High pressure boiler tubes require the selection of materials suitable for high-temperature, high-pressure, and corrosive environments to ensure their safety and reliability. The following are some common material options for high-pressure boiler tubes:

Carbon Steel: Low or medium carbon steel is widely used in some low-pressure and medium pressure boilers. The main advantages of carbon steel pipes are low cost and easy processing, but they may undergo corrosion and oxidation in high temperature and high pressure environments.

Alloy Steel: Alloy steel has high strength and heat resistance, making it suitable for use in high-temperature and high-pressure boilers. Commonly used alloying elements include chromium, molybdenum, and cobalt, which provide oxidation and corrosion resistance.

Stainless steel: Stainless steel is a type of steel with excellent corrosion resistance, suitable for boiler environments that require high corrosion resistance, such as in the chemical and food processing industries.

Chromium Molybdenum Steel: Chromium molybdenum steel is an alloy steel that typically contains chromium and molybdenum, and has excellent high-temperature strength and corrosion resistance. It is commonly used in high-temperature and high-pressure boilers.

Nickel Alloys: Nickel alloys have high temperature and corrosion resistance properties, making them suitable for use in high-temperature and high-pressure boilers, such as in nuclear power plants.

Titanium Alloys: Titanium alloys are used in certain special applications for high-pressure boilers due to their corrosion resistance and lightweight properties.

Graphite: Graphite materials are commonly used in some special chemical process boilers and can withstand high temperatures and corrosion.

Composite Materials: Some advanced composite materials can be used in high-temperature and high-pressure boilers, with the characteristics of lightweight, high strength, and corrosion resistance.

The selection of materials depends on the specific application, operating conditions, and budget of the boiler. High pressure boiler tube manufacturers usually need to comply with relevant standards and regulations to ensure that the selected materials meet safety and performance requirements. In addition, the design, manufacturing, and maintenance of boiler tubes should also strictly follow relevant specifications and regulations to ensure their safe and reliable operation.