Application fields of special alloys in the petroleum industry of stainless steel pipes
Petroleum exploration and development is a multidisciplinary, technology- and capital-intensive industry that requires a large amount of metallurgical materials and metallurgical products with different properties and uses. With the development of ultra-deep and ultra-inclined oil and gas wells and oil and gas fields containing H2S, CO2, Cl-, etc., the application of stainless steel materials with anti-corrosion requirements is increasing.
The development of the petrochemical industry itself and the renewal of petrochemical equipment have put forward higher requirements on the quality and performance of stainless steel, requiring stainless steel to be corrosion-resistant and resistant to high and low temperatures. The conditions are not relaxed but more stringent. At the same time, the petrochemical industry is a high-temperature, high-pressure, and toxic industry. It is different from other industries. The consequences of mixed use of materials are not obvious. Once the quality of stainless steel materials in the petrochemical industry cannot be guaranteed, the consequences will be disastrous. Therefore, domestic stainless steel companies, especially steel pipe companies, should improve the technical content and added value of their products as soon as possible to occupy the high-end product market.
The potential market of petrochemical industry is large-diameter pipes for oil cracking furnaces and low-temperature transmission pipes. Due to their special heat and corrosion resistance requirements and inconvenient equipment installation and maintenance, the equipment is required to have a long service life cycle, and the mechanical properties and performance of the pipes need to be optimized through material composition control and special heat treatment methods. Another potential market is special steel pipes for fertilizer industry (urea, phosphate fertilizer), the main steel grades are 316Lmod and 2re69
Commonly used in reactors in petrochemical equipment, oil well pipes, polished rods in corrosive oil wells, spiral pipes in petrochemical furnaces, and parts on oil and gas drilling equipment, etc.
Common special alloys used in the petroleum industry:
Stainless steel: 316LN, 1.4529, 1.4539, 254SMO, 654SMO, etc.
High temperature alloy: GH4049
Nickel-based alloy: Alloy 31, Alloy 926, Incoloy 925, Inconel 617, Nickel 201, etc.
Corrosion-resistant alloy: NS112, NS322, NS333, NS334
Post time: Sep-06-2024