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Grade | Chemical Composition/% | |||||||
C | Si | Mn | Cr | Mo | V | P | S | |
Max. | ||||||||
20G | 0.17 - 0.23 | 0.17 - 0.37 | 0.35 - 0.65 | - | - | - | 0.025 | 0.015 |
20MnG | 0.17 - 0.23 | 0.17 - 0.37 | 0.70 - 1.00 | - | - | - | 0.025 | 0.015 |
25MnG | 0.22 - 0.27 | 0.17 - 0.37 | 0.70 - 1.00 | - | - | - | 0.025 | 0.015 |
15MoG | 0.12 - 0.20 | 0.17 - 0.37 | 0.40 - 0.80 | - | 0.25 - 0.35 | 0.025 | 0.015 | |
20MoG | 0.15 - 0.25 | 0.17 - 0.37 | 0.40 - 0.80 | - | 0.44 - 0.65 | - | 0.025 | 0.015 |
12CrMoG | 0.08 - 0.15 | 0.17 - 0.37 | 0.40 - 0.70 | 0.40 - 0.70 | 0.40 - 0.55 | - | 0.025 | 0.015 |
15CrMoG | 0.12 - 0.18 | 0.17 - 0.37 | 0.40 - 0.70 | 0.80 - 1.10 | 0.40 - 0.55 | - | 0.025 | 0.015 |
12Cr2MoG | 0.08 - 0.15 | <0.50 | 0.40 - 0.60 | 2.00 - 2.50 | 0.90 - 1.13 | - | 0.025 | 0.015 |
12Cr1MoVG | 0.08 - 0.15 | 0.17 - 0.37 | 0.40 - 0.70 | 0.90 - 1.20 | 0.25 - 0.35 | 0.15 - 0.30 | 0.025 | 0.01 |
Grade | Property | Impaact (kv2)/J | Hardness | |||||
Tensile strength MPa | Yield strength MPa | Elongation A/ % | L | T | HBW | HV | ||
Longitudinal | Transverse | |||||||
Min. | ||||||||
20G | 410-550 | 245 | 24 | 22 | 40 | 27 | 120 -160 | 120-160 |
20MnG | 415-560 | 240 | 22 | 20 | 40 | 27 | 125 -170 | 125-170 |
25MnG | 485-640 | 275 | 20 | 18 | 40 | 27 | 130-180 | 130-180 |
15MoG | 450-600 | 270 | 22 | 20 | 40 | 27 | 125 -180 | 125-180 |
20MoG | 415-665 | 220 | 22 | 20 | 40 | 27 | 125-180 | 125-180 |
12CrMoG | 410-560 | 205 | 21 | 19 | 40 | 27 | 125 -170 | 125-170 |
15CrMoG | 440-640 | 295 | 21 | 19 | 40 | 27 | 125 -170 | 125-170 |
12Cr2MoG | 450-600 | 280 | 22 | 20 | 40 | 27 | 125-180 | 125-180 |
I2Cr1MoVG | 470-640 | 255 | 21 | 19 | 40 | 27 | 135-195 | 135-195 |
GB 5310 Steel pipe is widely used in petrochemical industry, thermal power generation and other fields, with excellent high temperature and high pressure resistance, can meet the use of high temperature and high pressure conditions. The following will introduce the application of GB 5310 steel pipe from two aspects of petrochemical industry and thermal power generation respectively.
1. petrochemical engineering
In the petrochemical industry, the high temperature and high pressure conditions are inevitable. GB 5310 Steel pipe, as a high strength, high performance steel pipe material, is widely used in petrochemical plants. For example, in the process of oil cracking, the high temperature and high pressure environment is very strict, and GB 5310 steel pipe can meet this requirement to ensure the smooth progress of the oil cracking process. In addition, in the process of chemical reaction, GB 5310 steel pipe can also provide stable high temperature and high pressure conditions to ensure the smooth progress of chemical reaction.
2. thermal power
In the thermal power generation industry, high temperature and high pressure conditions also exist. GB 5310 Steel pipe, as a high strength, high performance steel pipe material, is widely used in the boiler pipeline of thermal power plants. For example, in the superheater, reheater and other high temperature and high pressure parts of the boiler, it is necessary to use materials that can withstand high temperature and high pressure, and GB 5310 steel pipe can meet this requirement to ensure the normal operation of the boiler. In addition, in the high pressure cylinder and other parts of the steam turbine, GB 5310 steel pipe can also provide stable high temperature and high pressure conditions to ensure the normal operation of the steam turbine.
In short, GB 5310 steel pipe, as a high-performance steel pipe material, has been widely used in petrochemical industry, thermal power generation and other fields. Its excellent performance and high reliability provide a strong guarantee for the normal operation of these industries. With the continuous progress of technology and the continuous improvement of application demand, the application prospect of GB 5310 steel pipe will be broader.