Duplex Steel Welded Pipe

Short Description:

Type: Duplex Steel Welded Pipe, Duplex Steel Welded Tube
Spec.: Outer Diameter: 6.0-630mm. Thickness: 0.5-45mm
Standard: ASTM A790, A789, A815 / ASME SA790, SA789, SA815
Grade: UNS S31803, UNS S32205
End: Plain End, Beveled End, Treaded
Packing: Waterproof paper wrapped, Packed in wooden cabins.

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Manufacturing Process


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Duplex Steel Welded Pipe Details

What is a Duplex Steel Welded Pipe?

Duplex steel welded pipes are made of two different types of stainless steel, which are also known as austenitic and ferritic steel. Duplex steel is a combination of both types of steel which gives it a higher strength, corrosion resistance, and better weldability than either of the two types of steel alone. Duplex steel welded pipes are used in many industries including the chemical, petrochemical, marine, and food processing industries. They are used in a variety of applications including pipelines, pressure vessels, boilers, tanks, and condensers. Duplex steel welded pipes are also used in the construction industry for a variety of purposes such as structural frames, piping systems, and for other general fabrication purposes.

Duplex Steel Welded Pipe & Tube Standards, Specification & Grades

Standard ASTM A790, A789, A815 / ASME SA790, SA789, SA815
Grades UNS S31803, UNS S32205
Dimensions ASTM, ASME and API
Size 1/2″NB TO 12 “NB IN
Thickness 0.5-45mm
Outer Diameter 6.0-630mm
Specialized in Large Diameter Size
Schedule SCH20, SCH30, SCH40, STD, SCH80
Type Welded
Length Single Random, Double Random & Cut Length
Form Round, Square, Rectangular, hydraulic etc.
End Plain End, Beveled End, Treaded

Duplex Steel Welded Pipe Dimension Chart

Pipe Types Out diameter Wall thickness Length
NB Sizes (in stock) 1/8” ~ 8” SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 Upto 6 Meters
Welded Pipe (in Stock + Custom Sizes) 5.0mm ~ 1219.2mm 1.0 ~ 15.0 mm Upto 6 Meters

Duplex Steel Welded Tube Dimension Chart

Tube Types Out diameter Sizes Length
NB Sizes (in stock) .0035” ~ 8” 1/8″, 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 1″, 1.25″, 1.5″, 2″, 2.5″, 3″, 4″, 5″, 6″ Cut to length
Welded Tube (ERW Tube) (in Stock + Custom Sizes) 6.35 mm OD To 152 mm OD As per requirement Cut to length

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  • Manufacturing Process of Duplex Steel Welded Pipe

    manufacturing process

    Application of Duplex Steel Welded Pipe

    1. Chemical processing, transport and storage
    2. Oil and gas exploration and offshore rigs
    3. Oil and gas refining
    4. Marine environments
    5. Pollution control equipment
    6. Pulp & paper manufacturing
    7. Chemical process plant