Duplex Steel Tube

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Duplex Steel Tube Exopter, Suppliers and Manufacturer in Dubai, UAE

Duplex Steel Seamless Tubing,Duplex Steel 2205 Seamless Tube, ASTM A790 Duplex Steel Tube, Duplex Steel Seamless Tube Manufacturers, Duplex Steel UNS S31803 Seamless Tube

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Duplex Steel Tubes are corrosion-resistant tubing made from duplex stainless steel, featuring a blend of austenitic and ferritic microstructures. These tubes excel in demanding environments due to their exceptional strength, corrosion resistance, and durability. Commonly used in industries such as chemical processing, oil and gas, marine engineering, and construction, duplex steel tubes offer reliable performance in critical applications subjected to harsh conditions.

Duplex Steel Tube Specifications

Standard

:

ASTM A789 /ASME SA 789

Type

:

Seamless Tubes

Grade

:

UNS S31803 & UNS S32205

Size

:

1/2″NB TO 12 “NB IN

Thickness

:

0.5-45mm

Outer Diameter

:

6.0-630mm

Dimensions

:

OD(6.0-630)*WT(0.5-45)mm

Schedule

:

SCH20, SCH30, SCH40, STD, SCH80

Length

:

Single Random, Double Random & Cut Length

Duplex Steel Tube Chemical Composition

Duplex 2205

Ni

Cr

Mo

Mn

Si

C

N

S

P

Fe

MIN

4.5

22.0

3.0

0.14

MAX

6.5

23.0

3.5

2.0

1.0

0.03

0.2

0.02

0.03

Balance

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Duplex Steel Tube 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

Top Duplex Steel Tube Manufacturing Company in Dubai

At PipingMart, we take pride in being the largest supplier and manufacturer in the UAE, offering cutting-edge solutions for all your piping needs. With state-of-the-art production plants strategically located in the UAE, we boast a vast inventory of over 25,000 tons of premium-quality materials readily available in stock.

Duplex Steel Tube Grades

  • Duplex Steel S31803 Tubes
  • Duplex Steel ASTM A789 Tubes
  • Duplex Steel SA 789 Tubes

Contact us to get a quick quote for your requirement.

We offer These Duplex Steel Tube as per DIN, ISO, JIS or ANSI Standard.

Get the best price from Duplex Steel Tube Manufacturers & stockist in UAE, check Duplex Steel Welded Tube price per kg in Dubai.

Advantages of Duplex Steel Tube

  1. Corrosion Resistance: Duplex steel tubes offer excellent resistance to corrosion, including both general and localized corrosion such as pitting and crevice corrosion.
  2. High Strength: These tubes exhibit superior mechanical properties, including high tensile strength and toughness, making them suitable for demanding applications.
  3. Durability: Duplex steel tubes are highly durable and can withstand harsh environments, resulting in longer service life compared to other materials.
  4. Versatility: They are suitable for a wide range of applications across various industries, including chemical processing, oil and gas, marine engineering, and construction.
  5. Cost-Effectiveness: Despite their premium properties, duplex steel tubes can provide cost savings over the long term due to their extended service life and reduced maintenance requirements.
  6. Resistance to Stress Corrosion Cracking: Duplex steel tubes have good resistance to stress corrosion cracking, enhancing their reliability in critical applications.
  7. Ease of Fabrication: These tubes are relatively easy to fabricate, weld, and form, allowing for efficient manufacturing and installation processes.
  8. Reduced Maintenance: With their resistance to corrosion and wear, duplex steel tubes require minimal maintenance, leading to lower downtime and operational costs.

Types of Duplex Steel Tube

SS Seamless Pipe
Duplex Steel Tube
Duplex Steel Seamless Pipe
Duplex Steel Seamless Tube
SS 304 ERW Pipe
Duplex Steel ERW Tube
AISI Duplex Steel Tube
Duplex Steel Welded Tube
Duplex Steel Round Tube

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Duplex Steel Tube Uses

Application Industry

Duplex Steel Tube applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Chemical Processing

Marine endineering

Oil and Gas Industry

Power Generation Industry

  1. Chemical Processing: Duplex steel tubes are widely used in chemical processing plants for transporting corrosive chemicals, acids, and solvents due to their excellent corrosion resistance.
  2. Oil and Gas Industry: These tubes are employed in offshore and onshore oil and gas facilities for transporting crude oil, natural gas, and refined petroleum products, as well as in pipelines for water injection and gas injection.
  3. Marine Engineering: Duplex steel tubes find applications in marine environments for seawater desalination, offshore drilling platforms, shipbuilding, and other marine engineering applications due to their resistance to corrosion in seawater.
  4. Petrochemical Industry: They are used in petrochemical plants for conveying various petroleum derivatives, gases, and chemicals, including acids, alkalis, and hydrocarbons.
  5. Water Treatment: Duplex steel tubes are utilized in water treatment plants for distributing treated water, wastewater, and industrial effluents, thanks to their corrosion resistance and durability.
  6. Power Generation: These tubes are employed in power plants for transporting steam, condensate, and cooling water, as well as in heat exchangers and boiler systems, where corrosion resistance and high strength are essential.

