Continuous casting slabs or primary rolling slabs are used as raw materials, heated by a stepping furnace, and dephosphorized by high-pressure water, and then enter the roughing mill. The rough rolling material is cut through the head, tail, and then into the finishing mill, and computer-controlled rolling is carried out. After the final rolling, it will go through laminar cooling (computer-controlled cooling rate) and take-up by the coiler to become a straight hair coil. The head and tail of straight hair curls tend to be tongue-shaped and fish-tailed, with poor thickness and width accuracy, and often have wavy, folded, tower-shaped and other defects on the edges. The coil is heavier and the inner diameter of the Steel Coil is 760mm. (Generally used in the pipe-making industry.) After straightening the hair through the cutting head, tail cutting, trimming and multi-pass straightening and smoothing finishing lines, and then cutting or re-rolling, it becomes: hot rolling Steel plates, flat hot rolled steel coils, slitting tapes and other products. If the hot-rolled finishing coil is pickled to remove scale and coated with oil, it will become a hot-rolled pickled coil.
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Located on the northwestern shore of Lake Ontario, Toronto is Canada's largest city with a relatively large city. It is one of the most diverse cities in the world, and its rich ethnic characteristics make the city colorful and beautiful. Toronto ranks second in the ranking of the world's top ten smart cities. The Toronto level is the best in the construction of smart cities in North America, and the results in all aspects are not bad. In practice, Toronto recognizes the importance of smart cities and, in some ways, energy-efficient lighting is doing very well.
As early as 2007, the Toronto Business Development Promotion Association announced that the city of Toronto will install LED lighting fixtures on urban infrastructure. It also became the second city in North America to join the initiative to build LED energy-efficient lighting cities in Raleigh, North Carolina.
The LED Energy-Efficient Lighting City initiative was initiated by Raleigh, North Carolina, USA and Cree to promote collaboration between municipalities to implement energy-efficient lighting activities. Cree's Greg Merritt commented on the LED city in Toronto, which he believes is a smart move for Toronto. At the same time, he predicted that in the near future, LEDs will replace traditional lighting devices in a wider range. Toronto's deputy mayor Joe Pantalone also holds a similar view. He believes that the use of LED lighting is undoubtedly the first choice for urban energy conservation and environmental protection construction.
The City of Toronto is expected to complete the urban LED lighting renovation in ten years to achieve the goal of energy saving 50. Compared with traditional lighting facilities, LED lighting has many advantages such as low power consumption, long life, low use and maintenance costs, and low greenhouse gas emissions.
At present, the city of Toronto has been piloting LED lighting projects intensively, and the scope of promotion and use of LEDs has also been greatly expanded. From the replacement of separate holiday lighting installations to retail displays and streetlight installations, other ongoing or planned LED projects include: solar-powered LED lights for parks and LED lights for public parking lots. In order to save electricity, while maintaining the night scene, reduce the pollution of the city, LED lighting replaces the neon light tube. The City of Toronto strongly supports LED lighting projects, whether it is financial, material or human resources. Pantalone has repeatedly visited the pilot project and pointed out that it is necessary to vigorously promote LED lighting projects and accelerate urban energy conservation and environmental protection.