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Duplex stainless steel pipe

ame: Duplex Stainless Steel pipe

Size: 4mm-325mm

Material: S31803/S32205/S32750/S32760,etc.

Tajpu：Welded, Seamless, ERW, EFW, Fabricated Pipe

Thickness range: SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS

Surface Treatment: Polishing, Hairline, Pickled, ktp.

Finished condition: Round, Square, Rectangular, Coil，U Tube

Application: Petrochemical, Oil & Gas； Geothermal, Mining；Chemical Process, Pharmaceutical, Biomass；Sea Water, Water Desalination； LNG (Liquefied Natural Gas), Nuclear Power, Solar Power。

Model number: Duplex stainless steel

Orignal: Wenzhou,Zhejiang

Standrad:ASTM/ASME A789/SA789, A790/SA790

Brand: KAIXIN

Technics: CFD

Package: Packed in woven bag, or put in wooden case

Price: 2500~3600 usd/ton

Delivery: Accord Quantity

Certificate: ISO SGS

Production ability: 1000 tons per month

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  • Product Detail
  • Specification
  • Applications
  • Schedule Chart
  • Chemical Composition
  • Mekanikaj Propraĵoj
  • Dimension
  • Dimensional Tolerance
  • Weight Chart
  • Pressure Rating
  • Price

Compared with ferritic stainless steel and austenitic stainless steel, duplex stainless steel pipe has good welding performance. It is neither like the welding heat affected zone of ferritic stainless steel, because of the grain coarsening, the plastic toughness is greatly reduced, nor like austenitic stainless steel, it is more sensitive to welding hot cracks.

 

Due to its special advantages, duplex stainless steel is widely used in petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, paper-making machinery and other industrial fields. In recent years, it has also been used in the field of bridge bearing structure, with a good development prospect.

Specification of Duplex Stainless Steel pipe

Standard ASTM/ASME A789/SA789, A790/SA790
Grado UNS NO. S31803/S32205/S32750/S32760,etc.
Tajpu SEAMLESS / ERW / WELDED/ FABRICATED
Length Single Random, Cut Length
End Plain End, Bevelled End, Threaded

Applications of Duplex Stainless Steel pipe

  • Oil and gas equipment
  • Offshore technology
  • Seawater desalination plants
  • Chemical industry, especially when handling chlorides
  • Flue-gas cleaning
  • Pulp and paper industry
  • Cargo tanks and pipe systems in chemical tankers
  • Firewalls and blast walls on offshore platforms
  • Bridges
  • Storage tanks
  • Pressure vessels, reactor tanks, and heat exchangers
  • Rotors, impellers and shafts

Duplex Stainless Steel pipe Schedule Chart

1/8″ IPS(.405″ O.D.) 3 1/2″ IPS( 4.000″ O.D.)
Seamless Pipes, SCH 40, 80 Pipes, SCH 10, 40, 80, 160, XXH
1/4″ IPS(.540″ O.D.) 4″ IPS(4.500″ O.D.)
Pipes, SCH 10, 40, 80 Seamless Pipes, SCH 10, 40, 80, 160, XXH
3/8″ IPS(.675″ O.D.) 5″ IPS( 5.563″ O.D.)
Seamless Pipes, SCH 10, 40, 80 Pipes, SCH 10, 40, 80, 160, XXH
1/2″ IPS(.840″ O.D.) 6″ IPS(6.625″ O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH Seamless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
3/4″ IPS(1.050″ O.D.) 8 ” IPS(8.625″ O.D.)
Pipes, SCH 10, 40, 80, 160, XXH Stainless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
1″ IPS:(1.315′ O.D.) 10″ IPS(10.750″ O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH Pipes, SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4″ IPS(1.660″ O.D.) 12″ IPS(12.750″ O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2″ IPS(1.900″ O.D.) 14″ IPS(14.000″ O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH10 (.188), SCH40 (.375)
2″ IPS(2.375″ O.D.) 16″ IPS(16.000″ O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH10(.188), SCH40(.375)
2 1/2″ IPS(2.875″ O.D.) 18″ IPS (18.000″ O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH-40 (.375)
3″ IPS( 3.500″ O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH  

Duplex Stainless steel Pipe Chemical Composition

Grado C≤ Mn≤ P≤ S≤ Kaj≤ En Cr Mo N Cu
S31803 0.03 2.00 0.03 0.02 1.00 4.5-6.5 21.0-23.0 2.5-3.5 0.08-0.20 _
S32205 0.03 2.00 0.03 0.02 1.00 4.5-6.5 22.0-23.0 3.0-3.5 0.14-0.20 _
S32750 0.03 1.20 0.035 0.02 0.80 6.0-8.0 24.0-26.0 3.0-5.0 0.24-0.32 0.5
S32760 0.05 1.00 0.03 0.01 1.00 6.0-8.0 24.0-26.0 3.0-4.0 0.20-0.30 0.50-1.00
S31500 0.03 1.2-2.0 0.03 0.03 1.4-2.0 4.25-5.25 18.0-19.0 2.5-3.0 0.05-0.10

