Super Duplex S32750 Tube | Super Duplex S32750 Welded Tube | Super Duplex S32750 Seamless Tube | ASTM A789 

Super Duplex Tubing - Seamless, ERW and Welded

Super Duplex S32750 Seamless Tube | Super Duplex 2507 ERW Tube | Super Duplex S32750 Welded Tube | Super Duplex S32750 Square Tube | Rectangle Tube | Round Tube

Super Duplex S32750 Tube Supplier | Super Duplex S32750 Tube Manufacturer | Super Duplex S32750 Tube Exporter | Super Duplex S32750 Tube Distributor.

An ISO 9001:2008 certified company, Oshwin Overseas a leading Manufacturer, Supplier, Exporter and Stockiest of high-quality    Super Duplex S32750 Tube (2507 Tubing) ASTM A789 / ASME SA789 S32750 Super Duplex Seamless Tube, S32750 Super Duplex ERW Tube and Welded Tube. Super Duplex Tubing (S32750) Tubes are available in Seamless Tube, Welded Tube and ERW Tube in OD and NB sizes. In addition to Standard Stainless Steel Tube Sizes like 2x2 Steel Tubing, 2 Inch Steel Tubing, 4x4 Square Tubing, 4x4 Steel Tubing, we are specialized in manufacturing, supplying and exporting custom Stainless Steel Tubing Dimensions, Rectangular Steel Tubing Dimensions, Steel Square Tubing Dimensions and tube sizes like Square Tubing Sizes (1 Inch Square Tubing, 2 Inch Square Tubing, 3 Inch Square Tubing, 4 Inch Square Tubing), Rectangular Steel Tubing Sizes,  of Duplex Tube (A789 S32750) cold drawn, Welding Stainless Steel Tubing, High Pressure Stainless Steel Tubing, Brushed Stainless Steel Tube, Polished Stainless Steel Tubing, Square Tubing, Rectangular Steel Tubing, Seamless Tube, ERW Tube and Welded Tube from our Factory.

Typical uses of 2507 Tubing (SA 789 S32750) are in oil and gas equipment, offshore technology, seawater desalination plants, chemical industry, flue-gas cleaning, desalination plants and seawater systems and pulp and paper industry. Other uses of these Stainless Steel Tube are in cargo tanks and Tube systems in chemical tankers, firewalls and blast walls on offshore platforms, bridges, storage tanks, pressure vessels, reactor tanks and heat exchangers and rotors and shafts.

Oshwin Overseas provide a whole range of high-class, customized and innovative ASTM A789 S32750 Super Duplex Seamless Tube and S32750 Super Duplex Welded Tubes using state-of-art technology. Oshwin Overseas has been serving the needs of the oil and gas industries, automotive, shipbuilding, power plants, for more than 2 decades. We have supplied S32750 Super Duplex Tube ASTM A789 Seamless Tubes and Welded Tubes to Petrochemical Plants, Nuclear Power Projects, Oil & Gas Industries in South Africa, Australia, New Zealand, Gambia, Ghana, Guinea, Nigeria, Egypt, Morocco, Sudan, Kenya, Mozambique, Zimbabwe, Madagascar, Tunisia, Saudi Arabia, Kuwait, Qatar, U.A.E & Turkey.

Oshwin Overseas have been supplying high-quality ASTM A789 / ASME SA789 with most advanced technology and with most reliable quality. All Super Duplex Tubing (S32750) Tubes are offered with a NACE 3.1 Certification, Mill Test Certification, and ISO 17025 Standards by a Government of India approved Laboratory. Positive Material Identification is done on all raw materials procured at Oshwin Overseas.Oshwin Overseas also offer a range of allied services including Cutting, Welding, Electro Polishing, Shot-Blasting and many more.

Super Duplex Tubing (ASTM A789 UNS S32750) Tube Specification :-

Standard / Specifications : ASTM A789 / ASME SA789 (A789 UNS S32750 / sa 789 S32750 / ASTM A789 S32750).

Grades : EN 1.4410 / UNS S32750 (F53).

Types of Tubes: Super Duplex  S32750 Seamless Tube / Super Duplex  S32750 Welded Tube / Super Duplex  S32750 Fabricated Tube / Super Duplex  S32750 High-Pressure Stainless Steel Tubing / Super Duplex S32750 Polished Stainless Steel Tubing / Super Duplex  S32750 Brushed Tube.

Forms of Tubes: Super Duplex  S32750 Round Tube, Super Duplex  S32750 Square Tube (Square Tubing), Super Duplex  S32750 Rectangle Tube (Rectangular Steel Tubing).

