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Duplex Stainless Steel Pipe

Duplex stainless steel pipe

Duplex stainless steel pipe

Duplex stainless steel pipe

ame: Duplex Stainless Steel pipe

Size: 4mm-325mm

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

Type：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, etc.

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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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
Grade	UNS NO. S31803/S32205/S32750/S32760,etc.
Type	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

Grade	C≤	Mn≤	P≤	S≤	Si≤	Ni	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 Mechanical Properties

Mechanical properties	Tensile,min,ksi[MPa]	Yield,min,ksi[MPa]	Elongation,%(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 (in) MM	Pipe Size (in)	Transverse Areas (in2) MM2			Diameter (in) MM		Volume (ft3/ft)	Number of Threads per inch of Screw	Weight		Length of Pipe (ft per sq.0 foot of surface)
Nominal Thickness (in) MM	Pipe Size (in)	Internal	External	Steel	Internal	External	Volume (ft3/ft)	Number of Threads per inch of Screw	(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	in.	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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