Duplex Steel Seamless Tube

What is Duplex Steel Seamless Tube, and what are its key features and advantages?

Duplex Steel Seamless Tube is a type of stainless steel tubing widely used in various industries for its exceptional properties. It is composed of a duplex microstructure, combining both austenite and ferrite phases, which provides a unique balance of strength, corrosion resistance, and durability. One of Duplex Steel Seamless Tube's key features is its excellent corrosion resistance, making it suitable for applications in aggressive environments such as offshore oil and gas production, chemical processing, and marine applications.

Additionally, this seamless tube offers high tensile strength, good weldability, and enhanced resistance to stress corrosion cracking, making it a preferred choice for critical applications. Moreover, the duplex microstructure provides improved resistance to pitting and crevice corrosion, contributing to the longevity and reliability of the tube. Duplex Steel Seamless Tube stands out for its mechanical properties, corrosion resistance, and overall performance, making it an ideal choice for demanding industrial applications.

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What are the typical applications and industries where Duplex Steel Seamless Tubes are commonly used?

Due to their versatile properties, Duplex Steel Seamless Tubes find widespread use across various industries and applications. One of the primary industries that extensively employs these tubes is the oil and gas sector, particularly in offshore platforms, subsea pipelines, and refineries, where they are exposed to harsh and corrosive environments. The chemical processing industry also relies on Duplex Steel Seamless Tubes for applications involving the handling of corrosive chemicals, acids, and solvents.

Additionally, these tubes are commonly employed in the desalination and water treatment industry, where their excellent corrosion resistance and durability make them ideal for handling seawater and brine solutions. Other prominent applications include heat exchangers, power generation plants, pulp and paper manufacturing, and food processing equipment. The unique combination of strength, corrosion resistance, and reliability of Duplex Steel Seamless Tubes makes them a preferred choice in numerous critical industries.

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Drawing/ Floating Process

Pulling a metal bar, rod, or wire through the entirety of a die to change its finish, shape, size, and/or mechanical qualities is known as floating or drawing. The tube's outer, inner, and wall thicknesses are all reduced via the tube drawing procedure. DSS tubes benefit from maintaining the integrity of their surface.

Continuous Seamless Tube Mills

The production of seamless tubes has been transformed by continuous tube mills. These mills do away with the necessity for forging welding or filler metal, in contrast to conventional procedures. With the use of this technology, seamless pipes and tubes may be produced continuously, increasing productivity while lowering costs and improving efficiency.

Continuous Casting

A notable advancement in the production of seamless tubes is continuous casting. The metal is solidified into a continuous billet through the continuous pouring of molten metal into a water-cooled mould. Better uniformity and enhanced mechanical qualities are guaranteed by this continuous casting technique for the tubes.

Annealing

Metal is heated above the point of re-crystallization and cooled to room temperature during the annealing process. The molecular bonds in metal tighten when it is shaped, making it rigid. The metal is put through an annealing process to regain its ductility.

Sinking Process

Tube sinking is a drawing technique that reduces the diameter of tubes. In this drawing technique, a tube is run through a die without the need of a mandrel. Good inner surface quality is not ensured when using a mandrel. The die angel determines the integrity of the outer surface. The die being used produces a uniform surface. A tube can be significantly smaller than it was originally. When cost is a factor, tube sinking is ideal.

Inspection and Testing

Before sending our items to our consumers, we conduct inspection procedures to verify their integrity.

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