Fire bolt Xi'an Xianyang hydrants, issued by the fire detector system signal to open the pre-action valve, fire hydrant picture, the exhaust pipe system filled with water, become temporary wet system. Xi'an fire bolt, underground hydrants is an outdoor ground fire water supply facilities. Hydrants Xianyang, Shaanxi and fire equipment, fire hydrant boxes provided by the Fire Equipment Co., Ltd. Shaanxi Jiwei. Hydrants Xianyang, Shaanxi and fire equipment, fire hydrant box Shaanxi Jiwei Fire Equipment Co. (www.jiweixiaofang.com) (www.jiweixiaofang.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Mr. Huang.