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Duplex / Super Duplex Steel Tubes



ASTM A789 S31803, S32205, S32750, S32760 Duplex, Super Duplex Steel Tubes Stockist in Mumbai India.

ASTM A789 2507, 2205 Seamless, Welded, ERW Tubes

SAF 2205, SAF 2507 Tubing Stockist and Supplier in Mumbai India.


Preston Pipes and Alloys offer a wide range of Duplex and Super Duplex Steel Tubes. They are the leading exporter, trader and the stockiest supplier of this tube. Company provides with wide variety of specifications of these tubes in as per the customers requirement. The company is successfully covering major areas of the world by providing their quality material supply to every client, every industry.


These tubes are composed of large diameter size and are available in various types and forms. The company has improved the packaging of this tube to avoid any damage of product until the goods have been shipped. Industry packs their goods according to the material. And for international shipping, company provides with the best packaging of tube since it has to go through various barriers until it is shipped to the customer.


About Preston Pipes and Alloys-
We offer our clients superior products with the highest degree of technical skills. We lay strong emphasis on quality assurance, economic growth, and environmental protection as they are a key to our success. These factors help us to manufacture top-notch products. Due to the superior quality f products and customer service, our company won the approval of international quality accreditation and ISO certifications.


Duplex and Super Duplex Steel Tubes are first packed in various bundles and to avoid rust during the water shipment, it is wrapped up in polypropylene sheets. It is very helpful and maintains the quality of the product until it has been shipped.


Following material test performed is:
The company provides with various tests on the material in order to check for the quality of the product before delivering it to their customers. These tests are conducted so that the customer can assure with goods they are buying from them. These tests are mechanical testing, hardness test, chemical analysis, flattening test, micro and macro test and intergranular test (IGC).


Tests certificates for Duplex and Super Duplex Steel Tubes:
The industry also provides with various test and inspection reports for their customers so that they can trust on the quality and other material reports before buying it from them. Various tests are third party inspection, raw material certificate, radiography test report and other various standard certificates to their users if requested by the clients.


Equivalent Grades
STANDARD WERKSTOFF NR. UNS
Duplex 2205 1.4462 S31803 / S32205
Super Duplex 2507 1.4410 S32750 / S32760
Duplex Steel Tubes

Standard Specification
Specifications :
Standard :
Seamless Tubes Range :
Welded Tubes Range :
Outside Diameter :
Length :
Thickness :
Schedule :
Type :
Form :
End :
ASTM A789 / ASME SA A789
ASTM, ASME and API
1 / 2" NB - 8" NB
6" NB - 24" NB
6.00 mm OD up to 250 mm OD, Sizes up to 12” NB
Single Random, Double Random & Required Length
0.3mm – 50 mm
SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXS
Seamless, EFW, Fabricated
Round Tubes, Square Tubes, Rectangular Tube
Plain End, Beveled End, Treaded

Chemical Composition
Grade C Mn Si P S Cr Mo Ni N Fe
S31803 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 22.0 – 23.0 3.0 – 3.5 4.50 – 6.50 0.14 – 0.20 63.72 min
S32205 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 21.0 – 23.0 2.50 - 3.50 4.50 – 6.50 0.8 – 0.20 63.54 min
S32750 0.030 max 1.20 max 0.80 max 0.035 max 0.020 max 24.00 – 26.00 3.00 – 5.00 6.00 – 8.00 0.24 – 0.32 58.095 min
S32760 0.05 max 1.00 max 1.00 max 0.030 max 0.010 max 24.00 – 26.00 3.00 – 4.00 6.00 – 8.00 0.20 – 0.30 57.61 min

Mechanical Properties
Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S31803 / S32205 7.805 0.285 1420 – 1465 2588 – 2669
S32750 / S32760 7.8 0.281 1350 2460

Types Of Duplex / Super Duplex Steel Tubes
Duplex Steel Tubes

Super Duplex Steel Tube

Duplex Steel 2205 Tubes

Super Duplex Steel 2507 Seamless Tube

S31803 Duplex Steel Tubes

ASTM A789 Super Duplex Steel Seamless Tubing

ASME SA 789 Duplex Steel Welded Tubes

Super Duplex Steel 2507 Welded Tubes Supplier

Duplex Steel S32205 Rectangle Tubes Exporter

2507 Super Duplex Steel Square Tubes

ASTM A789 Duplex Steel ERW Tubing

2205 Duplex Heat Exchanger Tubes

ASME SA790 Super Duplex Bright Annealing Tubes

Duplex 2205 Electric-Resistance-Welded Tube

ASTM A789 Duplex Steel Sanitary Tube

Duplex Steel Tubes Equivalent Grades

Duplex Steel 1.4462 Tubes

Super Duplex 1.4410 Seamless Tubes

Duplex 1.4462 Welded Tube

Super Duplex Steel 1.4410 ERW Tubes

Duplex Stainless Steel S32205 Tubing

Super Duplex UNS S32750 Seamless Tubes

Duplex Steel S32205 ERW Tubes

Super Duplex S32760 Seamless Coiled Tubing

Duplex 2205 Seamless Tubing

S32205 Duplex Steel Welded Tubes

Super Duplex Cold Drawn Seamless Tubes

Wrought Ferritic Duplex 2205 Welded Tubing

Duplex Steel Electric Resistance Tubing

Super Duplex 2507 Seamless Tubing


Application Industry

Duplex / Super Duplex Steel Tubes are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of 2205 / 2507 Seamless Tubes, Welded Tubes through a worldwide network of stock-keeping branches. These are use in various industries like :


Application Industry
  • Chemical Industry
  • Oil & Gas Industry
  • Petrochemical Industry
  • Power Genration Industry
  • Sugar Industry
  • Food Processing Industry
  • Paper & Pulp Industry
  • Offshore and Onshore Services

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