【Major Industrial Equipment in the Chemical Industry】398-2018: Ultra-large-diameter forged austenitic stainless steel seamless tube billets with a diameter of 700 mm

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The hot summer days are tough! But safety analysis must not be neglected! ---------------------------------------------- The past decade has been a period of rapid development in China’s chemical industry, with the emergence of many new processes, products, and equipment. China’s chemical processing equipment has also seen significant progress, which has contributed to the swift development of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and increased use of domestic equipment. We invite everyone to share their insights and discuss these topics together; let’s cheer for Made in China and support the development of chemical processing equipment! ------------------------------------------------------ On January 10, 2018, Yongxing Special Steel issued a announcement regarding the successful development of ultra-large-diameter forged stainless steel seamless tube billets. The announcement states that the company has successfully developed seamless forged austenitic stainless steel billets with a diameter of 700 mm (hereinafter referred to as “700 mm diameter billets”), which have passed quality inspections and are now available for bulk sales. These 700 mm diameter billets represent the largest-sized forged stainless steel seamless billets suitable for piercing use in China at present. Product advantages: The 700mm tube billet features a large diameter and high weight per unit. This product can be processed by downstream pipe manufacturing plants into ultra-large diameter stainless steel seamless pipes through hot piercing and cold rolling, thereby simplifying the production process. Compared with ultra-large diameter stainless steel seamless pipes produced by cold drawing and expansion, the cold rolling process helps to avoid quality defects such as uneven wall thickness and cracking, ensuring the quality of these pipes; they can be widely used in engineering fields such as energy equipment ； At the same time, the cold rolling process features a high degree of automation and efficiency, which helps to reduce production costs and enhance the market competitiveness of the products.