Chongqing road LED lighting has taken shape
Flanges are a method of connecting pipes, valves, pumps, and other equipment to form a piping system, usually by welding or threading. It is also easy to clean, inspect or modify. Flanges are usually welded or tightened. Flange joints are made by bolting two flanges together and using washers between them to provide a seal.
Pipe assemblies may be bolted together between flanges. Flanges are used to connect pipes to each other, to valves, to fittings, and to special items such as filters and pressure vessels. Cover plates can be connected to create "blind flanges". Flanges are bolted together, and sealing is usually done using washers or other methods. Industries dealing with flammable, volatile, toxic or corrosive substances require special protection at flange joints. Flange shields can provide an additional level of protection to ensure safety.
There are many different flange standards worldwide. For simple functionality and interchangeability, these designs have standardized dimensions. Common world standards include ASA/ASME (USA), PN/DIN (Europe), BS10 (UK/Australia) and JIS/KS (Japan/Korea).
In most cases, standards are interchangeable, as most local standards have been aligned with ISO standards.
Flanges are also made in standardized sizes, usually in "flat", "convex", "mortise" or "ring joint" styles, but other ambiguous styles may be available.
Flange designs include "weld neck", "socket", "lap", "socket weld", "thread" and "blind flange".
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On September 16th, it was learned from the Chongqing Municipal Municipal Committee that the energy-saving and emission reduction work of the main city roads actively promoted by the city has taken shape. As of the end of August, the city's main city tube road lighting and night lighting fixtures used a total of 31,800 LED lights, accounting for 19.5.
LED lights have the characteristics of environmental protection, power saving, high luminous efficiency and long life, which are the development direction of urban lighting in the future. In our city, after the LED lights are managed by the intelligent system, not only can the lights be automatically turned on and off according to the natural lighting conditions, but also the intensity of the light can be automatically adjusted.
However, because LED lights are new, the price is high, and the quality of some lamps is not as stable as traditional high-pressure sodium lamps. At present, the municipal department only trials LED lamps on the back streets and lighting demonstration roads in the main city, and the main city roads are large. It will take time to promote LED lights in an area.