2205 Duplex Stainless Steel ManufacturersZTE Yide Stainless Steel today to share with you an article in a stainless steel journal.

Abstract: Stainless steel, including duplex stainless steel and super duplex stainless steel, brings significant economic benefits to the offshore oil and gas industry. Compared with other materials, it is lighter, stronger, more resistant to corrosion, and has a lower life cycle cost.

Offshore projects are extremely important for the global production and processing of hydrocarbons. In some of the most extreme environments, offshore crude oil accounts for nearly 30% of global crude oil production. However, the salinized marine environment requires high safety and life standards for offshore platforms. Infrastructure for marine and offshore applications is often susceptible to large amounts of airborne and water-borne salt, and plain carbon steel structures are often subject to corrosion and require regular maintenance and upkeep.

On the other hand, stainless steel is a reliable guarantee for the selection of robust materials for heavy offshore installations. The inherent corrosion resistance of the metal provides a high strength-to-weight ratio for infrastructure, even in marine and coastal environmental conditions. Stainless steel also ensures a long design life and an impressive ability to withstand extreme pressure and high temperatures. It is worth noting that by using stainless steel, the expected service life of offshore structures can be increased by nearly five times compared to its competitors.

Service life cycle cost

In addition to longer service life, stainless steel is more qualified for offshore applications due to the increasing emphasis on life cycle cost minimums (LCC) in construction and construction. This concept underscores the strong need to develop new types of infrastructure that are highly durable and do not require extensive maintenance or repair.

Weight reduction is also the main driving force for installing offshore structures. The reduced weight means that the structure is cheaper to build, while allowing for the addition of drill pipe and production equipment for oil and gas production and exploration.

Steel grade used in offshore facilities

SS316L stainless steel is the main austenitic stainless steel used in offshore facilities. It can enhance the strength at high temperatures and protect the structure from severe acid environment. The austenitic stainless steel containing 6% molybdenum is usually used for permanent immersion in seawater. However, due to fluctuations in global nickel prices over the past few years, duplex stainless steels have widely replaced austenitic stainless steels. Duplex stainless steel combines excellent mechanical properties and stress corrosion cracking resistance, making it an ideal choice for offshore applications. UNS S32205 stainless steel is the most commonly used duplex stainless steel for offshore installations.

Although duplex stainless steel is outstanding in offshore heavy facilities, the new generation super duplex stainless steel is comparable to austenitic stainless steel in seawater corrosion resistance. In addition, the mechanical properties of these steels are significantly improved over dual phase steels. These super dual phase steels are characterized by a high content of nitrogen, chromium, molybdenum and nickel, which helps to improve their resistance to pitting and crevice corrosion. For example, UNS S32750 and UNS S32760 steel grades are used for underwater components of more aggressive offshore facilities.

While we note that stainless steel is a better alternative to carbon steel, it is critical to understand that selecting the best stainless steel grade for your specific needs is critical to the cost-effectiveness and durability of your offshore facility. As the largest stainless steel producer in India, Jindal Stainless Steel Co., Ltd. has a dedicated research and development organization, focusing on the production of high-end steel grades, and occupies a major share in the consumption of all similar products in the country.

Application of stainless steel in the sea

Subsea components: pipes and grids for oil transmission, sewage and drainage, risers for oil transmission platforms, heat exchangers for ships and coastal power plants, and equipment installed on the hull.

Platform structural components: pumps, winches, storage tanks, process vessels, explosion doors, umbilical pipes, steel bars, cable trays, stairs, treads, pedestrian passages, gas coolers, gravity separators, etc.

Ship deck components, such as ship deck eyelets, anchor cable supports, shackles, etc.

Coast (on land) handrails, ladders, lampposts, etc.

The University of Manchester Department of Metallurgy and Materials Science/UMSIT conducted a study entitled "Development of stainless steel applications in offshore pipeline systems". The results showed that the use of super duplex stainless steel in the sprinkler system of offshore projects can reduce weight and reduce installation size compared with 90/10 copper nickel (Cu-Ni) alloy. The spray system requires minimum nozzle pressure and water flow. Compared with the 90/10 Cu-Ni system, the super duplex stainless steel system uses fewer pipes to control the water flow rate, so the dry weight of the super duplex stainless steel spray system can be reduced by about 15%.

