The pressure relief vent in the protective zone of gas fire extinguishing system refers to the device that automatically opens and releases pressure when the pressure value in the protective zone reaches the specified value when the extinguishing agent in the gas fire extinguishing system is spraye ......
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Recently, the China Automotive Technology and Research Center (hereinafter referred to as "China Automobile Center") data resource center has released terminal retail data for the Chinese automotive market. The data shows that in 2017 China's auto market sold 28.04 million vehicles, ......
On the northwestern side of the road in the middle of the desert, white snow covers the earth and is quiet and majestic. "The guzzling guillotine" sounds far and near. A XCMG slide removes the snowmobile from its busy operation. Against the background of flying snow, it is light and pers ......
I. Division and protection of surface water source protection areas for drinking water 1. The surface water source protection area of ​​drinking water includes certain water areas and land areas. The scope should be based on the quantitative prediction of water quality according to t ......
Due to the movement, mobile devices need to constantly change positions. In each different position, the mobile devices must be able to obtain power power at any time, otherwise they cannot move. At this time, the trolley line was born, and several conductors were laid in parallel along the runnin ......
Piston pipe valve Product Overview: Piston pipe valve is the latest export control valve, is following the old manual control valve, hydraulic butterfly valve, hydraulic control valve after the third-generation new butterfly multi-function water pump control valve, is the most advanced structure ......
Universal tensile machine uses servo motor drive system to move the crossbeam up and down to achieve the test loading process. With precise loading speed and force measuring range, it has higher precision and sensitivity for the measurement and control of load, deformation and displacement. It can ......
installation steps The first step: Take out the bracket and prepare tools and parts: Plug, screw, screwdriver, hammer, electric drill, and other necessary tools; check the size of the plug and tapping screws according to the pre-determined mounting position. Check whether the screw of the bracket ......
Balancing machines are widely used in modern machinery. The choice of lubrication method is also very important. The traditional lubrication method generally uses oil lubrication. However, in the process of removing weight, the chips are easily dropped and stuck on the bearing bushes, thereby affe ......
On March 4, 2018, the CAW Aluminum Wheel Quality Association President (Extended) Conference was successfully held in Fuyang, Jiangsu. Zhang Xinxin, executive vice president and secretary general of the aluminum wheel quality association, Wang Xiaodong, deputy secretary-general Pan Qilong and Tao H ......