Duplex Stainless steel Pipe Mekanikaj Propraĵoj

Mechanical properties Tensile,min,ksi[MPa] Yield,min,ksi[MPa] Plilongigo,%(min) Hardness,HB(max)
S31803 90 [620] 65 [450] 25 290
S32205 95 [655] 65 [450] 25 290
S32750 116 [800] 80 [550] 15 300
S32760 109 [750] 80 [550] 25 300
S31500 90 [630] 60[440] 30 290

Dimension Table Of Duplex Stainless steel Pipe

Nominal Thickness
(en)
MM		 Pipe Size
(en)		 Transverse Areas
(in2)
MM2		 Diameter
(en)
MM		 Volume
(ft3/ft)		 Number of Threads per inch of Screw Weight Length of Pipe
(ft per sq.0 foot of surface)
Internal External Steel Internal External (kg/m) (lb/ft) Internal Surface
(ft)		 External Surface
(ft)
0.007 1/8 0.006 0.013 0.007 0.027 0.0405 0.00004 27 0.036 0.024 14.020 9.043
0.009 ¼ 0.010 0.023 0.013 0.036 0.0540 0.00007 18 0.063 0.042 10.049 7.007
0.009 3/8 0.019 0.036 0.017 0.049 0.0675 0.00013 18 0.084 0.057 7.075 5.066
0.011 ½ 0.030 0.055 0.025 0.062 0.0840 0.00021 14 1.026 0.085 6.014 4.055
0.011 ¾ 0.053 0.087 0.033 0.082 1.0050 0.00037 14 1.068 1.013 4.064 3.064
0.013 1 0.086 1.036 0.049 1.005 1.0315 0.00060 11 ½ 2.050 1.068 3.064 2.090
0.014 1 ¼ 1.050 2.016 0.067 1.038 1.0660 0.00104 11 ½ 3.038 2.027 2.077 2.030
0.015 1 ½ 2.004 2.084 0.080 1.061 1.0900 0.00141 11 ½ 4.004 2.072 2.037 2.001
0.015 2 3.036 4.043 1.008 2.007 2.0375 0.00233 11 ½ 5.043 3.065 1.085 1.061
0.020 2 ½ 4.079 6.049 1.070 2.047 2.0875 0.00333 8 8.062 5.079 1.055 1.033
0.022 3 7.039 9.062 2.023 3.007 3.0500 0.00513 8 11.027 7.058 1.025 1.009
0.023 3 ½ 9.089 12.056 2.068 3.055 4.0000 0.00687 8 13.056 9.011 1.008 0.095
0.024 4 12.073 15.090 3.017 4.003 4.0500 0.00884 8 16.006 10.079 0.095 0.085
0.026 5 20.000 24.030 4.030 5.005 5.0563 0.01389 8 21.074 14.061 0.076 0.069
0.028 6 28.089 34.047 5.058 6.007 6.0625 0.02006 8 28.023 18.097 0.063 0.058
0.032 8 50.002 58.042 8.040 7.098 8.0625 0.03552 8 42.049 28.055 0.048 0.044
0.037 10 78.085 90.076 11.090 10.002 10.0750 0.05476 8 60.024 40.048 0.038 0.036
0.041 12 111.090 127.064 15.074 11.094 12.0750 0.07763 8 79.077 53.060 0.032 0.030
0.044 14 135.030 153.094 18.064 13.013 14.0000 0.09354 8 93.075 63.000 0.028 0.027
0.050 16 176.070 201.005 24.035 15.000 16.0000 1.02230 8 116.008 78.000 0.025 0.024
0.056 18 224.000 254.085 30.085 16.088 18.0000 1.05550 8 156.026 105.000 0.023 0.021
0.059 20 278.000 314.015 36.015 18.081 20.0000 1.09260 8 183.005 123.000 0.020 0.019
0.069 24 402.010 452.040 50.030 22.063 24.0000 2.07930 8 254.048 171.000 0.017 0.016

Dimensional Tolerance of Duplex Stainless steel Pipe

Nominal pipe size
up to 4 = ± 0.79 mm | 5 thru 8 = + 1.58 mm / – 0.79 mm
10 thru 18 = + 2.37 mm / – 0.79 mm | 20 thru 24 = + 3.18 mm / – 0.79 mm
Wall Thickness
All Diameters = – 12.5%
+ tolerance not specified		 Length
+ 6.40 mm / – 0 mm		 Weight
Weight = + 10% / – 1.5%

