| 摘要 |
PURPOSE: An open type head line is provided to be easily installed even in a relatively complex and narrow space, and to improve an efficiency of fire extinguishing by securing the smooth discharge of fire extinguishing chemicals. CONSTITUTION: The open type head line is a wrinkled line made of metal or other materials strong in heat. By virtue of wrinkles provided on the head line, it is possible to enable a user to easily bend the head line, and it is possible to freely adjust the number of fire extinguishing chemicals injection holes and an injection direction of fire extinguishing chemicals. Thereby, the head line is able to be effectively used in relatively narrow and complex places.
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