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An ISO 9001:2008 certified company, Oshwin Overseas a leading Manufacturer, Supplier, Exporter and Stockiest of high quality Stainless Steel Tube (S32760 Tubing) ASTM A789 / ASME SA789 S32760 Super Duplex Seamless Tube, S32760 Super Duplex ERW Tube and Welded Tube. Super Duplex Tubing (S32760) Tubes are available in Seamless Tube, Welded Tube and ERW Tube in OD and NB sizes. In addition to standard sizes, we are specialise in manufacturing, suppling and exporting custom sizes of Duplex Tube (A789 S32760) cold drawn Seamless Tube, ERW Tube and Welded Tube from our Factory.
Typical uses of S32760 Tubing (SA789 S32760) 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 Tubes 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, impellers and shafts.
Oshwin Overseas provide a whole range of high-class, customized and innovative ASTM A789 UNS S32760 Super Duplex Seamless Tubes and S32760 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 S32760 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 advance technology and with most reliable quality. All Super Duplex Tubing (S32760) 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 S32760) Tube Specification :-
Standard / Specifications : ASTM A789 / ASME SA789 (A789 UNS S32760 / sa 789 S32760 / ASTM A789 S32760).
Grades : EN 1.4501 / UNS S32760 (F55).
Types of Tubes : Seamless / Welded / Fabricated.
Forms of Tubes : Round Tube, Square Tube, Rectangle Tube.
Size : 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 (S32760) Tube, conforms to NACE MR0175/ISO 15156.
Types of Super Duplex S32760 Tube
Seamless Steel 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 Tubes don’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 tube sizes from 1/8 inch to 26 inch OD. Oshwin Overseas 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.
Welded Steel Tube is made by 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.
Welded Tubes are typically more cost effective than their seamless equivalents. Welded Tubes are usually more readily available than seamless. The longer lead time required for seamless Tubes can not only make timing problematic, but it also allows more time for the price of the materials to fluctuate. The wall thickness of welded Tubes is generally more consistent than that of seamless Tubes. The internal surface of welded tubes can be checked before manufacturing, which isn’t possible with seamless.
ERW tube means Electric Resistance Welded Tubes. ERW Steel Tube is made from HR Coils. Electric Resistance Welding (ERW) tube is manufactured by rolling metal and then welding it longitudinally across its length. A plate rolled to become a tube and welded using Electric Resistance Welding process. Usually for high diameter. (cheapest process available). ERW tube has a welded joint in its cross-section.
ERW (Electric Resistance Welded) tubes are welded longitudinally, manufactured from Strip / Coil and can be manufactured up to 24” OD. ERW steel tubes and tubes are used for various engineering purposes, fencing, scaffolding, line tubes etc. ERW steel tubes and tube are available in various qualities, wall thicknesses, and diameters of the finished tubes.
Super Duplex S32760 Forms
Characteristics of Super Duplex S32760
- 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 S32760
- 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
- Super Duplex UNS S32760 Chemical Composition
- Super Duplex UNS S32760 Mechanical Properties
- Super Duplex Steel UNS S32760 Physical Properties
|UNS S32760||0.03 max||24.0-26.0||1.0 max||3.0-4.0||6.0-8.0||0.2-0.3||0.03 max||1.0 max||0.01 max||0.5-1.0|
|Young’s Modulus (N/mm2)||199 x 103|
|Specific Heat, 20°C (J.Kg-1.°K-1)||475|
|Fracture Toughness, Kq (MPa.m)||98|
|Specific Electrical Resistance, 20°C (µO.m)||0.80|
|Thermal conductivity, 20°C||14.2|
|Mean coefficient of thermal expansion||11.1 x 10-6|
|0.2% Proof Stress (N/mm2 ) [ksi] minimum||550[79.8]|
|Tensile Strength (N/mm2) [ksi] minimum||750 |
|Elongation (%) minimum||25|
|Hardness (HBN)||270 max|
|Reduction of Cross Section Area (%)||45|
- 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:
- 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