Duplex Steel Tubes Supplier

Duplex steel tubes have become increasingly popular in the manufacturing and construction industries due to their excellent physical properties and high corrosion resistance. This type of steel combines the strength of ferritic steels with the ductility of austenitic steels, making Duplex Steel Tubes ideal for a variety of applications.

What are Duplex steel tubes?

Duplex Tubes are produced by blending two different types of stainless steels—ferritic and austenitic. As a result, it combines the properties of both types of stainless steel into one tube. This combination creates an alloy with superior corrosion resistance and strength compared to other types of steel alloys available on the market. In addition, duplex steel also has higher creep strength than other materials such as carbon or low-alloy steels. This makes it very useful for applications such as pressure vessels or piping where high temperature performance is important. Different types of products are available, such as Duplex Steel Welded Tubes, Super Duplex Steel Tubes etc.

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Tubes Suppliers

When you use Rectangular UNS S31803 Tubes, you don’t have to worry about sacrificing strength in order to gain corrosion resistance. This alloy has impressive tensile strength—on par with many higher-grade alloys—which makes it ideal for applications involving pressure ratings or heavy loads where strength is essential. It also retains its shape well under extreme temperatures, making it suitable for use in high-temperature environments or in areas where frequent temperature fluctuations occur. Stainless Steel 347 Tubes, Stainless Steel 309S Seamless Tubes and many more grades are also available.

Duplex steel tubes come in a variety of forms, including round, rectangular, and EFW (Electric Fusion Welding) tubes. Round duplex steel tubes are usually made from UNS S31803 or 2205 alloy grade material and provide good weldability along with superior corrosion resistance. Rectangular duplex steel tubes typically feature UNS S32750 or 2507 alloy grade material, which is resistant to chloride pitting and crevice corrosion. Lastly, EFW UNS S31803 duplex tube is used for heavier wall thicknesses for applications involving higher temperatures and pressures. All types of duplex steel tubes offer a combination of strength, durability, and cost-effectiveness that makes them attractive to many customers.

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Benefits of Duplex Steel Tubes

The benefits associated with duplex steel tubes make them an ideal choice for applications where strength and corrosion resistance are essential factors. The unique combination of ferrite and austenite microstructures makes these kinds of tubes highly resistant to stress corrosion cracking even in harsh environments such as marine atmospheres or acidic conditions. Additionally, duplex steel has double the yield strength compared to conventional austenitic stainless steels like 304L stainless steel or 316L stainless steel while maintaining similar levels of elongation or formability. They also tend to be more cost-effective than other grades such as nickel alloys or superalloys while providing excellent performance in aggressive corrosive media such as sulphuric acid or hydrochloric acid solutions.

If you require a strong yet corrosion resistant material that can stand up to extreme temperatures or harsh environments then duplex steel may be the right choice for your project. It is especially useful in applications where high pressure or temperatures may be present such as boilers or heat exchangers since its creep strength ensures that it won’t fail under these conditions. Furthermore, its excellent weldability makes it easy to fabricate into whatever shape is necessary for a given application making it suitable for almost any project requiring strong yet flexible material that won’t corrode easily over time.

Duplex steel tubing is a type of tubing made from duplex stainless steel, which is a material that contains both austenitic & ferritic phases. This two-phase microstructure gives duplex steel tubing unique properties such as high strength, excellent corrosion resistance & resistance to stress corrosion cracking.

Duplex steel tubes offer several advantages over other types of tubes. These duplex tubes provide superior corrosion resistance, high strength, durability & resistance to stress corrosion cracking. Duplex steel tubes can also resist erosion & abrasion which is ideal for harsh environments like offshore oil rigs.

Duplex steel tubes are widely used in various industries, including chemical processing, petrochemical and oil & gas. They are also used to construct bridges, buildings & other structures that require high strength and corrosion resistance. Additionally, duplex steel tubes are used in heat exchangers & boilers due to their ability to withstand high temperatures and pressure.

Duplex steel tubes can be manufactured using various methods, such as seamless or welded. The seamless process involves heating a billet of duplex steel to a high temperature and then rolling it into a tube shape. The welded process involves joining two pieces of duplex steel together using heat & pressure to create a strong bond. Both processes result in high-quality duplex steel tubes suitable for various applications.

Specification of Duplex Steel Tube

SpecificationASTM A789 / ASME SA789 
Size5.0 mm – 1219.2 mm
Outside Diameter6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
FinishPolished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Thickness Range0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
TypeSeamless / ERW / Welded / Fabricated / CDW
FormRound Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
LengthSingle Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
End ProtectionPlastic Caps
Surface Finish2B, No.4, No.1, No.8 Mirror Finish for Duplex Steel Pipes, Finish as per customer Requirements
Delivery ConditionAnnealed and Pickled, Polished, Bright Annealed, Cold Drawn
ScheduleSCH5, SCH10, SCH40, STD, SCH80, SCH160
Tube EndPlain End, Beveled End, Treaded.

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