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Duplex & Super Duplex Steel pipes

Duplex Steel,Duplex Steel pipes, Duplex Steel Tubes, Duplex Steel Pipe Fittings, Duplex Steel Forged Fittings, Duplex Steel Flanges, Duplex Steel Round Bar, Duplex Steel Plates, Duplex Steel Fasteners, UNS S32205 Duplex Stainless Steel , UNS S32750 Super Duplex Stainless Steel, UNS S32760 Super Duplex Steel , ZERON 100 , Lean Duplex Steel Plates, UNS S31803 Duplex Steel


Duplex Steel Pipe was originally developed in Sweden back in the 1940’s . Duplex Steel Pipes were originally created to combat corrosion problems caused by chloride-bearing cooling waters and other aggressive chemical process fluids.
Called Duplex Steel Pipe because of its mixed microstructure with about equal proportions of ferrite and austenite, duplex stainless steels are a family of grades, which range in corrosion performance depending on their alloy content. The chemical composition based on high contents of Cr and Mo, improves intergranular and pitting corrosion resistance, respectively. Additions of nitrogen can promote structural hardening by interstitial solid solution mechanism, which raises the yield strength and ultimate strength values without impairing toughness. Moreover, the two-phase microstructure guarantees higher resistance to pitting and stress corrosion cracking in comparison with conventional stainless steels.
The first-generation grades were alloys of chromium, nickel and molybdenum and while they provided good performance characteristics, welds had low toughness due to excessive ferrite, which limited the use of Duplex pipe steel to a few specific applications.

Duplex Steel Seamless Pipe:

Size :
1/2"NB TO 12 "NB IN
Schedule: SCH20, SCH30, SCH40, STD, SCH80
Type : Welded / Fabricated / Seamless
Length : Single Random, Double Random & Cut Length. 
End : Plain End, Beveled End.

MATERIALS :
Duplex Steel Seamless Pipe – Duplex SS Seamless Pipe
ASTM A790 UNS S31803, S32205, S32750, S32760

 

 

 

Duplex Steel Welded Pipe:

Size : 1/2"NB TO 12 "NB IN
Schedule: SCH20, SCH30, SCH40, STD, SCH80
Type : Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form : Round, Square, Rectangular, Hydraulic Etc.
Length : Single Random, Double Random & Cut Length. 
End : Plain End, Beveled End, Treaded. 

MATERIALS :
Duplex Steel Welded Pipe – Duplex SS Welded Pipe
ASTM A790 UNS S31803, S32205, S32750, S32760

 

 

 

Duplex Steel Fabricated Pipe:

Size :
8"NB TO 24 "NB IN
Schedule: SCH20, SCH30, SCH40, STD, SCH80
Type : Welded / Fabricated
Length : Single Random, Double Random & Cut Length. 
End : Plain End, Beveled End.

MATERIALS :
Duplex Steel Fabricated Pipe – Duplex SS Fabricated Pipe
ASTM A790 UNS S31803, S32205, S32750, S32760

 

 

 

 
Duplex Steel Pipes
Duplex Steel Seamless Pipe
Duplex Steel ERW Pipe

 

 
Super Duplex Steel Pipes
Super Duplex Steel Seamless Pipe
Super Duplex Steel ERW Pipe

 

 
2205 Duplex Steel Pipes
2205 Seamless Pipe
2205 ERW Pipe

 

 
2507 Super Duplex Steel Pipes
2507 Seamless Pipe
2507 ERW Pipe

 

 
1.4462 Duplex Steel Pipes
1.4462 Seamless Pipe
1.4462 ERW Pipe

 

 
1.4501 Super Duplex Steel Pipes
1.4501 Seamless Pipe
1.4501 ERW Pipe

 

 
ASTM A790 UNS S31803 Pipes
ASTM A790 UNS S31803 Seamless Pipe
ASTM A790 UNS S31803 ERW Pipe

 

 
ASTM A790 UNS S32205 Pipes
ASTM A790 UNS S32205 Seamless Pipe
ASTM A790 UNS S32205 ERW Pipe

 

 
ASTM A790 UNS S32550 Pipes
ASTM A790 UNS S32550 Seamless Pipe
ASTM A790 UNS S32550 ERW Pipe

 

 
ASTM A790 UNS S32750 Pipes
ASTM A790 UNS S32750 Seamless Pipe
ASTM A790 UNS S32750 ERW Pipe

 

 
ASTM A790 UNS S32760 Pipes
ASTM A790 UNS S32760 Seamless Pipe
ASTM A790 UNS S32760 ERW Pipe

 

 
 
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