Application fields of special alloys in the petroleum industry:

Petroleum exploration and development is a multidisciplinary, technology intensive, and capital intensive industry that requires the consumption of a large number of metallurgical materials and products with different properties and uses. With the development of ultra deep and ultra inclined oil and gas wells, as well as H2S containing wells The development of oil and gas fields such as CO2 and Cl -, as well as the increasing application of stainless steel materials with anti-corrosion performance requirements.

The development of the petrochemical industry itself and the updating of petrochemical equipment have put forward higher requirements for the quality and performance of stainless steel. The requirements for stainless steel to be corrosion-resistant, high-temperature resistant, and low-temperature resistant have not been relaxed but stricter. At the same time, the petrochemical industry is also a high-temperature, high-pressure, and toxic industry. The consequences of mixing materials with other industries are not obvious. Once the quality of stainless steel materials in the petrochemical industry cannot be guaranteed, the consequences will be unimaginable. Therefore, domestic stainless steel enterprises, especially steel pipe enterprises, should quickly improve the technical content and added value of their products, and occupy the high-end product market.

The requirements for stainless steel in the petrochemical industry mainly include corrosion resistance, including chloride, sulfide, and other salt corrosion; High temperature and low temperature resistance, etc. Stainless steel used for crude oil exploration and development requires resistance to carbon dioxide and hydrogen sulfide corrosion. At present, the main materials commonly used in crude oil exploration and development in China are 3Cr, 9Cr, 13Cr, super 13Cr, as well as stainless steel thick walled non-magnetic drill rods and drill rods containing Cr22 and above.

The potential market in the petrochemical industry is for large-diameter petroleum cracking furnace pipes and low-temperature conveying pipes. Due to their special requirements for heat and corrosion resistance and inconvenient equipment installation and maintenance, they require a long service life of the equipment. It is necessary to optimize the mechanical and service performance of the pipes through material composition control and special heat treatment methods. Another potential market is specialized steel pipes for the fertilizer industry (urea, phosphate fertilizer), with the main steel grades being 316Lmod and 2re69

Commonly used in reactors, oil well pipes, polished rods in corrosive oil wells, spiral pipes in petrochemical furnaces, and components on oil and gas drilling equipment in petrochemical equipment.

Special alloys commonly used in the petroleum industry include:

Stainless steel: 316LN, 1.4529, 1.4539, 254SMO, 654SMO

High temperature alloy: GH4049

Nickel based alloys: Alloy 31, Alloy 926, Incoloy 925, Inconel 617, Nickel 201, etc

Corrosion resistant alloy: NS112 NS322、NS333、NS334

Various materials are widely used in food machinery and equipment. In addition to various metal and alloy materials, there are also wood, stone, diamond, ceramics, enamel, glass, textiles, and various organic synthetic materials. The process conditions for food production are quite complex, with different requirements for materials. It is necessary to master the various properties of the materials in order to make the right choice and achieve good usage and economic benefits.