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Duplex Pipe

A duplex grade is a microstructure consisting of austenitic and ferritic grades. A Duplex Pipe is designed with a superior chemical concentration containing nickel, chromium, molybdenum, and other constituents. This gives the Duplex 2205 Pipe superior resistance to corrosive and oxidative media across stress-induced environments. These pipes also showcase enhanced resistance to pitting by acids and crevice corrosion. The Duplex Stainless Steel Pipe exhibits twice the strength of normal steel grades. These pipes work well in temperatures ranging from -50 degrees F up to 600 degrees F in the system. A 2205 Stainless Steel Pipe possesses superior strength and offers good weldability and workability across different systems. These piping grades have a lower thermal expansion area and are generally annealed at temperatures of 1900 degrees F.

Duplex Stainless Steel Tube is designed to possess superior mechanical and physical properties. These tubes possess a density of 7.82 kg/m3 and have an elastic modulus of 190Gpa. The Duplex 2205 Tube is produced with a minimum tensile strength of 621mpa. These tubes have a minimum yield strength of 448mpa and can be easily elongated by 25% in the system. Duplex 2205 Tubing showcases a superior hardness of Brinell 239HB max. Any bending of this tubing requires special equipment with a larger capacity. The Duplex Tube is a common feature in different processing equipment, chemical items, oil and gas exploration, and marine environments.

The Alloy 2205 Pipe is manufactured in three configurations namely seamless, welded, and erw. Each of the types has its own set of features that set them apart from the others. SA 789 UNS S31803 Duplex Seamless Pipe is the strongest grade designed by passing hot steel billets through extruded metal to precisely shape them. These pipes are expensive but have a higher load-bearing capacity. ASTM A790 UNS S31803 Duplex Welded Pipe is a low-cost alternative to this pipe. These pipes have lower strength as they are designed by welding pieces of sheets or strips in place. An ASTM A789 UNS S31803 ERW Pipe is a module that is manufactured by passing electric current and joining the pieces of metal in place. To know more about the Duplex Steel Tube or its pricing.

Duplex Tube Specification
Duplex 2205 Pipes StandardAISI, DIN, EN, GB, JIS, ASTM, ASME UNS S31803 Pipe
Duplex 2205 Tube SpecificationsASTM A 790 ASME SA 790
SA 789 UNS $31803 Welded Pipes size5.0 mm - 1219.2 mm
ASTM A790 UNS S31803 Seamless Pipes Outer Diameter6.00 mm OD up to 250 mm OD, Sizes up to 12" NB
Thickness of Duplex Pipes0.3mm 50 mm
ASTM A789 UNS S31803 EFW Pipes size5.0 mm - 1219.2 mm
Swg & Bwg10 Swg. 12 Swg. 14 Swg., 16 Swg. 18 Swg., 20 Swg.
Duplex Tube Welded pipes Size6.35 mm OD To 152 mm OD
UNS S31803 smls pipes Size3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN
Duplex Stainless Steel Pipes ScheduleSCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS A790 Pipe Supplier
Duplex Stainless Steel Tube LengthDouble Random, Single Random Standard & Cut length
Alloy 2205 Pipes FormHydraulic, Round, Straight Pipes, Square, Hollow, Coiled U Shape etc.
2205 Stainless Steel Pipes FinishPolished, Annealed and Pickled Bright and Annealed MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish,etc
Duplex Tubing EndPlain End, Beveled End, Treaded
Duplex 2205 Tubing wall thickness0.020 in - 0.220 in
duplex tube material MarkingAll UNS S31803 Pipes are marked as follows: Grade, Standard OD, Thickness, Length, Heat No. and Supplier / Manufacturer's Name
Duplex Stainless Steel Pipe Schedule Chart
Nominal Bore Outside Diameter Sch-5S Sch-10S Sch-40S Sch-80S Sch-160S Sch-XXS

mm

INCH

mm

Wt

mm

Weight

(Kg/mt)

Wt

mm

Weight

(Kg/mt)

Wt

mm

Weight

(Kg/mt)

 

wt

mm

Weight]

(Kg/mt)

 

Wt

mm

Weight]

(Kg/mt)

Weight

(Kg/mt)

 

1/8

10.3

124]

0276

124|

O28

....

037

 

241

0.47

 

>

. .

