12Cr1MoVG high-pressure boiler pipe is a low-alloy steel pipe material. Its chemical composition contains high chromium and molybdenum elements, which makes the pipe have good high temperature resistance.
12Cr1MoVg boiler tube is an alloy high-pressure boiler tube, which belongs to alloy steel. It is based on high-quality carbon structural steel and appropriately adds one or several alloy elements to improve the mechanical properties, toughness and hardenability of the steel. Seamless steel pipes made of this type of steel are widely used in hydraulic props, high-pressure gas cylinders, high-pressure boilers, fertilizer equipment, petroleum cracking, automobile axle bushings, diesel engines, hydraulic pipe fittings and other pipes.
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GB5310 12Cr1MoVG high pressure tube Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V |
| 12Cr1MoVG | 0.18～0.24 | 0.17-0.37 | 0.40～0.70 | ≤0.03 | ≤0.03 | 0.90～1.20 | 0.25～0.35 | ≤0.20 | ≤0.30 | 0.15～0.30 |
GB5310 12Cr1MoVG high pressure boiler tube Mechanical property
| Standard | grade | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | Hardness(HB) | ||||
| GB5310 | 12Cr1MoVG | 470～640 | ≥255 | ≥ 21 | / | ||||
GB 5310 Seamless Boiler Pipe Specification
Heat treatment:
980 ℃～1 020 ℃,Normalizing,980 °C ~ 1 020 °C normalizing, when the wall thickness is greater than 30 mm, forced cooling; 720 °C ~ 760 °C tempering.
Correct use and maintenance of 12Cr1MoVG steel pipe
1. Installation: During the installation process, ensure the flatness and verticality of the steel pipe to avoid damage to the steel pipe.
2. Maintenance: Clean and maintain steel pipes regularly to maintain their cleanliness and anti-oxidation properties. Special cleaning agents and protective agents can be used for maintenance.
3. Regular inspection: Regular inspection of steel pipes, including appearance inspection, hardness testing, metallographic testing, etc., to ensure the quality and performance of steel pipes.
4. Prevent over-temperature: During operation, the temperature of the steel pipe must be strictly controlled to prevent damage or failure of the steel pipe caused by over-temperature.
5. Prevent corrosion: For steel pipes exposed to the air, anti-corrosion measures should be taken, such as coating with anti-corrosion paint, to prevent the steel pipes from being corroded.
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