On January 25, qingtuo technology's seven stand tandem cold rolling mill was successfully put into one heat load test, which is the first seven stand stainless steel tandem cold rolling mill in the world.

  The project adopts a new generation of laser welding technology, small roll diameter four high and six high rolling mill matching fusion technology, the minimum working roll diameter is 175 mm, greatly strengthen the reduction capacity, the thinnest thickness of the product is only 0.38 mm, the maximum speed of the rolling mill reaches 450 m / s, smoothly realizes the stable continuous rolling of stainless steel multi stand, and creates a new benchmark of stainless steel continuous rolling mill stand number.