A recent milestone in China's stainless steel industry has drawn international attention: domestically developed 2507 super duplex stainless steel seamless pipes have been successfully applied in China's South China Sea Lingshui 17-2 gas field development project, marking a key breakthrough in high-end pipes for marine engineering . This achievement not only enhances China's competitiveness in the global high-end stainless steel pipe market but also opens up new opportunities for exports amid the global push for energy infrastructure development.
Stainless steel pipes are alloy products primarily composed of iron, chromium, nickel, and molybdenum, with their chemical composition determining key properties such as corrosion resistance and strength. The 2507 super duplex stainless steel pipes, independently developed by Zhejiang Wuyue Stainless Steel Co., Ltd., feature a precise element ratio: 25% chromium, 7% nickel, and 4% molybdenum, achieving a pitting resistance equivalent (PREN) va