Barbed wire, also called barb wire, is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the strand(s). Due to the high security and lower cost, barbed wire is now widely used as a security barrier. According to different surface treatment, It plays the role of protection in mines,gardens and apartments,frontier,defence,and enclosure of prisons.
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QYM-Barbed wire
In order to improve the static characteristics and dynamic characteristics of the control valve, to be equipped with a valve positioner; In order to convert electrical and gas signals, to be equipped with electricity - gas converter; In order to keep the working power source clean and maintain a certain pressure, to Equipped with air filter pressure reducer; When the gas source is interrupted, in order to make the control valve can still maintain a certain pressure signal, to use the pneumatic valve to achieve self-locking valve stroke. In short, the role of the annex is to make the valve function more perfect, more reasonable and more complete.