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We are DSS seamless tubes manufacturer in India

Duplex round tubes are easily welded and formed

Table of Content

Specification of Duplex Stainless Steel Seamless Tube
Frequently Used Duplex Tubing Types
DSS Tubes price List
Duplex Heat Exchanger Tubes Size Schedule Chart
Weight Chart of Duplex steel Tube
Duplex Stainless Steel Seamless Tube Pressure rating
Available Grades of Duplex Steel Welded Tube
Duplex Instrument Tube Chemical Element
Mechanical Properties of Duplex stainless steel Seamless Tube
Temperature Limit of Duplex Tube
DSS Tubing Inspection and Testing

Specification of Duplex Stainless Steel Seamless Tube

Refer Sizes and dimensions of Duplex stainless steel tubes

Standards	ASTM A789 / ASME SA789
Standard	AISI, DIN, EN, GB, JIS, ASTM, ASME Tube
Seamless Tube Sizes	3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN
Duplex Steel Welded Tube Size	6.35 mm OD To 152 mm OD
Wall thickness of Tube	0.020" –0.220" (special wall thicknesses available)
Swg and Bwg	10, 12, 14, 16, 18, 20 Swg.
Length	Double Random, Single Random, Standard and Cut length
Finish	Polished, AP, MF, BA
Form	Boiler, Hydraulic, Round, Rectangular, Hollow, Coil, Square, Straight and U bent Tube, Pan Cake Coils, LSAW Tube Etc.
Type	Welded, Seamless, ERW, EFW, Fabricated, CDW, DOM and CEW Tubes
End	Beveled End, Plain End, Treaded.
Marking	All Tube are marked as follows: Manufacturer’s / Supplier Name Standard, Thickness, Grade, OD, Length, Heat No. (Or according to the customer’s request.)
Supplier provide below Value Added Service	Annealed and Pickled Bending, Draw and Expansion as per required Size and Length, Polish (Electro and Commercial), Machining Etc.
Specialize in	Capillary Tube & Other Odd Size Heat Exchanger & Condenser Tube
Uses & Application	Sea Water Equipment Heat Exchangers Condensers Pulp and Paper Industry Off-Shore Oil Drilling Companies Power Generation Petrochemicals Pharmaceuticals Pharmaceutical Equipment Chemical Equipment Gas Processing Specialty Chemicals
We can also cut, thread, and groove Tube to meet your specifications

Duplex Pipes Online is Duplex Stainless Steel Tube Manufacturers and duplex tube suppliers who stock tubes in all surface finish like Anodized, Mill Finish, Sand Blasted, Brushed, Annealed, Bright Annealed, Polished, Cold Drawn and many others

Frequently Used Duplex Tubing Types

DSS Tubes price List

2205 Duplex Stainless Steel Tubes Price	Price in INR	Price in USD
Seamless Tubes 12.70mmodx1.24mm Wall Seamless-specification Astm A789	INR 84,276	USD 1149.05
Duplex Stainless Steel Welded Tubes To Specification Sa 789 Uns S31803/uns S32205	INR 65,604	USD 894.47
Welded Duplex Stainless Steel Heat Exchanger Tubes Conf. To Specn. Sa-789 Uns S31803/uns S32205	INR 16,738	USD 228.21
Stainless Steel Seamless Duplex Tubes Grade S31803 (per unit)	INR 515	USD 7.02

Duplex Heat Exchanger Tubes Size Schedule Chart

Duplex welded tube are widely used in corrosive enviroments

Wall	Size Range ( O.D.)
.010	1/16" , 1/8" , 3/16"
.020	1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8"
.012	1/8"
.016	1/8" , 3/16"
.028	1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2"
.035	1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4"
.049	3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4"
.065	1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3"
.083	1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3"
.095	1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2"
.109	1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2"
.120	1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3"
.125	3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4"
.134	1"
.250	3"
.375	3 1/2"

Various Suppliers, exporters, dealers, and distributors buy Duplex Tubing from Duplex Pipes Online and supply in their own countries with higher Price, so contact Us directly to check our latest price list to get the best duplex stainless steel tube price in India. Contact now for Free quote

