Duplex flanges

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Duplex blind flange and slip on flanges suppliers in UAE

What are duplex flanges?

The duplex material belongs to the family of stainless steel. It comes with a combination of two phases, ferrite and austenite in equal amounts. The Duplex Stainless Steel Flanges come with increased strength and high toughness. The Duplex Flange Material is also known for its high weldability, and resistance to different types of corrosions. The Duplex Flange Material has a low nickel content and thus, they are cheaper compared to the austenitic stainless steel.

The Duplex Steel Slip On Flanges show higher yield strength, compared to the typical; martensitic, austenitic, and ferritic grades. However, the working temperature of ASTM A182 Duplex Steel Threaded Flanges is quite narrow as they are prone to precipitation due to intermetallic phase, which starts occurring above 300 degrees C. The properties help the ASME SA182 Duplex Steel Socket weld Flanges to be used in industries like paper production, desalination, oil and gas, construction, etc.

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Duplex and super duplex flanges items

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Mumbai, India

Akai Metal

info@akaimetal.com
+91 9167989177

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Duplex Flanges Properties

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What are the advantages and disadvantages of duplex forged flanges?

The primary advantage of ASME B16.5 Duplex Steel Forged Flange is that it offers extremely cost-effective performance compared to the other alloys. The disadvantage is, it has low versatility, low toughness, and it also has a low range of working temperature as it is prone to precipitation.

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How to check MTC and hydro test report of the Astm a182 DSS slip on flanges?

The MTC and hydro test report of Astm a182 DSS slip on flanges contain the following:

At the top, you will get information about the manufacturer who manufactured the material.
The heat number or lot number is specified in the test. All the material properties including chemical properties, mechanical properties, etc., are linked with the heat number. These properties are known as the technical delivery conditions.
The test report also contains the material specification and grade. While reading the reports, these should be matched with the minimum requirements given in material specification for technical and delivery conditions.
The MTC should also comply with the delivery conditions, like manufacturing process, type of flange, etc.
It also has a material dimension.
The mechanical properties will be present in the MTC for each heat number.
Additional testing, like hydro test can be performed wherein the flanges are ultrasonically tested. The flanges are also tested for their microstructure.

Various types of Duplex flange

Duplex Ring Type Joint flange