With the rise in fuel prices, the impact of railway speed increase and high-speed rail, bus companies have increasingly felt the importance of operating costs and efficient transportation.
In recent years, major domestic energy companies, including PetroChina, have increased their efforts to import and develop liquefied natural gas. LNG resource supply capabilities have greatly increased, which has led to the development of new environmentally friendly vehicles, LNG vehicles. In addition to cities such as Beijing, Urumqi, and Changsha, they took the lead in demonstration of LNG buses in public transport systems.
In the economically developed Yangtze River Delta region, four leading road transport companies in Jiangsu, Suzhou, Wuxi, Changzhou, and Nantong, and in 2009, Jiangsu Dayun Transportation Co., Ltd. was established to use LNG vehicles as a means of promoting low-carbon transportation. The strategic choice for improving the quality of the city where it is located, and the partner of China Petroleum Kunlun Energy Huagang Gas Group.
The abbreviation for LNG LNG. The outstanding advantages of new energy vehicles compared to lng passenger vehicles and fuel vehicles are: Significant reduction in tailpipe emissions and close to “zero emissionsâ€. The specific figures are: emissions of carbon monoxide by 97%, hydrocarbons by 72%, nitrogen oxides by 80%, carbon dioxide by 24%, sulphur dioxide by 90%, car noise by 40%, and benzene, lead, and dust by 100%. At the same time, it can effectively reduce operating costs. In addition to the environmental protection function, LNG buses have relatively stable supply conditions for natural gas. During the operation, the smooth performance of the vehicle body will also be greatly improved, and there will be no “hiccups†in the fuel vehicle.
Copper pipe is also known as copper pipe. A non-ferrous metal tube is a pressed and drawn seamless tube. Copper pipe has good electrical conductivity, thermal conductivity characteristics, electronic products of conductive parts and heat dissipation parts of the main material, and has become a modern contractor in all residential commercial housing water pipeline, heating, cooling pipe installation of the first choice. Copper pipe corrosion resistance is strong, not easy to oxidation, and some liquid substances are not easy to react chemically, easy to Wei bending shape.
Copper pipe (also known as red copper pipe), often used in water pipes, heating and cooling pipes, can be used in different environments. Copper pipe set the advantages of metal and non-metal pipe in a body, in the hot and cold water system exclusive torture, is the best connection pipe. Copper pipes are refractory and heat-resistant, and can maintain their shape and strength at high temperature without aging.
The pressure resistance of copper pipe is several times or even dozens of times that of plastic pipe and aluminum plastic pipe, and it can withstand the highest water pressure in today's buildings. In the hot water environment, with the extension of service life, the bearing capacity of plastic pipe significantly decreases, while the mechanical properties of copper pipe remain unchanged in all thermal temperature ranges, so its pressure resistance will not be reduced, nor will aging occur.
The linear expansion coefficient of copper pipe is very small, is 1/10 of plastic pipe, will not cause stress fatigue rupture because of excessive thermal expansion and cold contraction.
The strength of copper pipe is greater, and the outside diameter is smaller to ensure the effective inside diameter, which is more suitable for hidden burial.
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Shandong Longhao Steel Group Co., Ltd. , https://www.longhaosteels.com