=

6

v4

13.7

124]

0390]

165|

049

224|

0631

 

302]

O80

 

-

- -

-

10

38

171

124|

0490

165]

063

231]

0845

 

320]

1.10

 

-

- -

-

15

1/2

21.3

165|

0800

211]

100

277]

127

 

375)

62]

 

475

194 747]

255

20

34

26.7

....

103

241]

128

287]

168

 

3.91

...

 

554

289 7.82|

363

25

1

334

165|

130

277|

209

338]

250

 

455]

324]

 

635

424 909]

545

32

114

422

165|

165

....

270 |]

....

338

 

485]

447]

 

635

561 ....

777

40

112

483

165]

191

277)

34%

368]

4.05

 

508

541]

 

7.14

7.25 10.16]

954

50

2

603

165]

240

277|

393

391|

544

 

554]

...

 

874

11.1 11.07]

13.44

6

212

73.0

241|

369

305]

526]

516]

863

 

7.01

14

 

953

149 142]

2039

80

3

829

211]

451

305|

645

549]

1130]

 

....

152]

 

414

21.3 1524)

27.65

100

4

1143

241|

584

305]

836

602]

1607]

 

856]

....

 

1349]

3354| 17.12)

41.03

125

5

141.3

277|

947

340]

1157]

655]

218

 

953]

3197]

 

1588]

49.11] 19.05)

57.43

...

6

168.3

277]

1132

340]

1384]

7.141]

283

 

1097]

427]

 

....

..... 2195

7922

200

8

219.1

277|

1479

....

1996]

818]

426

 

127

646

 

230

14112] 2223}

1078

20

10

273.1

340

2263

419|

....

927|

605

 

127

960|

 

286

1724] 25.40)

155.15

300

12

323.9

396

3125

457]

3600]

952|

....

 

127]

1320|

 

......

....... 25.40]

186.97

350°

14

3556

396

3436

478]

413

11.43]

9459

 

1905]

158.08]

 

35.71]

....... -

-

400

16

406.4

...

4156

...

47.29

127]

12330]

 

2141]

20333]

 

4046]

365.11 -

-

450

18

457.2

419|

4680

478]

5342]

1427]

15580]

 

....

25426)

 

......

466.40

.

Duplex Pipe Types

Duplex Stainless Steel Tube

Duplex Tubes

SA 789 UNS S31803 Seamless Pipe

ASTM A790 UNS S31803 Welded Pipe

Duplex Pipes

Alloy 2205 Pipe

2205 Stainless Steel Pipe

Duplex Tubing

Duplex Tube

International Standards Of Duplex Tubing
China GBISO Unified Digital CodeASTM / ASMEUNS codeEN CodeCompany Commercial Grade
022Cr23Ni4MoCuNS23043S32304S323041.4362SAF2304 (Sandvik)
022Cr22Ni5Mo3NS22253S31803S318031.4462-
022Cr23Ni5Mo3NS22053S32205S322051.4462SAF2205 (Sandvik)
022Cr25Ni7Mo4NS25073S32750S327501.441SAF2507 (Sandvik)
022Cr25Ni7Mo3WCuNS22583S31260S31260--
03Cr25Ni6Mo3Cu2NS25554S32550S325501.4507UR52+
022Cr25Ni7Mo4WCuNS27603S32760S327601.4501Zeron100
00Cr27Ni7Mo5N-S32707S32707-SAF2707 (Sandvik)
Test Conducted Of Duplex Tube
China GBISO Unified Digital CodeASTM / ASMEUNS codeEN CodeCompany Commercial Grade
022Cr23Ni4MoCuNS23043S32304S323041.4362SAF2304 (Sandvik)
022Cr22Ni5Mo3NS22253S31803S318031.4462-
022Cr23Ni5Mo3NS22053S32205S322051.4462SAF2205 (Sandvik)
022Cr25Ni7Mo4NS25073S32750S327501.441SAF2507 (Sandvik)
022Cr25Ni7Mo3WCuNS22583S31260S31260--
03Cr25Ni6Mo3Cu2NS25554S32550S325501.4507UR52+
022Cr25Ni7Mo4WCuNS27603S32760S327601.4501Zeron100
00Cr27Ni7Mo5N-S32707S32707-SAF2707 (Sandvik)
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