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Duplex 2205 Stainless Steel contains 22% chromium and 5% nickel with the addition of molybdenum is used in applications requiring good oxidation resistance and strength. The UNS S32205 Stainless Steel is categories in both ferrite and austenitic group of stainless steel. 2205 Duplex Steel possesses excellent corrosion resistance that is far better than SS 316.
Moreover, these grade products can easily weld using standard welding methods with filler materials. Additional nitrogen provides a shielding effect during the welding process. The machinability of 2205 Duplex Steel is very low because of high strength, which is much lower than 304 grades. Furthermore, duplex steel has good formability and is used to produce 2205 Duplex Steel Buttweld Fittings and 2205 Duplex Steel Forged Fittings. so, that the main topic of this article. Before going further let’s take look on pipe fittings.
Pipe fittings are basically designed to change the direction of flow, increase/decrease bore diameter in the pipeline, branch of the flow and stop the flow. There are various pipe fittings are available in the market for sale but the most popular ones are Buttweld Fittings and Forged (Socket Weld ) Fittings. These pipe fittings are made up of several material grades like 2205 Duplex Steel.
The oldest and strongest form of pipe fitting is Buttweld Fittings. The buttweld fittings obtain a name from the technique on which this fitting is based. In this fitting, both ends are beveled and join by welding method similar to buttweld. As it provides the strongest connection they are widely used in critical applications.
Buttweld Pipe Fittings are made available in various material grades including 2205 Duplex Steel Buttweld Fittings and Super Duplex Buttweld Fittings. The Duplex Steel 2205 Buttweld Fittings have different types as follow:
Forged Fitting is the best suitable solution for small pipe diameters i.e. NPS 2. This fitting is also known as Socket Weld Fitting offer strong and smother connection between pipes. In socket weld fittings, pipe inserted into a recessed area of fittings and packed with welding practices. Like buttweld fittings, these pipe fittings are also manufactured by using different material grades. One of the famous material grades is 2205 Duplex Steel Forged Fittings.
Types of 2205 Duplex Steel Forged Fittings as follow:
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