Duplex Stainless steel Pipe Weight Chart

oUTSIDE DIA
MM		 WALL THK
MM		 IN. SCHEDULE KG/M
13.72 1.65 1/4 10S 0.50
13.72 2.24 1/4 40S 0.64
13.72 3.02 1/4 80S 0.81
17.15 1.65 3/8 10S 0.64
17.15 2.31 3/8 40S 0.86
17.15 3.20 3/8 80S 1.12
21.34 2.11 1/2 10S 1.02
21.34 2.77 1/2 40S 1.29
21.34 3.73 1/2 80S 1.65
26.67 2.11 3/4 10S 1.30
26.67 2.87 3/4 40S 1.71
26.67 3.91 3/4 80S 2.23
33.40 2.77 1 10S 2.13
33.40 3.38 1 40S 2.54
33.40 4.55 1 80S 3.29
33.40 6.352) 1 160 4.30
42.16 2.77 1¼ 10S 2.73
42.16 3.56 1¼ 40S 3.44
42.16 4.85 1¼ 80S 4.53
42.16 6.352) 1¼ 160 5.69
48.26 2.77 1½ 10S 3.16
48.26 3.68 1½ 40S 4.11
48.26 5.08 1½ 80S 5.49
60.33 2.77 2 10S 3.99
60.33 3.91 2 40S 5.52
60.33 5.54 2 80S 7.60
60.33 8.742) 2 160 11.29
73.03 3.05 2½ 10S 5.35
73.03 5.16 2½ 40S 8.77
73.03 7.01 2½ 80S 11.59
88.90 3.05 3 10S 6.56
88.90 5.49 3 40S 11.47
88.90 7.62 3 80S 15.51
88.90 11.132) 3 160 21.67
101.60 3.05 3½ 10S 7.53
101.60 5.74 3½ 40S 13.78
101.60 8.08 3½ 80S 18.92
114.30 3.05 4 10S 8.50
114.30 6.02 4 40S 16.32
114.30 8.56 4 80S 22.67
114.30 13.492) 4 160 34.05
141.30 6.55 5 40S 22.10
141.30 9.53 5 80S 31.44
141.30 15.882) 5 160 49.87
168.28 3.4 6 10S 14.04
168.28 7.11 6 40S 28.69
168.28 10.97 6 80S 43.21
168.28 14.27 6 120 54.75
168.28 18.262) 6 160 68.59
219.08 8.18 8 40S 43.20
219.08 12.7 8 80S 65.63
219.08 18.23 8 120 91.30
219.08 23.012) 8 160 112.97

Pressure Rating of 2205 duplex stainless pipe

duplex 2205 pipe pressure rating

Pipe O.D.
(In.)		 Wall Thickness Of Pipe (Inches)
.028 .035 .049 .065 .083 .095 .109 .120
Working Pressure (Psig)
1/8 7900 10100            
1/4 3700 4800 7000 9500        
5/16   3700 5400 7300        
3/8   3100 4400 6100        
1/2   2300 3200 4400        
3/4     2200 3000 4000 4600    
1       2200 2900 3400 3900 4300

Duplex Steel Pipe Price List-2023

Pipe OD
mm		 Pipe WT
mm		 en. Sch Price/Kg
13.72 1.65 44565 10S 390
13.72 2.24 44565 40S 392
13.72 3.02 44565 80S 394
17.15 1.65 44628 10S 396
17.15 2.31 44628 40S 398
17.15 3.2 44628 80S 400
21.34 2.11 44563 10S 402
21.34 2.77 44563 40S 404
21.34 3.73 44563 80S 406
26.67 2.11 44624 10S 408
26.67 2.87 44624 40S 410
26.67 3.91 44624 80S 412
33.4 2.77 1 10S 414
33.4 3.38 1 40S 416
33.4 4.55 1 80S 418
33.4 6.352) 1 160 420
42.16 2.77 1¼ 10S 422
42.16 3.56 1¼ 40S 424
42.16 4.85 1¼ 80S 426
42.16 6.352) 1¼ 160 428
48.26 2.77 1½ 10S 430
48.26 3.68 1½ 40S 432
48.26 5.08 1½ 80S 434
60.33 2.77 2 10S 436
60.33 3.91 2 40S 438
60.33 5.54 2 80S 440
60.33 8.742) 2 160 442
73.03 3.05 2½ 10S 444
73.03 5.16 2½ 40S 446
73.03 7.01 2½ 80S 448
88.9 3.05 3 10S 450
88.9 5.49 3 40S 452
88.9 7.62 3 80S 454
88.9 11.132) 3 160 456
101.6 3.05 3½ 10S 458
101.6 5.74 3½ 40S 460
101.6 8.08 3½ 80S 462
114.3 3.05 4 10S 464
114.3 6.02 4 40S 466
114.3 8.56 4 80S 468
114.3 13.492) 4 160 470
141.3 6.55 5 40S 472
141.3 9.53 5 80S 474
141.3 15.882) 5 160 476
168.28 3.4 6 10S 478
168.28 7.11 6 40S 480
168.28 10.97 6 80S 482
168.28 14.27 6 120 484
168.28 18.262) 6 160 486
219.08 8.18 8 40S 488
219.08 12.7 8 80S 490
219.08 18.23 8 120 492
219.08 23.012) 8 160 494
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