• slider
  • slider
  • slider

Duplex & Super Duplex Pipes & Tubes

Duplex Steel UNS S31803 Seamless Pips Manufacturer, UNS S32205 Pipes, Duplex Welded Tubes Exporter.

Simplex Fittings is one of India’s leading manufacturers of high quality Duplex and Super Duplex Steel Pipes and Tubes as per international standard quality of raw materials which find application all over different sectors.

Duplex Steel Pipes and Tubes are called as “duplex”, for the reason that they have a two-segment microstructure that consists of grains of austenitic and ferritic steel. When Duplex steel is being melted it hardens from the liquid segment to a totally ferritic formation. As the material gets cool down to room temperature, approximately half of the ferritic grains make over to austenitic grains (“islands”). Well, the outcome is a microstructure of approximately 50 percent of austenite and 50 percent of ferrite. Super Duplex Steels are roughly twice as powerful as standard austenitic or ferritic steels.

Duplex Steel Seamless Pipes
Duplex Steel Seamless Pipes
Duplex Steel Seamless Tubes
Duplex Steel Seamless Tubes
Super Duplex Steel Welded Pipes
Super Duplex Steel Welded Pipes
Super Duplex Steel Welded Tubes
Super Duplex Welded Tubes

They have considerably better ductility and toughness than ferritic grades; however, they do not accomplish the exceptional values of austenitic grades. Our Duplex Pipes Tubes and Super Duplex Pipes Tubes are available in customized length, sizes and shapes at market leading prices.

ASTM A790 Rectangular Pipes Manufacturer, DIN 1.4410 Welded Pipe, UNS S32950, S32750 ERW Pipes Exporter.

ASTM A790 Duplex & Super Duplex Pipes & Tubes Specification

Specification : ASTM A790 / ASME SA790, ASTM A789 / ASME SA A789
Dimensions : ASTM, ASME and API
Seamless Pipes & Tubes Sizes : 1/2” NB - 8” NB
Welded Pipes & Tubes Sizes : 6” NB - 24” NB
Outer Diameter : 6.00 mm OD up to 250 mm OD, Sizes up to 12” NB
Thickness : 0.5-45mm
Length : Single Random, Double Random & Required Length
Form : Round, Square, Rectangular, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
Types : Seamless / ERW / Welded / Fabricated / CDW
Grades : UNS S31803, S32205, S32750, S32760, S32950

Chemical Composition

Cr Mo Mn Si C N S P Fe
4.5 22.0 3.0 - - - 0.14 - -
6.5 23.0 3.5 2.0 1.0 0.03 0.2 0.02 0.03

Mechanical properties

Proof Stress
0.2% (MPa)
Tensile Strength
Hardness Max
550 795 15 310 32*

Other Products of Duplex & Super Duplex Pipes & Tubes
Duplex Steel Seamless Pipes Super Duplex Steel Welded Tubes
ASTM A790 Super Duplex Steel Seamless Tubes Suppliers Duplex Steel Seamless Pipes & Tubes
AISI UNS S31803 ERW Pipes A790 Super Duplex Steel ERW Tubes
UNS S32205 Welded Pipes ASTM A790 Duplex Steel EFW Tubes
UNS S32950 Seamless Pipes ASTM A790 UNS S32750 Welded Pipes
Super Duplex Steel Rectangular Pipes Duplex Steel Rectangular Tubes
A790 Super Duplex Steel Pipes & Tubes A790 Duplex Steel Seamless Tubes


Our Export Market

Central/South America North America
Asia Mid East/Africa
Eastern Europe UAE


Our Export Countries

Sri Lanka Bahrain
Russia Egypt
Portugal Turkey
Spain Singapore
Brazil Thailand
Chile Malaysia
Venezuela Indonesia
Costa Rica Poland
USA, U.A.E Italy
Oman Canada
Saudi Arabia Angola
Back to Top