Hydraulic support with automatic spray control valve General technical conditions Ministry of Coal Industry of the People's Republic of China 1997-12-30 Approval 1998-06-01 implementation 1 Scope This standard specifies the requirements for automatic support spray control valve, test metho…

A control device suitable for automatic gas-production furnace gas production process optimization - ZF-4 type gas furnace furnace condition monitoring and optimization system, in the actual production of energy-saving pollution reduction effect is obvious, significant economic benefits. The te…

1, flange connection This is the valve used in the most forms of connection. According to the shape of the junction can be divided into the following categories: 1) smooth: for the valve is not high pressure. Processing more convenient 2) Bump: high pressure, can be used in the hard washer 3) M…

Ball Valve Description: Ball valve is used with a circular channel for the opening and closing of the ball, the sphere with the valve stem to open and close the valve action. The opening and closing of the ball valve is a perforated ball, rotating perpendicular to the axis of the channel, so as…

Recently, the state has provided a major historical opportunity for Harbin to speed up the development of industrial and high-tech industries by implementing aggressive financial policies such as revitalizing the old industrial bases in Northeast China and increasing investment to stimulate do…

“From the Shanghai Auto Show to the Changchun Motor Show, the FAW Group's own brand lineup is on its own debut, which also marks the official opening of FAW's own brand integration.” At the Changchun Motor Show site, Deputy General Manager Xu Xianping FAW Group to the …