Duplex Steel Seamless Pipe

Short Description:

Type: Duplex Steel Seamless Pipe, Duplex Steel Seamless Tube
Spec.: Outer Diameter: up to 12″ NB. Thickness: SCH XSS
Standard: ASTM A790, ASTM A789
Grade: S31803, S32205, S32750, S32760
Surface: Annealed, Pickling, Polished
Packing: Waterproof paper wrapped, Packed in wooden cabins.

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Product Detail

Size Chart

Application

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Details of Duplex Steel Seamless Pipe

What is a duplex steel seamless pipe?

Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel. The picture shows the yellow austenitic phase as “islands” surrounded by the blue ferritic phase. When duplex stainless steel is melted it solidifies from the liquid phase to a completely ferritic structure. Hot-rolled duplex stainless steel pipe and cold-drawn duplex stainless pipe made up of duplex stainless steel pipe. Duplex steel seamless pipe is widely used in the high-precision requirements project. Duplex steel seamless pipes are both strong and highly corrosion-resistant. There are various grades of duplex stainless steel pipes with different mechanical properties.

Chemical Composition of Duplex Steel Seamless Pipe

C	N	P	Si	Mn	Mo	Fe	Cr	S	Ni
1.0	0.03	0.02	2.0	3.0 - 3.5	22.0 - 23.0	0.03	4.5 - 6.5	0.14 - 0.2	Bal

Mechanical Characteristics of Duplex Steel Seamless Pipe

Pipe Density	Pipe Melting Point	Yield Strength (0.2%Offset)	Tensile Strength	Elongation
7.8 g/cm3	1350 °C (2460 °F)	Psi - 80000 , MPa - 550	Psi - 116000 , MPa - 800	15 %

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Size Chart of Duplex Steel Seamless Pipe

NPS	Outside Diameter		Wall Thickness
NPS	in	mm	in	mm
1/2″	0.84	21	0.109	2.769
1/2″	0.84	21	0.147	3.734
3/4″	1.05	27	0.113	2.87
3/4″	1.05	27	0.154	3.912
1″	1.315	33	0.133	3.378
1″	1.315	33	0.179	4.547
1 1/4″	1.66	42	0.14	3.556
1 1/4″	1.66	42	0.191	4.851
1 1/2″	1.9	48	0.145	3.683
1 1/2″	1.9	48	0.2	5.08
2″	2.375	60	0.154	3.912
2″	2.375	60	0.218	5.537
2 1/2″	2.875	73	0.203	5.516
2 1/2″	2.875	73	0.276	7.01
3″	3.5	89	0.216	5.486
3″	3.5	89	0.3	7.62
4″	4.5	114	0.237	6.02
4″	4.5	114	0.337	8.56
6″	6.625	168	0.188	4.775
			0.203	5.516
			0.219	5.563
			0.25	6.35
			0.28	7.112
			0.312	7.925
			0.375	9.525
			0.432	10.973
			0.5	12.7
8″	8.625	219	0.188	4.775
			0.203	5.156
			0.219	5.563
			0.25	6.35
			0.277	7.036
			0.322	8.179
			0.375	9.525
			0.406	10.312
			0.5	12.7
10″	10.75	273	0.188	4.775
			0.219	5.563
			0.25	6.35
			0.307	7.798
			0.344	8.738
			0.365	9.271
			0.438	11.125
			0.5	12.7
			0.594	15.088
12″	12.75	324	0.188	4.775
			0.219	5.563
			0.25	6.35
			0.281	7.137
			0.312	7.925
			0.375	9.525
			0.406	10.312
			0.5	12.7
			0.562	14.275
14″	14	356	0.188	4.775
			0.219	5.563
			0.25	6.35
			0.281	7.137
			0.312	7.925
			0.375	9.525
			0.438	11.125
			0.5	12.7
			0.625	15.875
16”	16	406	0.188	4.775
			0.219	5.563
			0.25	6.35
			0.281	7.137
			0.312	7.925
			0.344	8.738
			0.375	9.525
			0.438	11.125
			0.5	12.7
18″	18	457	0.219	5.563
			0.25	6.35
			0.281	7.137
			0.312	7.925
			0.375	9.525
			0.438	11.125
			0.5	12.7
			0.562	14.275
			0.625	15.875
20″	20	508	0.25	6.35
			0.282	7.163
			0.312	7.925
			0.375	9.525
			0.438	11.125
			0.5	12.7
			0.594	15.088
			0.625	15.875
			0.688	17.475
24″	24	610	0.25	6.35
			0.281	7.137
			0.312	7.925
			0.375	9.525
			0.438	11.125
			0.5	12.7
			0.625	15.875
			0.688	17.475
			0.75	19.05
30″	30	762	0.25	6.35
			0.281	7.137
			0.312	7.925
			0.375	9.525
			0.438	11.125
			0.5	12.7
			0.625	15.875
			0.688	17.475
			0.75	19.05
36″	36	914	0.25	6.35
			0.281	7.137
			0.312	7.925
			0.375	9.525
			0.438	11.125
			0.5	12.7
			0.625	15.875
			0.688	17.475
			0.75	19.05
42″	42	1067	0.312	7.925
			0.375	9.525
			0.5	12.7
			0.75	19.05
48″	48	1219	0.375	9.525
			0.438	11.125
			0.5	12.7
			0.75	19.05
			0.875	22.225

Application of Duplex Steel Seamless Pipe

- Oil and Gas Pipeline
- Chemical Industry
- Plumbing
- Heating
- Water Supply Systems
- Power Plant
- Paper & Pulp Industry
- General Purpose Applications
- Fabrication Industry
- Food Processing Industry
- Steel Structural

A789 duplex seamless pipe