Figure 1 Stainless Steel Valves and Pipes in Offshore Projects

In addition, the study found that due to the higher strength of super duplex stainless steel, the piping required for installation is reduced by about 38%, which also means that if super duplex stainless steel is developed for applications such as sprinklers and fire sprinkler systems, it can be further reduced by about 20%.

Therefore, compared with the 90/10 Cu-Ni alloy, a set of standard super duplex stainless steel spray system weight and pipe requirements are reduced, essentially becoming a cost-effective alternative. The research results show that the effective cost reduction of the super duplex stainless steel pipe material used to develop the standard spray system will be close to half of the 90/10 Cu-Ni alloy.

Figure 2 It is important to select the best stainless steel grade for offshore equipment to meet the specific requirements of cost-effective and long life.

The way forward

Corrosion has become a major obstacle for the offshore oil and gas industry. Nowadays, many corrosion-resistant stainless steel alloys have been developed, and the value of duplex stainless steel in offshore applications is obvious to all. With their low nickel content, these high-end duplex stainless steel grades are ideal for developing India's offshore landscape. Given India's growing fuel needs, the country needs to build dynamic coastal and offshore infrastructure for offshore projects. This will include the construction of offshore platforms and associated logistics, including assistance to coastal infrastructure. Furthermore, as a metal, stainless steel is a model for achieving sustainable and clean energy production. It is encouraging that Indian industry has developed stainless steel for a large number of applications and has achieved self-sufficiency.

The Indian Market

India is the world's third largest consumer of oil and energy, and oil and gas remain India's main imports. While driving the growth of various industries, oil and gas play an important role in building strong infrastructure applications in the country. With the tireless efforts of the government and the domestic stainless steel industry, it is now possible to use stainless steel production to solve domestic energy access, energy efficiency, energy sustainability and energy security.

India is the world's second largest producer and consumer of stainless steel. With the acceleration of the growth rate, stainless steel has become the fastest growing metal in the world, keeping pace with the global economy. Jindal Stainless Steel Co., Ltd. (Indal Stainless) continues to strengthen the local industry by producing the highest quality stainless steel grades, providing professional training to local manufacturers, and mediating with policy makers to ensure a level playing field for local industries. With strong economic growth, India's demand for energy will also increase exponentially, which will require the expansion of the country's existing offshore infrastructure. As Indian stainless steel manufacturers are increasingly focusing on developing higher grades of stainless steel, using indigenous resources to achieve efficient infrastructure and self-sufficient ecosystems, offshore drilling and processing become possible.

Disclaimer: This article is transferred from "Stainless" 2022 Issue 3. The purpose of reprinting is to convey more information. It does not mean that the 2205 duplex stainless steel manufacturer Zhongxing Yide Stainless Steel Website agrees with its views and is responsible for its authenticity. The content of the article is only For reference. If copyright issues are involved, please call 13606188783 to deal with them as soon as possible.

The 2205 duplex stainless steel manufacturer Zhongxing Yide Stainless Steel was established in 2012. It is located in the Andali Building near the Dongfang Steel City, Wuxi, Jiangsu Province, a well-known stainless steel market in the country. It has an excellent geographical location and convenient transportation. It is a company that specializes in stainless steel raw materials and integrates storage, A comprehensive enterprise integrating processing and trade distribution.

2205 duplex stainless steel manufacturer Zhongxing Yide Stainless Steel specializes in 304L stainless steel, 316L stainless steel, 317L stainless steel, 409L stainless steel, 436L stainless steel, 904L stainless steel, 301L stainless steel, 201 stainless steel, 430 stainless steel, 309S stainless steel, 310S stainless steel, 321 stainless steel and other stainless steel plates, stainless steel coils, stainless steel strips, stainless steel flat steel, stock more than 1000 tons of materials, complete specifications, sufficient supply. At the same time, 2205 duplex stainless steel manufacturer Zhongxing Yide Stainless Steel can provide various stainless steel plate processing services according to customer requirements: Kaiping, slitting, wire drawing, mirror, oil grinding, polishing, punching, bending, leveling, slitting, cutting, rolling, punching, etc.