Duplex Stainless Steel Pipe

Duplex Steel Seamless Pipe manufacturer and exporter

Duplex Pipe

Duplex Pipe

Duplex Seamless Pipe

Duplex Seamless Pipe

Duplex Welded Pipe

Duplex Welded Pipe

The Duplex Steel Pipe gets its name from the dual nature present in the microstructure of the alloy. Duplex Stainless Steel Seamless Pipe have good mechanical characteristics and can be used in an as welded condition. Considered to be superior in comparison to austenitic alloys ASTM A312 TP304 or ASTM A312 TP316, the Seamless Duplex Pipe offers much better resistance to corrosion.

Duplex Welded Pipe in custom length and sizes

This property is particularly noticed when the Duplex Stainless Steel Pipe has been exposed to environments that contain corrosive compounds that can cause chloride stress corrosion as well as chloride pitting corrosion. The Duplex Welded Pipe also has much higher tensile strength properties as opposed to the standard austenitic stainless steel grades. The Duplex Steel Pipes are almost exclusively used in the offshore oil and gas industry. The lower content of nickel used to alloy Duplex Pipe is why the metal is economical. As one of the foremost distributors and A790 Duplex Pipe manufacturer, we supply good quality products to our buyers. You can find the Duplex Pipe Price List here.

Duplex Stainless Steel Pipe sizes

Duplex Stainless Steel Seamless Pipe

  • Size: 4 - 219mm
  • Thickness : 0.5 - 20mm
  • Length: Single, Double Random & Cut Length

Duplex Steel Welded Pipe

  • Size: 5.0 - 1219.2 mm
  • Thickness : 0.5 - 20mm
  • Length: Single, Double Random & Cut Length

ASTM A789 Steel Pipe Specification

Check recently updated Duplex Pipe Price List

Standard Specification ASTM A790 ASME SA790, F51
Manufacturing Type Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded
Thickness Range SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS
Standard SUS, JIS, AISI, ASTM, GB, DIN, EN
Value Added Services
  • Cutting
  • Beveling
  • Threading
  • Destructive and Non Destructive
  • Ultrasonic Testing
  • Draw & Expansion as per required Size & Length
END Plain End, Beveled End, Treaded ASTM A790 DSS Pipe
Marking
  • Specification
  • Material Grade
  • Nominal Size
  • Schedule or Wall Thickness
  • Method of Manufacturing (Seamless / Welded)
  • Heat Number
  • Manufacturer’s Name or Custom Logo - on request
Test Certificate
  • Third Party Inspection (TPI)
  • Moisture testing
  • Manufacturer Test Certificate
  • Fumigation Certificates
  • 100% Radiography Test Report
  • DFARS compliant
  • EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
  • Laboratory Test Certificate from Govt. Approved Lab
  • Raw Materials Certificate
  • HS Code Commercial Invoice
  • Heat Treatment Charts
  • Surface roughness measurement
  • Form A for Generalized System of Preferences (GSP)
Packaging Packed in PE Fabric Bundles or ply wooden box wrapped in plastic or Standard seaworthy export packing or as per customers' request
Port Mumbai, India
Why choose Oshwin?
  • Lowest price
  • Better price stability
  • Higher strength leading to weight saving
  • High corrosion resistance particularly stress corrosion cracking

Most famous types of Duplex Steel Pipe

Duplex Stainless Steel Seamless Pipe

Duplex Stainless Steel Seamless Pipe

ASTM A789 Duplex Welded Pipe

ASTM A789 Duplex Welded Pipe

ASTM A790 DSS Pipe roughness

Outside surface roughnes Inside surface roughness
RA 20 defect level max. 50 μm RA 20 defect level max. 20 μm

Duplex Stainless Pipe Chemical Composition

Material Composition % (Approx)
Cr Ni Mo N Mn W Cu
2101 LDX 21.5 1.5 0.3 0.22 5 - -
DX2202 23 2.5 0.3 0.2 1.5 - -
RDN 903 20 1.8 0.2 0.11 4.2 - -
2304 23 4.8 0.3 0.10 - - -
2205 22 5.7 3.1 0.17 - - -
2507 25 7 4 0.27 - - -
Zeron 100 25 7 3.2 0.25 - 0.7 0.7
Ferrinox
255/
Uranus 2507Cu
25 6.5 3.5 0.25 - - 1.5

Features & Benefits

  • More hard to machine and form than austenitics material
  • Double design strength of austenitic and ferritic stainless steels
  • Weldable with extra care in thick material
  • Temperature limit 300 °C maximum
  • Better toughness down to minus 80 °C but not suitable for cryogenic applications
  • Various range of corrosion resistance to match application
  • Best for resistance to stress corrosion cracking

Stainless Steel Duplex Equivalent

Grades EN (WNR.) / UNS No Type
LDX 2101 Pipe 1.4162/ S32101 Lean
DX2202 1.4062/ S32202 Lean
RDN 903 1.4482/ S32001 Lean
LDX 2304

1.4362/ S32304

Lean
2205 Pipe 1.4462/ S31803/ S32205 Standard
2507 Pipe 1.4410/ S32750 Super
Zeron 100 Pipe 1.4501/ S32760 Super
Ferrinox 255/ Uranus 2507Cu Pipe 1.4507/ S32520/ S32550 Super
Ferralium 255 Pipe 1.4501/ UNS S32760 Super
Hyper 1.4658/ S32707 / S33207 HDSS