The hottest ZTE equipment R & D large-diameter sea

ZTE equipment developed large-diameter seamless special steel pipe to fill the domestic gap

on December 5, technicians used the world's advanced ultrasonic flaw detection to vertically fix the steel hammer body on the special fixture for product quality inspection. Under the background of long-term dependence on imports of large-diameter seamless special steel pipes in the fields of petrochemical industry, coal chemical industry and nuclear power in China, in recent years, the damage simulation results of ZTE equipment's low-speed impact on the lower plywood at different times confirm that China needs a large number of large-diameter thick wall seamless steel pipes. On December 5, technicians used the world's advanced ultrasonic flaw detection equipment to detect product quality. Under the background that China's petrochemical industry and coal chemical industry have long relied on imports of large-diameter seamless special steel pipes in large steel enterprises and nuclear power fields, ZTE equipment has targeted the market needs of China's large-diameter thick wall seamless steel pipes in recent years, carried out scientific and technological research, and successfully developed TP347 stainless steel seamless pipes with a diameter of 610mm and a thickness of 68mm in early 2012. On this basis, ZTE energy equipment has applied a variety of new technologies such as ESR refining, solid solution heat treatment, high-pressure crushing and cooling in the manufacturing process through innovative technologies. 1. Overload protection function: when the load exceeds 3.5% of each grade value, technology and new technology. In June this year, products with a diameter of 711mm and a pipe wall thickness of 88mm were successfully manufactured, which have been approved by the national iron and Steel Research Institute, the national iron and steel product quality supervision and inspection center According to the joint appraisal of Nanjing University of Aeronautics and Astronautics and other units, the comprehensive performance of the product has reached the international advanced level, can replace imports, and can be used in petrochemical, coal chemical and other fields, filling the domestic gap. So far, ZTE equipment has successfully developed and produced 13 TP347H series products with a diameter of 219.1 mm-711 mm and a wall thickness of 29 mm-88 mm, which have filled the domestic gap for many times and obtained the qualification of nuclear power material production license of American energy company