High-pressure boiler tubes are pipes used in boiler systems to withstand high temperatures and high pressures, and are usually required to have high strength, high temperature resistance and corrosion resistance.
The materials of high-pressure boiler tubes usually include the following:
Carbon steel: such as 20G (GB/T 3087 standard) and 20# (GB/T 700 standard). This type of steel has a high carbon content and has good strength and heat resistance.
Alloy steel: such as 15CrMo (GB/T 3077 standard), 12Cr1MoVG (GB/T 5310 standard) and 35CrMo (GB/T 3077 standard). These steels contain alloy elements such as chromium, molybdenum, tungsten, etc., which enhance the high temperature resistance, oxidation resistance and corrosion resistance.
Stainless steel: such as 304, 316, etc. These stainless steel alloys have excellent corrosion resistance and high temperature resistance, and are suitable for more demanding environments.
Common high-pressure boiler tube steel grades include:
20G: A low-alloy high-strength steel, mainly used in medium and low pressure boilers.
15CrMo: has good high temperature strength and oxidation resistance, suitable for medium and high pressure boilers.
12Cr1MoVG: suitable for high temperature and high pressure boilers, with high temperature resistance and strength.
X20CrMoV12-1: mainly used for ultra-high pressure boilers, with excellent strength and toughness.
Common high pressure boiler tube standards are:
GB/T 3087: Carbon steel tube standard for low and medium pressure boilers.
GB/T 5310: Alloy steel tube standard for high pressure boilers.
ASTM A106: American standard, suitable for carbon steel tubes in high temperature and high pressure environments.
EN 10216: European standard, covering a variety of types of boiler tubes, including carbon steel and alloy steel tubes.
High pressure boiler tubes have the following characteristics:
High temperature resistance: can maintain stable mechanical properties under high temperature environment.
High strength: can withstand internal pressure under high pressure conditions.
Corrosion resistance: This property is particularly important for some alloy steel materials to resist internal corrosion of the boiler.
Good toughness: can still maintain good toughness under high temperature conditions to avoid fracture.
High-pressure boiler tubes are mainly used for:
Power plant boilers: steam pipes for high-temperature and high-pressure boilers in power production.
Fertilizer industry: high-temperature and high-pressure reaction equipment involved in the fertilizer production process.
Petrochemical industry: pipeline systems in oil refining and chemical reaction processes.
Nuclear power plants: pipelines for nuclear reactor systems in nuclear power plants.
The selection and application of these pipes need to be determined based on specific working conditions and requirements to ensure safety and performance reliability.
