Use of Duplex Stainless Steel Pipes in Various Industries

Pipes find use in many industrial applications. They form the artery through which the oil, gas and other fluids flow. It improves the work function. This is because it reduces the effort needed to transport the material from one place to the other.

Different kinds of pipes

Let us look at the different types of pipes. The ones that are in use in most of the big industrial sectors are the stainless steel pipe, galvanized pipes, brass pipes and copper pipes. Stainless steel pipes are popular for their superior durability and high strength. One type of stainless steel pipe is the Duplex stainless steel pipe.

The material of the Duplex stainless steel is half ferritic and half austenitic grades. This is why they share the physical properties of both the grades. Duplex stainless steels thus have better resistance to cracking. We find this failure in austenitic grades due to chloride stress corrosion. It also has improved resistance to localized corrosion.

Making the seamless steel tube

You can see the 304 Stainless Steel Seamless Tube wholesale Manufacturers and find out about this grade of seamless tube. We form this by piercing, gun-drilling or extrusion. In piercing, a stainless steel metal bar forms the base for making the tube. We pierce a hole through this bar so that what remains is the seamless tube. The 304 alloy belongs to the 300 series. This steel has 8 percent nickel and 18 percent chromium. A little carbon is also present.

Due to its versatility, this tube finds use in many industries. These include steam exhausts, cooling towers, pipelines, condensers, heat exchangers and boilers. You will also find them in use in electric generation plants. They find use in fertilizer and chemical plants also due to the inert nature. They are able to resist the action of chemical well.

Superiority of the Duplex steel tube

The Duplex stainless steel has about twice the yield strength of austenitic grades. This allows for the design of thinner gauge of tubes. The higher hardness gives us better wear resistance when used in high precision tubes. It is easy to weld and form the Duplex tubes. One well-known type is from the UNS S32205 Duplex Stainless Steel Pipes Manufacturers Mumbai. This is a two-phase alloy containing as in the above both austenitic and ferritic phases. In this alloy, we see the main constituents to be molybdenum, nickel and chromium.

Due to the presence of molybdenum, the formation of carbide gets prevented. It has an exceptional tensile strength and so it finds varied application in many industries. But, it is well-known for its superior resistance to stress cracking. Also, it resists corrosion very well. The grouping of the Duplex stainless steel occurs according to the proportion of molybdenum, nickel and chromium. Thus, you have the hyper duplex, super duplex, duplex and lean duplex. You find it in use in seawater handling systems, pipes and fittings. You also see it in use in structural tanks, umbilicals and paper-making equipment.

You get great savings in cost and the design and fabrication are also easy. The choice of the type of duplex pipe depends on the application for which you use the pipe.