Nickel 201 Pipe is a commercially pure nickel alloy with minimum 99% nickel in the composition. It has similar properties of the Nickel 200 alloy but has less carbon content. The reduction of carbon content makes it good for welding and avoids intergranular corrosion. Also, the need for slug removal after welding is greatly reduced. The Alloy 201 Seamless Pipes are wrought nickel and it has less absolute roughness and is very precise in its dimensions. The ASTM B161 UNS N02201 Welded Pipes belongs to the standard which governs the pipe ranging up to 10 inches. The wall thickness varies depending on the diameter of the pipe up to 219mm. The diameter and the wall thickness define the schedules and the pressure classes. The Nickel 201 Seamless Pipes are high temperature resistant and corrosion resistant. It is particularly resistant to alkalis. And this property makes it used in chemical industries and food processing industries.

Pure nickel Ni270 nickel is mainly used in reducing media and has good corrosion resistance in acidic and alkaline environments. The biggest characteristic of Nickel270 nickel alloy is the corrosion resistance of alkaline medium, such as caustic potash, caustic soda, etc., has been widely used in ionic membrane caustic soda process. Nickel has good corrosion resistance to dry fluoride. Nickel2 alloy has also been successfully used in dry chlorine and hydrogen chloride from room temperature to 540℃. It can also be used in a stationary hydrofluoric acid solution.

Alloy 200 nickel pipe is made from commercially pure wrought nickel, with good mechanical properties, excellent resistance to many corrosives. Typical applications include a variety of processing equipment, particularly to maintain product purity in handling foods, synthetic fibers, and alkalies.