Duplex heat exchanger tubes

Duplex Heat Exchanger Tubes

Duplex 2205 is duplex stainless steel that has been nitrogen-improved in order to counteract typical corrosion challenges with the 300 series alloy of steel. A group of stainless steels known as “duplex” is neither completely austenitic, such as 304 steels, nor wholly ferritic, such as 430 stainless.
Duplex stainless steel heat exchanger tubes work well in high-pressure and temperature environments. U-Tubes are forged or connected to tube bundles and connected using tube sheets that have flowing barriers. Duplex Heat Exchanger Tubes have excellent corrosion tolerance, formation consists, and structural qualities.

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Duplex heat exchanger tubes specification

Duplex Heat Exchanger Tubes Specification

Duplex heat exchanger tubes dimensions Duplex steel heat exchanger tube wall thickness Duplex stainless steel heat exchanger tubes length
  • 0.010 to 1.500 inch
  • 0.254 to 38.1 mm
  • Upto 0.003″
  • Upto 0.0762 mm
  • Duplex stainless steel straight tube: Up to 30 m
  • Duplex steel U Bend tube : 12.7 to 38.1mm
  • DSS condenser tubes:
    to 1.500

For customized length please contact below listed duplex heat exchanger tube suppliers in UAE

Required list of duplex steel seamless U tubes mechanical test American standard for OD and thickness Stainless steel duplex super heater tube manufacturing process
  • Eddy Current Testing
  • Mechanical Properties Test
  • Technological Tests
  • Hydraulic Test
  • Hydrostatic Test
  • Bundle Inspection
  • Rolling Inspection
  • ASTM A789/ SA 789
  • Duplex hot finished condenser tubes
  • DSS cold finished evaporator tubes
Finned tube DSS heat exchanger tubes supplied standard Delivery Conditions
  • Lengths : up to 76 feet
  • OD : .625 to 1 inch
  • WUF range : .049 to .109 FPI, 19 to 28 FPI
  • Standard Wire Gauge (SWG)
  • Birmingham Wire Gauge (BWG)
  • Annealed
  • Normalized
  • Normalized and Tempered


European standard Applications & uses Duplex stainless steel heat exchanger tubes manufacturing type
  • EN 10296-2 (welded finned tubes)
  • EN 10216-5 (seamless & welded evaporator tubes)
  • EN 10217-7 (welded boiler tube)
  • EN 10297-2 (seamless reheater tubes)
  • EN 10312 (welded shell tube)
  • Tank heaters
  • Boilers
  • HVAC
  • Shell & Tube Heat Exchangers
  • Superheaters
  • Heat Exchangers
  • Tube bundles
  • Duplex seamless tube for heat exchanger
  • Duplex steel seamless u tubes
  • Duplex stainless steel condenser tubes
  • DSS evaporator tubes
Duplex stainless super heater tube wall thickness Meet standards DSS fire tube heat exchanger surface treatments & finish
  • 4 Inch
  • Schedule 5 / 5S
  • SCH 10 duplex steel U tubes (Most selling)
  • SCH 20
  • SCH 30
  • SCH 40 duplex steel seamless boiler tubes (Most selling)
  • SCH 40S
  • SCH 80 / 80S
  • SCH 120
  • SCH 160
  • Standard (SCH STD)
  • Ex-Standard (XS)
  • Double Extra Strong (XSS)
  • EN 10088-3
  • DIN 17456
  • NSF 61
  • EN 10216 – 5
  • EN 10217-7
  • EN 10088-2
  • DIN 17458
  • ASME B36.19M
  • EN 10216 – 2
  • ASME B36.19
  • Cleaned
  • Passivated
  • Precleaned
  • Pickled
  • Oil-dip
  • Passivation
  • Shot Blasting
  • Phosphating
  • Varnish
Duplex stainless steel shell tube condenser finish QC and duplex stainless steam generator tubes supporting documents List of leading DSS heater tubes manufacturers
  • No.4
  • BA polishing
  • Bright Annealed
  • 2B
  • 400 grit
  • Mirror
  • 600 grit
  • Annealed & Pickled (A&P)
  • 320 grit
  • Cold Drawn
  • Solution annealed DSS finned tube
  • Matt finish
  • 180 grit polished