Weight Chart of Duplex steel Tube

NPS	Outside diameter		Wall thickness (WT)			weights	weight
NPS	Inch	MM	Inch	MM	Schedule	kg / M	Lb /feer
1/2	0.840	21	0.109	2.769	40 STD	1.268	0.851
1 1/4	1.660	42	0.140	3.556	40 STD	3.385	2.273
			0.147	3.734	80 STD	1.621	1.088
			0.154	3.912	80 STD	2.195	1.474
1	1.315	33	0.133	3.378	40 STD	2.501	1.679
3/4	1.050	27	0.113	2.870	40 STD	1.684	1.131
			0.179	4.547	80 STD	3.325	2.172
			0.191	4.851	80 STD	4.464	2.997
1 1/2	1.900	48	0.145	3.683	40 STD	4.048	2.718
			0.200	5.080	80 STD	5.409	3.361
2	2.375	60	0.154	3.912	40 STD	5.441	3.653
			0.218	5.537	80 STD	7.480	5.022
2 1/2	2.875	73	0.203	5.516	40 STD	8.629	5.793
			0.276	7.010	80 STD	11.411	7.661
3	3.500	89	0.216	5.486	40 STD	11.284	7.576
4	4.500	114	0.237	6.020		16.073	10.790
			0.337	8.560		22.318	14.983
6	6.625	168	0.188	4.775		19.252	12.924
			0.203	5.516		20.739	13.923
			0.219	5.563		22.318	14.983
			0.250	6.350		25.354	17.021
			0.300	7.620	80 STD	15.272	10.253
			0.280	7.112	40 STD	58.263	18.974
			0.312	7.925		31.334	21.036
			0.375	9.525		37.285	25.031
			0.432	10.973	80 XHY	42.561	28.573
			0.500	12.700		48.719	32.708
8	8.625	219	0.188	4.775		25.233	16.940
			0.219	5.563		29.286	19.661
			0.250	6.350	20	33.308	22.361
			0.277	7.036	30	36.786	24.696
			0.322	8.179	40	42.352	28.554
			0.375	9.525		49.216	33.041
			0.406	10.312	60	53.085	35.638
			0.203	5.156		27.198	18.259
			0.500	12.700	80 XHY	64.627	43.388
10	10.750	273	0.188	4.775		31.588	21.207
			0.219	5.563		36.689	24.631
			0.250	6.350	20	41.759	28.035
			0.307	7.798	30	51.002	34.240
			0.344	8.738		56.946	38.231
			0.365	9.271	40 STD	63.301	40.483
			0.438	11.125		71.852	48.238
			0.500	12.700	60 XHY	81.530	54.735
			0.594	15.088	80	95.969	64.429
12	12.750	324	0.188	4.775		37.570	25.222
			0.219	5.563		43.657	29.309
			0.250	6.350		49.713	33.375
			0.281	7.137		55.739	37.420
			0.312	7.925		61.735	41.445
			0.375	9.525		73.824	49.562
			0.406	10.312		79.727	53.525
			0.500	12.700		97.438	65.415
			0.562	14.275		108.966	73.154
14	14.000	356	0.188	4.775		41.308	27.732
			0.219	5.563		48.012	32.233
			0.250	6.350	20	54.685	36.713
			0.281	7.137		61.327	41.172
			0.312	7.925		67.939	45.611
			0.375	9.525	STD	81.281	54.568
			0.438	11.125	40	94.498	63.441
			0.500	12.700	XHY	107.381	72.090
			0.625	15.875		132.983	89.278
16”	16.000	406	0.188	4.775		47.290	21.748
			0.219	5.563		54.980	36.910
			0.250	6.350	10	62.639	42.053
			0.281	7.137		70.268	47.174
			0.312	7.925	20	77.866	52.275
			0.344	8.738		85.677	57.519
			0.375	9.525	30 STD	93.213	62.578
			0.438	11.125		108.433	72.797
			0.500	12.700	40 XHY	123.289	82.770
18	18.000	457	0.219	5.563		61.948	41.588
			0.250	6.350		70.593	47.393
			0.281	7.137		79.208	53.176
			0.312	7.925	20	87.792	58.939
			0.375	9.525	STD	105.144	70.588
			0.438	11.125	30	122.369	82.152
			0.500	12.700	XHY	139.198	93.450
			0.562	14.275	40	155.904	104.666
			0.625	15.875		172.754	115.978
20	20.000	508	0.250	6.350		78.547	52.733
			0.282	7.163		88.458	59.386
			0.312	7.925		97.719	65.604
			0.375	9.525	20 STD	117.075	78.598
			0.438	11.125		136.305	91.508
			0.500	12.700	30 XHY	155.106	104.130
			0.594	15.088	40	183.378	123.110
			0.625	15.875		192.640	129.328
			0.688	17.475		211.368	141.901
24	24.000	610	0.250	6.350		94.456	63.413
			0.281	7.137		106.029	71.183
			0.312	7.925		117.573	18.932
			0.375	9.525	20 STD	140.938	64.618
			0.438	11.125		164.176	110.219
			0.500	12.700	XHY	186.923	125.490
			0.625	15.875		232.410	156.028
			0.688	17.475	40	255.148	171.293
			0.750	19.050		277.401	186.233
30	30.000	762	0.250	6.350		118.318	79.433
			0.281	7.137		132.851	89.189
			0.312	7.925	10	147.353	98.925
			0.375	9.525	STD	176.731	118.648
			0.438	11.125		205.983	138.286
			0.500	12.700	20 XHY	234.647	157.530
			0.625	15.875	30	292.066	196.078
			0.688	17.475		320.817	215.380
			0.750	19.050		348.988	234.293
36	36.000	914	0.250	6.350		142.180	95.453
			0.281	7.137		159.672	107.196
			0.312	7.925	10	177.133	118.918
			0.375	9.525	STD	215.525	142.678
			0.438	11.125		247.790	166.353
			0.500	12.700	20 XHY	282.372	198.570
			0.625	15.875		351.723	236.128
			0.688	17.475		386.487	259.467
			0.750	19.050		420.576	282.353
42	42.000	1067	0.312	7.925		206.914	138.911
			0.375	9.525	STD	248.319	166.708
			0.500	12.700	XHY	33.097	221.610
			0.750	19.050		492.163	330.413
48	48.000	1219	0.375	9.525	STD	284.112	190.738
			0.438	11.125		331.404	222.487
			0.500	12.700	XHY	377.822	253.650
			0.750	19.050		563.750	378.473
			0.875	22.225		655.969	440.383