Tube Sizes: 1/8” to 48”, Seamless Tubes up to 24”.

Wall Thickness: 0.08mm – 1.5 mm.

Outer Diameter : 0.3mm – 10mm.

Thickness : 0.4mm up to 30.00 mm, Schedules 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH.

Hardness: Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.

Surface Finishing: Bright, Polish & Black.

Our Super Duplex Tubing (S32750) Tube, conforms to NACE MR0175 / ISO 15156.

Types of Super Duplex S32750 Tube

Super Duplex 2507 Seamless Tube

Super Duplex S32750 Seamless Tube

Super Duplex Seamless Tube is made from a solid round steel ‘billet’ which is heated and pushed or pulled over a form until the steel is shaped into a hollow tube. Seamless Tube doesn’t have a weld seam. In Seamless Tube, there are no welding or joints and is manufactured from solid round billets. Seamless Tube is manufactured by extruding the metal to the desired length and does not have any joint in its cross-section through-out its length.

The seamless Tube is finished to dimensional and wall thickness specifications in sizes from 1/8 inch to 26 inch OD. Oshwin Overaeas is one of the leading seamless Tube manufacturer in India. We are specialized in Seamless Tube manufacturing. Seamless Tubes have better ovality, or roundness than welded Tubes.

astm a789, ansi b16.19, super duplex tube

Super Duplex S32750 Welded Tube

Super Duplex S32750 Welded Tube is made of forming flat products (strip, sheet or plate) into the desired shape, in this case, normally round. Once the desired shape has been achieved, a high energy source is used to melt the metal locally at the weld joint. It is squeezed together and allowed to solidify, forming a weld bead. The high energy source may be an electric arc, a plasma arc, a laser beam, or even an electron beam.

Super Duplex S32750 Welded Tube is typically more cost-effective than their seamless equivalents. Super Duplex S32750 Welded Tube is usually more readily available than Super Duplex S32750 Seamless Tube. The wall thickness of super duplex S32750 welded tubes is generally more consistent than that of super duplex S32750 seamless tubes. The internal surface of super duplex welded tubes can be checked before manufacturing, which isn’t possible with super duplex seamless tubes.

Super Duplex S32750 Tube Forms

Super Duplex 2507 Rectangle Tubeg
astm a789, super duplex tube
Round Pipe Supplier
GradeTypeUnified Numbering System (UNS)Forgings GradesWerkstoff-nr.EuronormAFNORDIN Standards
2507Super DuplexS32750F531.4410en 1.4410X2CrNiMoN25-7-4Z3CN25.06Azdin 1.4462
MaterialTube Specification
Super Duplex steel Tube Tubing S32750ASTM A789 / ASME SA789
Super Duplex Steel Seamless Tube TubingASTM A789 UNS S32750
Super Duplex Steel Welded Tube TubingASTM A789 UNS S32750
Outside Diameter Thickness Range Type Form Length
O.D 5/8" to 5"
MM 0.6250 to 5.00
Gauge / SWG - 7 to 19
MM - 0.2615 to 9.266
Seamless / ERW / Welded / Fabricated / EFWPrecision Tubes, High Pressure tubes, Instrumentation tubes, Oil and Gas Tubes, Condenser Tubes, Chemical process tubes, Aerospace Tubes, Nuclear Fuel Tubes, Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes, Heat Exchanger Tubes, Capillary TubesSingle Random, Double Random & Required Length End: Plain End, Beveled End, Threaded
Super Duplex UNS S32750 Tube Tubing Manufacturer Supplier , ASTM A789
Super Duplex Tube Tubing ASTM A789 ANSI B 16.19 manufacturer and stockist. We are global distributors of super duplex tubing. Welding Stainless Steel Tubing, High Pressure Stainless Steel Tubing, Brushed Stainless Steel Tube, Polished Stainless Steel Tubing, Square Tubing, Rectangular Steel Tubing, Seamless Tube from our Factory. Contact for best price on super duplex grade tubes.
Brand: Oshwin Overseas
Manufacturer: Girnar Metals and Tubes - India, Sumitomo , Mustu Steel - Japan, Tubacex - Spain
Model: Square Tubing, Rectangular Steel Tubing, Seamless Tube, Polished Stainless Steel Tubing, Welding Stainless Steel Tubing, High Pressure Stainless Steel Tubing, Brushed Stainless Steel Tube, 1 inch square tubing, 2 inch square tubing, 3 inch square tubing, 4 inch square tubing, 4x4 square tubing, 2x2 steel tubing, 2 inch steel tubing, 4x4 steel tubing, 1.5 steel tubing, 3 inch steel tubing, 1.5 stainless steel tubing, 3 inch stainless steel tubing, 1 x 2 rectangular steel tubing, 2 x 3 rectangular steel tubing, 2 x 5 steel tubing, 6 inch stainless steel tubing, 1 inch id steel tubing, 10mm steel tube, 12mm stainless steel tube, 2 x2 steel tube, 22mm steel tube, 30mm steel tube, 3x3 steel tube, 10mm stainless steel tube, 12mm steel tube, 15mm stainless steel tube, 15mm steel tube, 25mm stainless steel tube, 22mm stainless steel tube, 4 x 4 steel tube, 1 x 2 steel tube, 16mm steel tube, 30mm stainless steel tube, 1.5 inch stainless steel tube, 5mm stainless steel tube, 2 x 5 steel tube, 8 inch steel tube, 14mm stainless steel tube, 16mm stainless steel tube, 38mm stainless steel tube, 22mm od stainless steel tube, 42mm stainless steel tube, 5 mm od stainless steel tube.
Product ID: OSH - 2507T
Characteristics of Super Duplex S32750
  • High Resistance to uniform corrosion.
  • High Resistance to pitting & crevice corrosion.
  • High Resistance to stress corrosion cracking & corrosion fatigue
  • High mechanical strength
  • High Resistance to abrasion & erosion
  • High Resistance to Fatigue
  • High energy absorption
  • Low thermal expansion
  • Good weld ability with care in thick sections
  • Useful up to 600°F