Refer these details before buying duplex steel straight tube heat exchanger from manufacturers, traders, stockist, stockholders, importers, or suppliers

  • QC/ Inspection reports
  • MTC EN 10204 type 3.1
  • Check duplex stainless steel superheater tubes dimensions
  • DSS reheater tubes material
  • Origin of material
  • schedule & size as per the work order
  • packaging etc)
  • Duplex stainless shell tube detailed inspection plan (appearance
  • Labeling verification
  • Verify quantity
  • integrity


Check ready stock of these make with above verified listed duplex heat exchanger tube suppliers

  • Sosta, Italy
  • Bristol Metals, USA
  • Nippon Steel Corporation, Japan
  • Outokumpu, Finland (Europe)
  • Acerinox, Spain
  • Tubecon, Pretoria (South Africa)
  • Baosteel, China
  • SMM Oman
  • ArcelorMittal, Luxembourg (Europe)
  • Sandvik, Sweden
  • Tenaris, Luxembourg (Europe)
  • Nippon Steel & Sumitomo Metal Corporation, Japan
  • ThyssenKrupp AG, Germany
  • AL JAZEERA, Oman
  • JFE, Japan
  • MACSTEEL, Gauteng (South Africa)
  • POSCO, South Korea
  • Steelmor, Gauteng (South Africa)
  • Nippon Yakin Kogyo Co., Ltd., Japan
  • Aperam, Luxembourg (Europe)
duplex SS double tube condenser value added services UNS S31803 shell and tube heat exchangers types
  • Beveling
  • Polishing
  • Threading
  • Cutting
  • DSS U bend tube
  • Duplex steel straight tubing (seamless)

Are you looking for a price list of duplex 2205 heat exchanger tubes for your project? Purchase it from a dependable Middle East stockist. know why eddy’s current testing is used?

Duplex tubing arrangement in shell and tube heat exchangers

Tube Diameter (mm) Triangular Pitch (mm) Square Pitch (mm)
5/8” (16 ) 25/32” (20 ) 7/8” (22 ) (Note = 1)
¾” (19 ) 15/16” or 1” (24 or 25 ) 1” (25 )
1” (25 ) 1 ¼” (32 ) 1 ¼” (32 )
1 ¼” (32 ) 1 9/16” (39 ) 1 9/16” (39 )
1 ½” (38 ) 1 7/8” (47 ) 1 7/8” (47 )

Equivalent standard of duplex steel evaporator tubing

Grade UNS EN/ DIN/ Wnr
2205 condenser tube
  • UNS S31803 heat exchanger
  • UNS S32205 heat exchanger
  • WNR. 1.4462 boiler tube
  • WNR. 1.4462 finned tube

Duplex Heat Exchanger Tubes Properties

Duplex steel boiler tube standard coil dimensions

1/2 inch
1/2 inch
3/4 inch
3/4 inch
4 inch 6.1875 3/4 inch 12 10 5 4
5 inch 7.1875 3/4 inch 18 16 7 6
6 inch 8.375 3/4 inch 28 26 13 12
8 inch 10.375 1 inch 53 50 24 22
10 inch 12.375 1 inch 80 76 38 36
12 inch 14.375 1 127 122 57 56
14 inch 16.25 1 1/4 inch 159 154 71 72
16 inch 18.5 1 1/4 inch 208 202 96 94
18 inch 21 1 1/2 inch 127 118
20 inch 23 1 1/2 inch 326 318 165 160

ASTM standard of heat exchanger tubes

Duplex stainless steel heat exchanger tubes types and forms

Duplex stainless steel heat exchanger tubes

Duplex stainless steel heat exchanger tubes

Duplex 2205 heat exchanger tubes

Duplex 2205 heat exchanger tubes

UNS S32205 u tube

UNS S32205 u tube

Duplex seamless tube for heat exchanger

Duplex seamless tube for heat exchanger

Duplex cold drawn seamless tube for heat exchanger

Duplex cold drawn seamless tube for heat exchanger

Saf 2205 u shaped tube for heat exchanger tubing

Saf 2205 u shaped tube for heat exchanger tubing

  • Duplex stainless boiler tube
  • Duplex stainless steel condenser tube
  • Duplex steel heater tube
  • DSS heat exchanger tube

