Duplex Steel
Duplex Steel were originally created to combat corrosion problems caused by chloride-bearing cooling waters and other aggressive chemical process fluids.
Called Duplex 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.
Available forms are Duplex Steel Pipes & Tubes, Duplex Steel Round Bars, Duplex Steel Fasteners, Duplex Steel Sheet, Duplex Steel Plate, Duplex Steel Forged Fittings, Duplex Steel Valves, Duplex Steel pipe fittings, Duplex Steel flanges.
Specification
Duplex Steel Angles
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A276/ASME SA276 EN, BS, GB, DIN, JIS, etc
Size Range :
5mm to 9mm
Length(mm)
3MTR, 4MTR, 5MTR, 6MTR, or Custom Cut Sizes
Thickness
3.0mm – 120mm
Width
25-100
Types
Stuctural Steel Angle, Bars, Equal, Unequal, L, T, Hot Rolled
Duplex Steel Sheets
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A240 / ASME SA240
Dimensions :
ASTM, ASME, and API
Width :
1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Thickness :
4mm-100mm
Length :
2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface Finish :
2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, embossed, hairline, sand blast, Brush, etching, Hot rolled Sheets (HR), Cold rolled sheet (CR), SATIN (Met with Plastic Coated) etc
Hardness :
Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Form :
Plain Sheet, Shim Sheet, Perforated Sheet
Duplex Steel Plates
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A240 / ASME SA240
Dimensions :
ASTM, ASME, and API
Width :
1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Thickness :
4mm-100mm
Length :
2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface Finish :
2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, chequered, hairline, sand blast, Brush, etching, Hot rolled Plate (HR), Cold rolled Plates (CR), SATIN (Met with Plastic Coated) etc
Hardness :
Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Form :
Chequered Plate
Duplex Steel Flanges
Grades :
S31803 / S32205 (2205)
Specifications :
ASTM A182 / ASME SA182.
Dimensions :
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard :
ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size :
1/2" (15 NB) to 48" (1200NB)
Class/Pressure :
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type :
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Form :
Slip on flanges, Socket weld flanges, Forged flanges, Blind flanges, Welding neck flange, Ring type joint flange, Spectacle blind flange, Reducing flange, Threaded / Screwed flange, Tongue and Groove flange, Long weld neck flange, Plate flange, ASME B16.5 flange
Duplex Steel Flat Bars
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A276/ASME SA276
Size Range :
3.17mm to 350mm dia
Length(mm)
2 meters - 7 meters ( 8 feet to 24 feet)
Thickness
2mm~100mm
Types
Duplex Flat Bars, Duplex Steel Flat Bars
Duplex Steel Pipe Fittings
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A815 / ASME SA815
Dimensions :
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size :
1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type :
Seamless / Welded / Fabricated
Schedule :
Sch 5 TO Sch XXS.
Bending Radius :
R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness :
Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Duplex Steel Pipes
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A790, A358 / ASME SA790, SA358
Seamless Size :
1/2″ NB – 16″ NB
ERW Size :
1/2″ NB – 24″ NB
EFW Size :
6″ NB – 100″ NB
Outside Diameter :
6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available
Length :
Single Random, Double Random & Required Length
Thickness :
0.3mm – 50 mm
Schedule :
SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXS
Type :
Seamless, Welded, ERW, EFW
Form :
Round Pipes, Square Pipes, Rectangular Pipe
End :
Plain End, Beveled End, Treaded
Duplex Steel Channels
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A276/ASME SA276
Size Range :
40mm*20mm~300mm*300mm
Thickness
3.0mm – 120mm
Length
3MTR, 4MTR, 5MTR, 6MTR, or Custom Cut Sizes
Types
Structural Steel U, C, Miscellaneous Channels, Hot Rolled Channel
Duplex Steel Round Bars
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A276/ASME SA276
Size Range :
(Ro)Dia 6 - 350mm, (Hex) 6-75mm, (SQ) 4 -100mm
Thickness
5 mm To 500 mm thick in 100 mm TO 6000 mm.
Types
Round, Square, Recatangle, Hexagonal, Round Threaded
Duplex Steel T Beams
Grades :
S31803 / S32205 (2205)
Standard :
ASTM A276/ASME SA276
Size Range :
3″ thru 12.31″
Thickness
3.0mm – 120mm
Length
3MTR, 4MTR, 5MTR, 6MTR, or Custom Cut Sizes
Types
T Beams, Hot Rolled T Beams