Duplex UNS S31803 Pipes & Tubes are best served by Gautam Tubes in a variety of specifications, thickness, sizes and even shapes. Our products are demanded by diverse industries of the market such as chemical, refineries, power and more. We offer the products that are not only good in terms of quality but are designed as per the specific requirements that clients have made to us. Smooth finishing, dimensional accuracy, durability, and remarkable properties are the specialty of our offered pipes and tubes. Therefore, Gautam Tubes is a leading name in the market.
Our company has been serving the diverse industrial sectors since 1984. We primarily deal with nonferrous and ferrous materials that are often demanded in many industries. However, we also serve stainless steel products and Duplex UNS S31803 Pipes & Tubes are highly demanded among them. Our round the clock services and ability to serve the demands urgently and that to be concerning client’s requirements have made us the leader in the global market.
The duplex term is referred to as the grade of stainless steel that meets the properties of both austenitic and ferritic steel. Such grade steel receives dual certification and finds applications in many industries due to the dual characteristics. It is also known as UNS S32205 steel which has better corrosion resistance properties but is not preferred to work at a temperature above 300 degrees C. At such high temperature, brittle micro constituents suffer from precipitation. However, it is not good to use them at a temperature below 50 degrees C as it undergoes ductile-to-brittle transition.
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This temperature range should be kept in mind while using the Duplex UNS S31803 Pipes & Tubes. However, to perfectly use the pipes in the corrosive environment the temperature range should not be more than 150 degrees C. Pipes resist corrosion against chloride at a temperature below this.
Moreover, duplex stainless steel pipes should be heat treated at 1020-1100 degree C. However, thermal treatment at such temperature for hardening of pipes is not done. The excellent welding, forming, and machinability of this grade give superior quality of Duplex UNS S31803 Pipes & Tubes.
Standard Specification and Size Range of Duplex Steel S31803 Pipe and Tube
Specifications for Duplex Steel S31803 Pipe ASTM A790 / ASME SA790
Specifications for Duplex Steel S31803 Tube : ASTM A789 / ASME SA789
Standard : ASTM, ASME and API
Seamless Pipes & Tubes Sizes : 1 / 2" NB - 8" NB
Welded Pipes & Tubes Sizes : 6" NB - 24" NB
Outer Diameter : 6.0-630mm
Thickness : 0.3mm – 50 mm
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types : Seamless / EFW / Fabricated
Length : Single Random, Double Random & Required Length
Form : Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
Duplex Steel S31803 Seamless Pipes
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Duplex Steel S31803 Seamless Tubes
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Duplex Steel S31803 Welded Pipes
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Duplex Steel S31803 Welded Tubes
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Duplex Steel S31803 ERW Pipes
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Duplex Steel S31803 ERW Tubes
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Duplex Steel S31803 EFW Pipes
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Chemical Composition of Duplex Steel Grade S31803 Pipes & Tubes
|Duplex S31803||0.030 max||2.00 max||1.00 max||0.030 max||0.020 max||22 – 23||3.0 - 3.5||4.50 - 6.50||0.14 - 0.20||63.72 min|
Mechanical Properties of ASME SA790 Duplex Steel S31803 Pipes / SA789 Duplex Steel S31803 Tubing
|Density(g/cm 3)||Density(lb/in 3)||Melting Point(° C)||Melting Point(° F)|
|7.805 g/cm3||0.285||1420 - 1465||2588 - 2699|
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Oil and Gas
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