Steam header belongs to the category of pressure vessel, its pressure capacity, volume should be corresponding to the supporting boiler. The main compression elements are head, housing, etc.
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Last year, China's LED industry was affected by downstream lighting and backlighting, and the LED industry developed well. In 2014, China's LED industry will continue to have a high degree of prosperity, and the market has broad prospects for development.
According to statistics, in 2008, the global NB backlight penetration rate was only 16 and the penetration rate rose to 89 in 2010. In 2010, the large-size TV backlight penetration began. In 2010, only 10 or so could not penetrate, 2011 to 40, 2012 to 70. In 2013, it is expected to be above 90. Beginning in 2013, with the dual promotion of policies and price cuts, the lighting penetration rate has risen rapidly from 10, and the economy has continued to rise. The market for hundreds of millions of lighting will gradually open.
In 2014, the government will promote the development of LED outdoor lighting through municipal procurement. In the future, the government will stimulate the development of civilian lighting through terminal consumption subsidies. With the advancement of technology and commercial innovation, the price of LED bulbs continues to decline. At present, the market price of LED bulbs is 0-15 higher than that of energy-saving lamps. Since LED lamps are more efficient, energy-saving and environmentally friendly, the penetration rate will be higher. constantly improving.
In the future, outdoor lighting will continue to grow under large-scale government bidding. Commercial lighting is currently booming. The future billions of markets are still in consumer terminals. With the advancement of technology and product design concepts, the price of LED lighting products will drop sharply. The indoor LED lighting penetration rate in mainland China will explode in the next two years. At present, grassroots research results show that LED lighting manufacturers are working overtime, traditional energy-saving lamp dealers are distributing goods in large areas, and the penetration rate of LED lights in sales channels is as high as 90, and civilian lighting is ready to go.
The LED industry is characterized by high efficiency and environmental protection. In the early stage of development, it was driven by external forces. The government policy promoted the vigorous expansion of production capacity, the competition continued to intensify, and the decline in gross profit margin accelerated. The general decline in the gross profit margin of each LED listed company in the third quarter also confirmed this point. With the reduction of policy subsidies, the profit model will shift from government subsidies to marketization, and industry consolidation will accelerate in the future. 
Boiler Steam header is the main supporting equipment of the boiler to distribute the steam generated by the boiler operation to various pipelines, it also serves as a reservoir that feeds steam to the individual heating circuits. The boiler steam header must be large enough to virtually eliminate pressure drop between the boiler and the beginning of the circuit.