Power Station Boiler Field

1. Core Component Manufacturing

• Overheater and reheaterWithstanding steam temperatures above 600°C, the 12Cr1MoVG steel has significantly improved its creep resistance by optimizing grain size (ASTM E112 rating ≥ 8) and adding vanadium (V 0.15-0.30%), extending its lifespan threefold compared to standard carbon steel pipes.

• Regenerative BoilerIn the low-temperature range (≤450℃), we optimize thermal efficiency, with a low thermal expansion coefficient (12×10⁻⁶/℃) that reduces thermal stress concentration and minimizes the risk of cracking.

• Container PipelineAs a critical connecting component of high-pressure boilers, it must withstand the impact of high-temperature, high-pressure steam. The long-lasting strength of 12Cr1MoVG (≥100MPa at 550℃) ensures its safe and long-term operation.

• Huaneng Ruijin Power Plant Ultra-Supercritical UnitUtilizing a 12Cr1MoVG main steam pipe, a 30% reduction in wall thickness allows for a temperature increase to 620°C, enhancing thermal efficiency by 1.5%, with each unit reducing CO₂ emissions by approximately 150,000 tons annually.

• Zhenhai Refining & Chemical Co. heats up furnace renovationAfter upgrading the furnace tube to 12Cr1MoVG, the service life has been extended from 3 years to 10 years, with a 40% reduction in the cost per tube and a 70% decrease in maintenance downtime.

Section II: Petrochemical Industry Sector

1. High-Temperature, High-Pressure Equipment

• Synthetic Ammonia Plant Converter TubeUnder 1000°C and 3MPa conditions, the 12Cr1MoVG alloy's carburization resistance is enhanced by the addition of molybdenum (Mo ≤ 0.15%), extending its service life from 3 years to 8 years.

• Refining Cracking FurnaceUnder 550°C and 8MPa conditions, the annual growth of the antioxidant layer thickness is only 0.02mm, significantly lower than the industry standard of 0.05mm/year.

• Catalytic Cracking UnitThe corrosion resistance of 12Cr1MoVG against sulfur-containing mediums ensures a pitting corrosion rate of ≤0.02mm/year, meeting the demands for long-term operation.

• High-temperature steam pipelineWhen transporting steam above 500°C, the tensile strength (470-640MPa) and yield strength (≥255MPa) of 12Cr1MoVG ensure the pipeline does not deform.