shipbuilding

The increase in the construction of chemical tankers for LNG, LPG and stainless steel tanks has led to a significant increase in the amount of stainless steel used in the marine industry.
In the past, in the construction of ordinary ships, the use of stainless materials was mainly salt and acid resistant piping, including pumps and valves. In addition, some ships used stainless steel sheets for decoration and outfitting. In short, due to engineering technology and cost, the amount of stainless steel used in the marine industry is very small.
In recent years, with the rapid development of China's economy, especially the start of LNG projects in Guangdong, Fujian, Zhejiang and other provinces and cities, and China's petroleum and petrochemical industry have entered a new round of rapid development and industrial upgrading, the liquid chemical transportation industry faces With good development opportunities, the manufacture of LNG, LPG and chemical tankers with stainless steel cargo tanks has become a new hot spot in the domestic shipbuilding industry, and has also created opportunities for domestic shipyards to build highly difficult and high value-added LNG ships.
With the successful delivery of the first 147,200 cubic meters of LNG ship at Hudong Zhonghua Shipyard, China's shipbuilding industry broke the previous monopoly of LNG ship construction by Japan, Europe and South Korea, which won us bulk orders and domestic The stainless steel industry brings new opportunities.

The following materials are commonly used steel in the shipbuilding field

Because stainless steel has excellent mechanical properties, excellent processing accuracy and strong corrosion resistance, it has an irreplaceable role in shipbuilding materials. Moreover, with the development of the stainless steel industry, especially the development of China's stainless steel industry, the trend of using stainless steel pipe fittings in the shipbuilding industry has become more apparent.
In 2019, dual phase steel S31803 pipes, fittings and flanges were used in a ship project in Singapore. The ship's own weight is reduced, thereby increasing the ship's own carrying capacity, and its corrosion resistance has also been improved.

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