Applications of duplex stainless steel

As a high-performance material, duplex stainless steel has been widely used in many fields due to its high strength, high corrosion resistance and excellent welding performance. The following is a detailed summary of its application scenarios:

First, the chemical industry

Duplex stainless steel is widely used in the chemical industry, because it is almost not destroyed by various corrosives, so it is used in large quantities to manufacture a variety of equipment and containers, such as fertilizer production equipment, chlorine chemical equipment, organic synthesis equipment and so on. These equipments often need to withstand high temperature, high pressure and corrosive media, and duplex stainless steel’s stable chemical structure and excellent corrosion resistance make it an ideal choice.

Second, oil and gas field

In the oil and gas field, the application of duplex stainless steel is also gradually increasing. It is mainly used in oil well casing, oil extraction pipeline, natural gas transmission pipeline, chemical plant and so on. Especially in the marine oil and gas development and offshore platform construction, duplex stainless steel has become an indispensable material by virtue of its excellent resistance to seawater corrosion and high-temperature pressure resistance.

Third, marine engineering

Duplex stainless steel is also widely used in marine engineering. Because of its excellent corrosion resistance, especially for chloride-induced pitting and crevice corrosion has a good resistance, so it is widely used in the manufacture of seawater desalination plants and water treatment systems in the heat exchanger, piping, pump shells and other key components. In addition, in the construction of offshore drilling platforms and their ancillary facilities, such as conduit racks, support structures, deck coverings, etc., duplex stainless steel has also become an ideal choice by virtue of its high strength and good welding performance.

Fourth, the medical field

In the medical field, duplex stainless steel also plays an important role. It is used in the manufacture of surgical instruments and prostheses implanted in the human body, such as orthopedic implants, artificial joints, cardiac surgery and dental implant equipment. These devices need to have excellent corrosion resistance and toughness, and duplex stainless steel just to meet these requirements.

Five, the construction field

Duplex stainless steel in the field of construction applications are equally compelling. Because of its beautiful, corrosion-resistant, easy to maintain, low maintenance costs and long life and other characteristics, it is widely used for indoor and outdoor decorative and structural components, such as architectural doors, windows, wall decorations, guardrails, railings, escalators, elevators and so on. In addition, many bridges around the world have begun to use duplex stainless steel, such as the York Bridge in the United Kingdom, the Aparte Bridge in Sweden and the Brooklyn Bridge in New York. These bridges have better fatigue resistance and longer service life due to the use of duplex stainless steel.

Six, paper and food processing field

In the field of paper and food processing, duplex stainless steel is also favored for its good corrosion resistance and hygienic properties. It is widely used in the manufacture of paper-making equipment and food processing equipment to ensure the quality of product health and production efficiency.

Seven, other areas

In addition to the above areas, duplex stainless steel is also used in environmental protection engineering, rail transportation, water conservancy engineering, tanks, plate heat exchangers and many other areas. With the continuous progress of technology and people’s continuous improvement of material performance requirements, duplex stainless steel applications will continue to expand.

In summary, duplex stainless steel has been widely used in many fields by virtue of its excellent performance. With the continuous improvement of modern industrial requirements and the continuous progress of technology, the application prospects of duplex stainless steel will be more broad.