Regarding the seamless steel pipe (325 * 12, GB/T6479-2013) used in Q345D high-pressure fertilizer equipment, the following is a detailed explanation:

Chemical composition:

The chemical composition of Q345D seamless steel pipe mainly includes elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum, etc. Among them, the mass fraction of carbon element is generally between 0.15% and 0.20%, the mass fraction of silicon element is generally between 0.30% and 0.65%, and the mass fraction of manganese element is generally between 1.00% and 1.70%.

Performance characteristics:

High strength: Q345D seamless steel pipe has high tensile strength and yield strength, and can withstand large pressures and loads.

High toughness: This steel pipe has good impact toughness and elongation, and can maintain stable performance in extreme working environments.

Corrosion resistance: The surface has undergone special treatment and has good corrosion resistance, which can resist corrosive media generated during fertilizer production.

Execution standards:

GB/T6479-2013 is a national standard for seamless steel pipes used in high-pressure fertilizer pipelines. This standard specifies the classification, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificate requirements of seamless steel pipes for high-pressure fertilizer pipelines.

Application Material:

Mainly used in the manufacturing of high-pressure fertilizer equipment, chemical equipment, mining equipment and other fields. The advantages of Q345D seamless steel pipe, such as high strength, high toughness, and corrosion resistance, have made it widely used in many engineering projects.

Price:

Prices are influenced by various factors, including raw material prices, production costs, market supply and demand, etc. The specific price needs to be negotiated and determined with the supplier.

In recent years, the international and domestic seamless steel pipe market:

The seamless steel pipe industry has faced some challenges in recent years, including low prices and overcapacity. Especially in 2024, the price of seamless pipes showed a sluggish trend, with a year-on-year decrease in the price index. At the same time, the problem of overcapacity is becoming increasingly serious, with a national production capacity of 40 million tons, far exceeding consumer demand.

However, despite these challenges, there are still some development opportunities for the seamless steel pipe industry. For example, as the country's requirements for environmental protection and energy conservation become increasingly high, the environmental and energy-saving performance of seamless steel pipes will become an important competitive advantage. In addition, the application of seamless steel pipes in new energy, new materials and other fields will continue to expand, bringing new growth points to the industry.

The above information is for reference only. If you need to learn more about the seamless steel pipes used in Q345D high-pressure fertilizer equipment and the seamless steel pipe industry, it is recommended to consult experts in the relevant field or consult the latest research reports in the relevant industry.