Duplex Stainless Steel Seamless Tube Pressure rating

Tube O.D. (in.)	Wall Thickness of Tube (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

Available Grades of Duplex Steel Welded Tube

ASTM Specification	ASME Specification	Seamless/ Welded Tubing
ASTM A789	SA 789	UNS S31803
ASTM A789	SA 789	UNS S32205
ASTM A789	SA 789	Duplex 2205

Duplex Instrument Tube Chemical Element

We are stockist and distributor of duplex steel capillary tubes

UNS	Chemical Composition %
UNS	C Maximum	Mn Maximum	P Maximum	S Maximum	Si Maximum	Ni	Cr	Mo	N	Cu	Others
UNS S31803	00.03	2	00.03	00.02	1	4.5-6.5	21.0-23.0	2.5-3.5	00.08-00.20	. . .	. . .
UNS S32205	00.03	2	00.03	00.02	1	4.5-6.5	22-23	3.0-3.5	00.14-00.20	. . .	. . .

Mechanical Properties of Duplex stainless steel Seamless Tube

SS 2205	Tensile Stress, min., ksi [MPa]	Yield Stress, min., ksi [MPa]	Elongation in 2 in., or 50mm, min, %	Hardness, Maximum Brinell
UNS S31803	90 Ksi [620MPa]	65 Ksi [450MPa]	25	290
UNS S32205	95 Ksi [655MPa]	70 Ksi [485MPa]	25	290

Temperature Limit of Duplex Tube

Alloy 2205	Temperature Range	Quench Info
UNS S31803	1020-1100°C (1870-2010 °F)	Rapid cooling in water/ air
UNS S32205	1020-1100°C (1870-2010 °F)	Rapid cooling in water/ air

DSS Tubing Inspection and Testing

Micro and MacroTest
Positive Material Identification – PMI Testing
Hardness Test
Chemical Analysis – Spectro Analysis
Intergranular Corrosion (IGC) Test
Flaring Test
Flattening Test
Pitting Resistance Test
Mechanical Testing Such as Tensile of Area

We are DSS seamless tubes manufacturer in India

Duplex round tubes are easily welded and formed

Refer Sizes and dimensions of Duplex stainless steel tubes

Duplex welded tube are widely used in corrosive enviroments

We are stockist and distributor of duplex steel capillary tubes

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