Tips to avoid failure of duplex steel seamless heat exchanger tubes

  • Upgrade to duplex stainless super heater tube material in seawater
  • Designing and fabricating
  • DSS finned tube weld joint is best compared to cold expanded joint
  • Buy mirror finish duplex steel shell tube condenser for resists pitting
  • To weld duplex stainless heat transfer tube use the correct welding consumables

Get an importer who offers MTC and has length-cutting capabilities of UNS s32205 u tube for heat exchanger in Dubai; check the working principle

Heat transferred from one place to another is the working principle of a Duplex Cold Drawn Seamless Tube for Heat Exchanger. Flue gas sometimes referred to as effluent and emission leftovers enter and pass thru the heat exchanger while oil and gas or gasoline are burned in a burner. As the air travels to the burner’s vent exit, the hot gas phase warms the steel. The airflow moving well over SAF 2205 U Shaped Tube for Heat Exchanger Tubing’s exterior is heated by the heated metal as this is taking place.
They serve the function of properly heat transferred, and their range of uses especially one that involves in power generation, pharmaceutical factories, heating systems, freezing, and conditioning.

Over the course of a machine’s lifetime, duplex heat exchangers are very cost-effective. Duplex 2205 Heat Exchanger Tubes are a particularly cost-effective option because they can last for years with regular maintenance.

  • Heat exchangers made of austenitic stainless steel can:
  • provide a longer service life than alternative materials for construction
  • Reduce costly results of the low by equipment failure.
  • Eliminate the need for a replacement parts supply.
  • Ensure high durability to corrosion
  • A high-temperature transfer rate is delivered.
  • Allow for highly compressed gasses to limit the amount of surface area needed.
  • Owing to the welded steel frame structure, damage while handling, assembly, and use is eliminated.
  • These alloys have outstanding tolerance to oxidative corrosion.

In the energy-generating, petroleum, pharmaceutical, fertilizer, and air conditioning sectors in specific, eddy current analysis of pipes is a useful method of determining the state and longevity of pipes.
The method is used to look for oxidation, cracking, fractures, abrasion, as well as other surface changes on the inside and outside of the tube. One of the main benefits of this high-speed examination technique is that it might go through varnish and coats. Certain non-ferrous metals like chromium, copper and stainless steel are suited for this procedure.
Additionally, we evaluate carbon tubing using magnetic-biased eddy currents and distant fields. Electromotive force is used in eddy testing procedures to find tube flaws.

Find the top 10 distributors of duplex cold drawn seamless tube for a heat exchanger that can provide test results. and get here and verify the pros and cons

Duplex Seamless Tube for Heat Exchanger Advantages Include

  • A high level of protection against neutralized chloride stress corrosion
  • excellent tolerance against corrosion
  • excellent endurance, oxidation, and wear resistance
  • The mechanical qualities are excellent throughout.
  • excellent weldability
  • The heat-treating temperature range is wide.
  • substantial heat transfer coefficient

Due to such an imperfection, Duplex in heat exchangers also has disadvantages, which is one of its disadvantages.
Duplex stainless steel, in comparison to austenitic stainless steel, has poorer heat tolerance. It is typically utilized in industrial environments with temperatures under 300 degrees Celsius. Machining duplex stainless steel, which has a 25% chromium concentration, seems to be more challenging than making austenitic stainless steel.

At the lowest cost saf 2205 u shaped tubes are provided with all international requirements in GCC countries, learn more about the DIN 1.4462 heat exchanger tubes purpose

One of the parts of the heat exchanger, the duplex seamless tube is positioned in the cylinders to facilitate the transfer of heat between the two materials. Duplex seamless tube for heat exchanger has excellent isothermal qualities and significant thermal conductivity.
It is referred to as a heat exchange because it can flow directly thermal energy from one place to another with the minimum energy loss. Additionally, a variety of improved heat transfer pipes, including finned tubes, slotted tubes, helically grooved tubes, etc., can be used in superconductive heat exchangers.