How to Choose the Right Duplex Steel Tube

  1. Understand Application Requirements: Identify the specific requirements of your application, including factors such as temperature, pressure, corrosion resistance, and mechanical properties.
  2. Select the Appropriate Grade: Choose the duplex steel grade that best suits your application needs, considering factors such as corrosion resistance, strength, and weldability.
  3. Evaluate Environmental Conditions: Consider the environmental conditions in which the tube will operate, such as exposure to corrosive chemicals, seawater, high temperatures, or high-pressure environments.
  4. Determine Size and Dimensions: Determine the required size and dimensions of the tube, including outer diameter, wall thickness, and length, based on flow rate, pressure, and space constraints.
  5. Check Compliance with Standards: Ensure that the duplex steel tube meets relevant industry standards and specifications, such as ASTM, ASME, and NACE, to guarantee quality and reliability.
  6. Assess Weldability and Fabrication: Consider the weldability and ease of fabrication of the duplex steel tube, especially if welding or forming processes are involved in the installation.
  7. Verify Material Certification: Request material certification and documentation from the supplier to confirm the quality and composition of the duplex steel tube, including chemical composition, mechanical properties, and heat treatment.

Can Duplex Steel Tube be Welded?

Yes, duplex steel tubes can be welded using standard welding techniques. Special considerations are needed due to the unique microstructure, and control of welding parameters is essential to ensure high-quality welds and maintain the corrosion resistance and mechanical properties of the material.

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FAQ (Frequently Asked Questions)

How to Maintain Duplex Steel Tube?

Maintaining duplex steel tubes involves regular cleaning with mild detergent and water to prevent corrosion. Avoid exposure to corrosive substances like acids and salts, and protect against abrasion. Periodically inspect for damage such as cracks or pitting, and promptly address any issues to prevent further deterioration. Store in a dry, well-ventilated area following manufacturer guidelines, and conduct routine inspections to ensure long-term durability and performance.

Can Duplex Steel Tube Attract Magnet?

Yes, duplex steel tubes can attract magnets. Duplex stainless steel, which is a combination of austenitic and ferritic steel, typically exhibits magnetic properties. This is due to the presence of ferrite phases in the microstructure, which allows the material to be attracted to magnets. However, the degree of magnetism can vary depending on factors such as the specific alloy composition and processing methods used during manufacturing.

Does Duplex Steel Tube Corrode?

Duplex steel tubes are known for their excellent corrosion resistance. The combination of austenitic and ferritic microstructures in duplex stainless steel provides superior resistance to various corrosive environments, including acids, chlorides, and stress corrosion cracking. This makes duplex steel tubes highly resistant to corrosion in comparison to other types of stainless steel. However, proper maintenance practices, such as regular cleaning and inspection, should still be followed to ensure the long-term integrity of the material.

Duplex Steel Tube Weight Chart

OUTSIDE DIA
MM
WALL THK
MM
IN.SCHEDULEKG/M
13.721.651/410S0.50
13.722.241/440S0.64
13.723.021/480S0.81
17.151.653/810S0.64
17.152.313/840S0.86
17.153.203/880S1.12
21.342.111/210S1.02
21.342.771/240S1.29
21.343.731/280S1.65
26.672.113/410S1.30
26.672.873/440S1.71
26.673.913/480S2.23
33.402.77110S2.13
33.403.38140S2.54
33.404.55180S3.29
33.406.352)11604.30
42.162.7710S2.73
42.163.5640S3.44
42.164.8580S4.53
42.166.352)1605.69
48.262.7710S3.16
48.263.6840S4.11
48.265.0880S5.49
60.332.77210S3.99
60.333.91240S5.52
60.335.54280S7.60
60.338.742)216011.29
73.033.0510S5.35
73.035.1640S8.77
73.037.0180S11.59
88.903.05310S6.56
88.905.49340S11.47
88.907.62380S15.51
88.9011.132)316021.67
101.603.0510S7.53
101.605.7440S13.78
101.608.0880S18.92
114.303.05410S8.50
114.306.02440S16.32
114.308.56480S22.67
114.3013.492)416034.05
141.306.55540S22.10
141.309.53580S31.44
141.3015.882)516049.87
168.283.4610S14.04
168.287.11640S28.69
168.2810.97680S43.21
168.2814.27612054.75
168.2818.262)616068.59
219.088.18840S43.20
219.0812.7880S65.63
219.0818.23812091.30
219.0823.012)8160112.97

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