Applications of Super Duplex S32750
  • Chemical Processing Industry – Transport and Storage, pressure vessels, tanks, piping, and heat exchangers.
  • Oil and Gas exploration and processing equipment – piping, tubing, and heat exchangers
  • Marine Industry and Seawater systems – Cargo Tanks for Ships, High chloride environments,
  • FGD / Effluent Scrubber Systems.
  • Paper and Pulp Industry Digesters, Bleaching equipment and Stock-Handling Systems, Chip Pre-steaming vessels.
  • Food Processing Equipment.
  • Flue gas desulfurization / cleaning equipment
  • Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance
  • Biofuels Plant, Desalination plants
  • Firewalls and blast walls on offshore platforms


UNS S327500.030 Max24.0-26.01.20 Max3.0-5.06.0-8.00.24-0.320.035 Max0.80 Max0.020 Max
0.2% Proof Stress (N/mm2 ) [ksi] minimum550[79.8]
Tensile Strength (N/mm2) [ksi] minimum800 [116]
Elongation (%) minimum25
Hardness (HBN)270 max
Reduction of Cross Section Area (%)45
Density (Kg.m-1)7810
Magnetic Permeability33
Young’s Modulus (N/mm2)199 x 103
Specific Heat, 20°C (J.Kg-1.°K-1)475
Fracture Toughness, Kq (MPa.m)475
Specific Electrical Resistance, 20°C (µO.m)0.80
Thermal conductivity, 20°C14.2
Mean coefficient of thermal expansion11.1 x 10-6

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  • Commercial Invoice including HS Code
  • Packing List including number of boxes, net weight, gross weight, Marks & Numbers
  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Material Test Certificates as per EN 10204 3.1, EN 10204 3.2
  • Test Certificates certifying NACE MR0103, NACE MR0175


  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177


The different ways in which our products are packed are:

  • Shrink-wrapped
  • Wooden Boxes
  • Wooden Pallets
  • Wooden Crates
  • Carton boxes


We mark Duplex 2205 as needed with the most suitable & visible marking techniques. Standard Marking System :-

  • Manufacturer’s Name or Trademark
  • Material Designation
  • Size Designation
  • Rating Designation
  • Melt Designation
  • Marking for Identification

Duplex 2205 Experiance - Oshwin Overseas

Leading Supplier, Manufacturer Exporter

More than 30 years of Experiance
Duplex 2205 Mill Test Report

Mill Test Report Provided

In Accordance with EN10204 NACE 3.1, NACE 3.2
Duplex 2205 Fast Delivery

Fast Delivery

Warehouse near to Airport & Port.
Duplex 2205 Shipping

Efficient & Cost Effective Shipping Services

We Offer EXW – Ex Works, FOB, CFR, CIF, DDU, etc.
Duplex 2205 Inspection


3rd Party Inspection is Carried out
Oshwin Overseas - ISO Certified

ISO 9001:2008 Certified

Duplex 2205 Quality Product

Quality Product

Transparent client dealing, No False Assurance, 100% Fulfillment of Commitments.
Duplex 2205 Export

Worldwide Exporter

Export to more than 70 Countries Worldwide
Duplex 2205 Price

Best Price

Competitive pricing is offered
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