes and Tubes Products are very affordable. Please click on the request a quote button or Click Here to request the updated price list and ready stock information along with your requirement. Bhansali Enterprise DSS 31803 maintains a stock of all standard items and can export them at the best price ASME SA789 31803 Duplex Steel Seamless Pipe, Welded Tube, Seamless Tube, Welded Pipe, Round Pipe, Polished Tube, ERW Pipe, ERW Tube etc.

Bhansali EnterprisesWe Supply Duplex Steel 31803 Pipes & Tubes in the following Cities & Countries

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