The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made. The main applications of alloy steel pipe is power station, nuclear power plant, high pressure boiler, high temperature superheater and re-heater coil etc. of high temperature pipeline and equipments.
The material of alloy steel pipe is roughly: 16-50 mn, 27 simn, 40 cr, 12-42 crmo 16 mn 12 cr1mov T91 27 simn 30 crmo 15 crmo 20 g Cr9Mo 10 crmo910 15 mo3 15 35 crmov 45 crmov crmo, 15 crmog, 12 crmov, 45 crnimo 45 50 cr, cr, etc.
Some nickel alloys can endure extreme conditions and high temperatures. For example, nickel-chromium alloys that are comprised of over 15% chromium have been used at temperatures that can exceed 760 celsius. This ability to withstand heat makes nickel alloy pipe a go-to material in machines or structures that produce extreme temperatures.
When metals encounter oxygen, they can undergo oxidation reactions. This, in turn, causes corrosion.
Nickel, however, has a slow rate of oxidation, making nickel alloys more resistant to corrosion than most metals. This allows them to maintain their integrity for longer than other metals, especially in marine environments where corrosion is particularly problematic.
Some nickel-iron alloys have an extremely low rate of thermal expansion or a very consistent and predictable pattern of expansion in specific temperature ranges. This makes them useful when you need a pipe that can maintain a uniform shape and size despite hot environments.
For example, Iron-36% nickel alloy almost doesn’t expand at all during moderate changes in temperatures. And when you add cobalt to the nickel and iron, you get a high-strength alloy that has a constant modulus of elasticity and a low coefficient of expansion.
Sometimes, a metallic material is needed that can return to its previous shape when it experiences heat. This type of material is called a shape memory alloy, and there are very few available on the market. Some nickel alloys, however, have this characteristic, with nickel-titanium alloys being one of the most prominent shape memory alloys.
Nickel-iron alloys also have unique and interesting magnetic permeability characteristics. This has allowed them to become an integral component in designs for switchgear as well as direct current motors and generators.
These advantages have made nickel alloys a popular material in a number of applications, including:
• The petrochemical industry
• Aircraft turbines
• Medical engineering
• Steam turbine power plants
• Nuclear power plants
The advantages of alloy steel pipe: 100% recycled, it is suitable for the national strategy of environmental protection, energy-saving and resource-saving. Therefore, the national policy encourages the expansion of the high pressure alloy steel pipe applications.
At present, the proportion of the total alloy steel tube is half of the developed countries. The applications of alloy steel pipe provide a broad space for the industry development. According to the research of the China association of special steel alloy pipe expert group, our country’s high pressure alloy steel pipe material demand grows by an average of up to 10-12%.